Announcements

We are honored to announce the appointment of two academicians of the Chinese Academy of Sciences as Honorary Editors-in-Chief of the journal Symmetry (ISSN: 2073-8994). We appreciate their recognition of our journal and their pledges of support.

Name: Prof. Dr. Ronggen Cai
Affiliation: Ningbo University, Ningbo, China
Interests: gravitational theory; cosmology

Name: Prof. Dr. Jiping Zhang
Affiliation: Peking University, Beijing, China
Interests: algebra

Further details about the Editorial Board of Symmetry can be found at the following link: https://www.mdpi.com/journal/symmetry/editors.

Symmetry Editorial Office

We are pleased to announce that Prof. Dr. Tiberiu Harko’s paper “Jacobi and Lyapunov Stability Analysis of Circular Geodesics around a Spherically Symmetric Dilaton Black Hole” has won the Symmetry 2023 Best Paper Award, as it is one of the exceptional articles published in Symmetry (ISSN: 2073-8994). As winners of this award, Prof. Harko and coauthors Prof. Cristina and Paul Blaga will receive CHF 400, a certificate, and a free voucher for article processing fees valid for one year.

The following is a short interview with the winner, Prof. Dr. Tiberiu Harko:

1. Congratulations on winning the Symmetry 2023 Best Paper Award! Could you please briefly introduce yourself?
I begin by expressing my gratitude to the editorial office for inviting me to participate in this interview. I earned my bachelor’s degree in physics from Babeș-Bolyai University. Later, I pursued my doctoral studies at the University of Hong Kong, where I was awarded my PhD in 2001. I spent around 15 years in the Department of Physics of the University of Hong Kong before moving to Guangzhou, China, where I joined the Yat Sen School of the Sun Yat-sen University in 2013 as a Full Professor. I have also held academic positions at the University College London (UCL). Due to the travel restrictions during COVID-19 in 2019 and 2020, I was unable to return to China and have since remained in my hometown in Romania.

2. Could you give a brief overview of the main content of your award-winning paper?
In this collaborative paper with two colleagues from the Department of Mathematics, we analyzed the stability of circular geodesics around a charged dilaton black hole (GMGHS solution) using both Lyapunov and Jacobi stability methods. The Jacobi approach, based on Kosambi–Cartan–Chern (KCC) theory, provided a geometric framework to examine particle trajectories via nonlinear connections and curvature deviation tensors. Our key finding was the equivalence between Lyapunov and Jacobi stability criteria for circular orbits, with stability determined by the sign of the second derivative of the effective potential. This work demonstrates the applicability of advanced geometric stability methods in black hole physics, particularly for systems derived from string theory.

3. Can you introduce your current research focus and the main research areas of your team?
My current research focuses on the modification of gravitational theories. Together with my colleagues and students, we are actively exploring alternative theoretical frameworks to explain recent cosmological observations. Specifically, we investigate the possibility that this observational data may provide evidence for deviations from the classical description of gravity as formulated in Einstein’s General Relativity. Our work seeks to develop models that could potentially offer viable alternatives to the standard ΛCDM (Lambda Cold Dark Matter) cosmological paradigm.

4. Could you describe some challenges and breakthroughs in your research field?
In my field, we face the same challenges as the broader scientific community—particularly in explaining many recent observations that are both important and intriguing. These findings suggest we may need to fundamentally rethink our current cosmological models and even the foundational principles of gravitational theory. As for potential breakthroughs, I have to admit it's difficult to predict clear outcomes. Research in cosmology and gravity moves incredibly fast, with new theories constantly emerging to address observational puzzles. Because of this, we can't yet say which approach will ultimately hold up—or when a major discovery might happen.

5. What factors attracted you to submit your paper to Symmetry? How was your submission experience?
I had been aware of Symmetry for some time before deciding to submit my paper. I appreciated the journal’s strong publishing history, its broad coverage of multiple fields, and its focus on symmetry—a fundamental concept across physics, chemistry, mathematics, and other areas. These factors made the journal particularly appealing to me. Later, I received an invitation to submit my work. I found the submission system straightforward to use, the editors very helpful, and the review reports constructive. The reviewers pointed out two specific issues, which my co-authors and I successfully addressed in our revisions.

6. In your opinion, which research topics will attract widespread attention in the academic community in the coming years?
I can speak primarily from my area of expertise. In my view, cosmology is likely to remain a dominant field for many years, given that it currently receives a substantial influx of observational data. As one of the few branches of physics with such extensive observational input, I expect cosmology to continue being highly active and influential well into the future. While I acknowledge the potential for breakthroughs and discoveries in other areas of physics, I believe that cosmology will continue to be a prominent and dynamic field for several decades.

7. What advice would you give to young researchers who aspire to produce high-impact research results?
My advice to young researchers who aspire to produce high-impact research results is to pursue topics they are truly passionate about. I believe this is essential for achieving meaningful outcomes. Identifying your genuine interests within the scientific field, combined with dedicated effort, is the key to producing significant and impactful work.

8. As the recipient of this award, could you share your feelings and whom you would like to thank?
I was truly surprised and deeply grateful to learn that I had received this award, which I consider a tremendous honor. I would also like to express my heartfelt thanks to my co-authors, Cristina and Paul Blaga—they deserve immense credit for this work and played an essential role in the success of our paper.

9. Symmetry is an open access journal. How do you think open access impacts readers and authors?
I consider open access publishing to be somewhat controversial at present. Many excellent researchers may lack the financial resources to support open access publication fees. However, based on my experience with Symmetry and other MDPI journals, I’ve noted that there are opportunities to publish certain papers free of charge (Editor's note: For every manuscript reviewed in MDPI journals, the reviewer may receive a discount voucher code entitling them to a reduction in the article processing charge (APC) of a future submission to any MDPI journal). I view this policy positively, as it helps support scholars and specific research projects. Additionally, I’d highlight a key advantage of open access: making scientific papers freely accessible to the entire research community. Overall, I believe that open access is a valuable approach that promotes broader dissemination and democratization of scientific knowledge.

More information about journal awards can be found at the following link: https://www.mdpi.com/journal/symmetry/awards.

We are pleased to announce that Prof. Dr. Teik-Cheng Lim’s paper “Metamaterial with Tunable Positive and Negative Hygrothermal Expansion Inspired by a Four-Fold Symmetrical Islamic Motif” has been chosen as one of the exceptional articles published in Symmetry (ISSN: 2073-8994) during 2023 and won the Symmetry 2023 Best Paper Award. As a winner, Prof. Dr. Lim will receive CHF 400, a certificate, and a free voucher for article processing fees valid for one year.

The following is a short interview with the winner, Prof. Dr. Teik-Cheng Lim:

1. Congratulations on winning the Symmetry 2023 Best Paper Award! Could you please briefly introduce yourself?

I studied mechanical engineering at the National University of Singapore for both my undergraduate and PhD. For my PhD, I worked on the sheet forming of knitted fabric composites, a multidisciplinary topic bridging mechanics, manufacturing, and materials. For my postdoctoral work, I conducted some research on the electrospinning of nanofibers. I also explored other fields, including mathematical chemistry and molecular physics. Eventually, I focused my research on auxetic materials—materials that exhibit a negative Poisson’s ratio. As a relatively new and emerging field, developing about 20 years ago, studying auxetic materials allowed me to stay closer to the cutting edge of scientific research. I also worked on closely related topics, such as materials with negative thermal expansion, negative compressibility, and negative moisture expansion. These materials behave oppositely to conventional ones and often require engineered microstructures to achieve such properties. My publications primarily centered on mechanical metamaterials, where I investigated these unconventional behaviors through the design of artificial microstructures.

2. Could you give a brief overview of the main content of your award-winning paper?

In my paper, I present a type of metamaterial composed of repeating microstructures that function like a simple machine. My design features overlapping Y-shaped rigid units connected by bimaterial spiral strips. When exposed to such environmental changes, these strips encounter a change in their curvature due to their contrasting expansion coefficients, causing the pairs of Y-shaped units to rotate opposite to each other. This collective rotation changes the size of the unit cell, allowing the material to exhibit either a highly positive or highly negative effective expansion coefficient. The direction and magnitude of this response can be tuned by reversing the orientation of the bimaterial layers. At certain configurations, the metamaterial exhibits Islamic geometrical patterns.

3. Please introduce your current research focus and the main research areas of your team?

Over the past three years, my research has focused on designing materials with negative Poisson’s ratios using assemblies of rotating rigid units. In my latest work, these rotating units are designed to split into smaller sub-units. When the metamaterials are compressed, the units rotate in one way, but when they are stretched, they separate into smaller sub-units and rotate differently. This causes the metamaterials to respond in different deformation mechanisms depending on whether they are being compressed or pulled, leading to the discontinuity of Poisson’s ratio values at the original state.

4. Could you describe some challenges and breakthroughs in your research field?

A major challenge with these metamaterials is that the knowledge in this area is insufficient for them to be commercialized. I believe significant breakthroughs will occur in the coming years, which will enthuse the industry to adopt mechanical metamaterials on a wider scale.

5. What factors attracted you to submitting your paper to Symmetry? How was your submission experience?

I typically submit my work to journals specializing in solid-state or condensed matter physics, solid mechanics, and materials science. However, when my research involves microstructures with interesting symmetrical patterns, I choose to submit my paper to Symmetry. As for my submission experience, I’m highly satisfied. The process was straightforward, and any questions I had were promptly and efficiently addressed by the editorial office.

6. In your opinion, which research topics will attract widespread attention in the academic community in the coming years?

In my opinion, the application of Artificial Intelligence in natural and technological sciences will garner attention in the scientific community in the years to come.

7. What advice would you give to young researchers who aspire to produce high-impact research results?

I would advise young researchers to be bold and explore research areas of their interest and natural ability rather than following the latest trend.

8. As the recipient of this award, could you share your feelings and whom you would like to thank?

I didn’t expect to receive this award, especially since the paper was published some time ago, and I’ve since moved on to other research areas. When I saw the notification email, I was surprised and felt elated. I immediately shared the news with my wife to celebrate, and I feel deeply honored and humbled to be selected. This recognition is a great joy and pleasure, and I’ve struggled to find the right words to express my feelings. I’d like to thank my family for their constant support—especially my parents and my wife. I’m also deeply grateful to all my teachers and to my colleagues, with whom I frequently discuss my work. Lastly, I want to express my sincere thanks to the award committee and the journal Symmetry for this incredible honor.

9. Symmetry is an open access journal. How do you think open access impacts readers and authors?

I believe open access is highly beneficial for readers, as it removes subscription paywalls and allows free access to research. One significant advantage of open access is the potential for a paper to receive a higher number of citations.

More information about journal awards can be found at: https://www.mdpi.com/journal/symmetry/awards.

Symmetry (ISSN: 2073-8994) is pleased to announce the winners of the Symmetry Best Paper Award, selecting one review and three research articles among the peer-reviewed papers published in Volume 15 of the journal. The decision was made by the committee based on an evaluation of the originality and significance of the papers and their number of citations and downloads.

The prizes were as follows:

• CHF 400;
• An electronic certificate;
• A voucher to waive the Article Processing Charge (APC) for one submission to the journal (subject to peer review)—valid for one year.

We would like to congratulate the following winners:
“Tetraquarks and Pentaquarks from Quark Model Perspective”
by Hongxia Huang, Chengrong Deng, Xuejie Liu, Yue Tan and Jialun Ping
Symmetry 2023, 15(7), 1298; https://doi.org/10.3390/sym15071298

“A Deep Learning Approach to Extracting Nuclear Matter Properties from Neutron Star Observations”
by Plamen G. Krastev
Symmetry 2023, 15(5), 1123; https://doi.org/10.3390/sym15051123

“Jacobi and Lyapunov Stability Analysis of Circular Geodesics around a Spherically Symmetric Dilaton Black Hole”
by Cristina Blaga, Paul Blaga and Tiberiu Harko
Symmetry 2023, 15(2), 329; https://doi.org/10.3390/sym15020329

“Metamaterial with Tunable Positive and Negative Hygrothermal Expansion Inspired by a Four-Fold Symmetrical Islamic Motif”
by Teik-Cheng Lim
Symmetry 2023, 15(2), 462; https://doi.org/10.3390/sym15020462

The announcement can be found at the following website: https://www.mdpi.com/journal/symmetry/awards/2707.

Please join us in congratulating the winners of the Symmetry Best Paper Award. We would also like to take this opportunity to thank all of the authors for their continued support.

Symmetry Editorial Office

In order to further enhance the international influence of Symmetry (ISSN: 2073-8994), promote the academic exchange of young scientists, and support the Editorial Board with additional expertise, the journal would like to invite interested and eligible early career researchers to apply for Early Career Editorial Board (ECEB) membership.

Recruitment:
A total of 50 Early Career Editorial Board Members will be recruited; the position can be held for two years, with the possibility of renewal for a second term.

Application eligibility:

• Candidates must have completed their doctorate/PhD degree in the past 10 years (considering exceptions for career interruptions, including medical and family leave);
• There must be evidence that they have made significant research achievements in the field of computers, mathematics, physics, chemistry, life sciences, engineering and materials;
• Willingness to dedicate their time to the development of the journal with enthusiasm;
• Active and engaged in their community (e.g., experienced at presenting at academic conferences or involved in professional organizations).

Benefits of an Early Career Editorial Board Member:

• A certificate of appointment as an Early Career Editorial Board Member will be provided;
• The achievements of Early Career Editorial Board Members are publicized on the journal’s media platforms to improve their academic visibility;
• There is an opportunity to be promoted to Editorial Board Member based on contributions;
• The journal will regularly acknowledge those who participate in the peer-review process on the journal’s website;
• There will be opportunities to participate in, or host annual meetings and online seminars organized by the Editor-in-Chief and Editorial Board Members.

Responsibilities of an Early Career Editorial Board Member:

• Publicizing and promoting the journal at academic conferences and among peers;
• Selecting high-quality articles and preparing bilingual media content for promotion;
• Reviewing at least four manuscripts per year;
• Providing input on any new initiatives for the journal’s development;
• Garnering submissions from local and overseas world-leading scientists in relevant research fields.

Applications:
Please fill in the application form here.

Please send the application form and your academic resume to symmetry@mdpi.com with the subject of “Symmetry Early Career Editorial Board Application + Name + Institute + Research Expertise”.

Application deadline: 31 March 2026.

Selection process and announcement:
The selection process: initial screening of application materials → selection by the Editor-in-Chief and Editorial Board Members → email notification → issuing a certificate of appointment.

The selection process will be completed within one month of the application deadline, and the results will be announced on the journal’s website.

MDPI would like to invite all Guest Editors, as esteemed experts in their respective disciplines, to participate in the 7th MDPI Guest Editor Club. This forum intends to highlight exciting topics in a comprehensive yet efficient manner to allow Guest Editors from all over the world to present their experiences and discuss their achievements.

The Guest Editor Club will bring together a worldwide group of multi-disciplinary Guest Editors to present and exchange their breakthrough ideas which have been reported in MDPI’s Special Issues. We have, therefore, put together this platform to facilitate your interactions with the journal and lead you through the most important aspects of the role and what you can expect from the process of editing a Special Issue. We are pleased to provide an excellent opportunity for all our Guest Editors to propose and develop new approaches, exchange perspectives, and encourage new lines of research.

We will record the presentations, with prior consent obtained from the lecturers, and upload them to our online database. We will continue to build this database with brief introductions and summaries of topics and will open an online discussion group for each GE. We hope that this event will be of interest to you, and we welcome you to join us at this forum.

We are very much looking forward to seeing you at the 7th MDPI Guest Editor Club 2025. Please find below an up-to-date outline of the presenters.

Date: 30 July 2025 at 9:00 a.m. CEST | 9:00 p.m. EDT | 3:00 p.m. CST Asia
Webinar ID: 889 2623 3305

Register now for free!

Program:

After registering, you will receive a confirmation email containing information on how to join the webinar. Registrations using academic institutional email addresses will be prioritized.

Unable to attend? Register anyway and we will inform you when the recording is available.

Keynote Speakers:

• Dr. David Campbell, University of Vienna, Vienna, Austria;
• Dr. Roberto Teggi, San Raffaele Scientific Institute, Milano, Italy;
• Dr. Konstantin Zioutas, University of Patras, Patras, Greece;
• Ms. Mary O'Sullivan, Journal Relations Specialist, MDPI.

MDPI will be attending the Conference on Complex Systems 2025 held in Siena, Italy, which will take place from 1 to 5 September 2025. This is the flagship annual conference for the complex systems research community, operating within the framework of the Complex Systems Society. The purpose of the Society is to promote the development of all aspects of complex systems science among the international scientific community as a whole.

The following MDPI journals will be represented:

• Systems;
• Big Data and Cognitive Computing;
• Logistics;
• Applied Sciences;
• Dynamics;
• Informatics;
• Information;
• Algorithms;
• Symmetry.

If you are attending the conference, please feel free to visit our booth. Our delegates look forward to meeting you in person and answering any questions that you may have. For more information about the conference, please visit the following link: https://ccs25.cssociety.org/.

The MDPI (China) Physical & Mathematical Sciences Committee was officially established in 2024, with Prof. Chang-Pu Sun, an Academician of the Chinese Academy of Sciences, serving as its chairman. The Committee is dedicated to providing scientific strategic guidance and advice to MDPI and promoting cooperation and academic exchanges with the scholarly community. The first MDPI Summit on Physical and Mathematical Sciences was successfully held in 2024, and the second summit will focus on the cutting-edge interdisciplinary field of quantum computing combined with artificial intelligence (AI), while further expanding academic discussions.

As the core of next-generation computing technology, quantum computing is developing rapidly and is expected to trigger a new round of quantum technological revolution. Its integration with AI has given rise to entirely new fields. Quantum circuit models and the quantization of classical algorithms can efficiently process large-scale data, demonstrating broad application prospects in various sectors, including production, daily life, and economic development. At this summit, we will conduct in-depth discussions—through keynote speeches and oral presentations—on the integration of quantum computing with machine learning algorithms, the application of quantum computing in AI, and the technical challenges and development trends faced by quantum artificial intelligence. We sincerely invite all scholars from relevant fields to participate in the summit.

Date: 22–24 August 2025 (registration on 22nd August)
Location: Hainan University (Haidian Campus), Haikou, China
Organizations:

• Organizer: MDPI;
• Co-Organizers:
  • Center for Theoretical Physics, Hainan University;
  • Graduate School of China Academy of Engineering Physics (GSCAEP).

Website: https://sciforum.net/event/PMSS2025
Registration: https://www.surveymonkey.com/r/ZG7PY7L

Conference chair: Prof. Dr. Chang-Pu Sun, Graduate School of China Academy of Engineering Physics, China.

Executive chairs: Prof. Dr. Qingyu Cai, Center for Theoretical Physics, Hainan University, and Dr. Ying Li, Graduate School of China Academy of Engineering Physics, China.

Science committee:

• Prof. Dr. Jiping Zhang, School of Mathematical Sciences, Peking University, China;
• Prof. Dr. Gang Zhao, National Astronomical Observatories, Chinese Academy of Sciences, China;
• Prof. Dr. Bingsong Zou, Department of Physics, Tsinghua University, China;  
• Prof. Dr. Wenhui Duan, Department of Physics, Tsinghua University, China;  
• Prof. Dr. Yaxiang Yuan, Academy of Mathematics and Systems Science, China.

To learn more about the conference and registration details, please click on the official website below, or register directly. We look forward to your participation.

Mathematics plays a pivotal role in all academic disciplines. From a methodological standpoint, research depends heavily on statistical testing and modeling. From a technical standpoint, math is critical in applied disciplines, such as engineering and architecture. From a theoretical standpoint, the rich history of logic and philosophy of mathematics has built the foundation for all scientific inquiries.

MDPI’s journal cluster of mathematics and its applications promotes the open exchange of contemporary ideas and developments in mathematical science. MDPI offers journals with broader scopes and readership, such as Mathematics (IF 2.2), as well as more specialized outlets for subdisciplines in pure and applied mathematics. Together, the aim is to provide more options to authors of varying situations.

The nine member journals in the cluster are the following:

• AppliedMath (ISSN: 2673-9909) focuses on studies that apply mathematical concepts, theories and methods to other subjects, such as physics, engineering, medicine, chemistry, biology, information science, energy, environmental science, finance, business, computer science, industry and social sciences. AppliedMath is led by Editor-in-Chief Prof. Dr. Takayuki Hibi (Osaka University, Japan);
• Axioms (ISSN: 2075-1680) focuses on studies related to mathematics, mathematical logic and mathematical physics. Axioms is led by Editor-in-Chief Prof. Dr. Humberto Bustince (Public University of Navarra, Spain);
• Computation (ISSN: 2079-3197) focuses on computational science and interdisciplinary applications, including computational engineering, computational chemistry, computational biology, and computational social science. Computation is led by Editor-in-Chief Prof. Dr. Ali Cemal Benim (Düsseldorf University of Applied Sciences, Germany);
• Fractal and Fractional (ISSN: 2504-3110) focuses on fractals and fractional calculus and their applications in different fields of science and engineering. Fractal and Fractional is led by Editor-in-Chief Prof. Dr. Carlo Cattani (University of Tuscia, Italy);
• Geometry (ISSN: 3042-402X) focuses on the diverse theories and applications of geometry. Areas of special interest include Euclidean geometry, differential geometry, algebraic geometry, complex geometry, discrete geometry, computational geometry, geometric group theory, geometric analysis, and convex geometry. Geometry is led by Editor-in-Chief Prof. Dr. Yang-Hui He (Royal Institution, UK);
• International Journal of Topology (IJT, ISSN: 2813-9542) focuses on differential topology, algebraic topology, manifolds, geometry, and related applications. Its purpose is to provide a platform for research and development in various fields of topology, expand topology to a wider range of applications, and promote the development of mathematics. International Journal of Topology is led by Editor-in-Chief Prof. Dr. Michel Planat (Université de Franche-Comté, France);
• Logics (ISSN: 2813-0405) focuses on all aspects of logic, including logical systems, methods and theories, mathematical logic, computational logic, philosophical logic and the history of philosophy of logic and mathematics. The journal also encompasses applications of logic to the sciences, such as computer science, cognitive science, and linguistics. Logics is led by Editor-in-Chief Prof. Dr. Valentin Goranko (Stockholm University, Sweden);
• Mathematics (ISSN: 2227-7390) focuses on studies related to mathematical sciences, including all areas of pure and applied mathematics. Mathematics is led by Editor-in-Chief Prof. Dr. Francisco Chiclana (De Montfort University, UK);
• Symmetry (ISSN: 2073-8994) focuses on research on symmetry/asymmetry phenomena wherever they occur in all aspects of natural sciences. Symmetry is led by Editor-in-Chief Prof. Dr. Sergei Odintsov (Institute of Space Sciences, Spain). Meanwhile, Prof. Dr. Ronggen Cai (Ningbo University, China) and Prof. Dr. Jiping Zhang (Peking University), Academicians of CAS, are serving as Honorary Editors-in-Chief.

Journals	Launch Year	Impact Factor (2024)	CiteScore (2024)	First Decision (Median Days)	Acceptance to Publication (Median Days)	APC (CHF)
	2021	0.7	1.1	23.5	6.9	1200
	2012	1.6	/	21.6	2.8	2400
	2013	1.9	4.1	16.7	5.6	1800
	2017	3.3	6.0	19.9	2.7	2700
	2024	/	/	19	4	1000
	2024	/	/	19	4	1000
	2023	/	/	/	/	1000
	2013	2.2	4.6	18.4	2.4	2600
	2009	2.2	5.3	17.1	2.8	2400

MDPI’s mission and values:

As a pioneer of academic open access publishing, MDPI has been serving the scientific community since 1996. Our aim is to foster scientific exchange in all forms across all disciplines. MDPI's guidelines for disseminating open science are based on the following values and guiding principles:

• Open Access—All of our content is published in open access and distributed under a Creative Commons License, providing free access to science and the latest research, allowing articles to be freely shared and content to be re-used with proper attribution;
• Timeliness and Efficiency—Publishing the latest research through thorough editorial work, ensuring a first decision is provided to authors in under 32 days and papers are published within 7-10 days upon acceptance;
• Simplicity—Offering user-friendly tools and services in one place to enhance the efficiency of our editorial process;
• High-Quality Service—Supporting scholars and their work by providing a range of options such as journal publication at mdpi.com, early publication at preprints.org, and conferences on sciforum.net to make a positive impact on research;
• Flexibility—Adapting and developing new tools and services to meet the changing needs of the research community, driven by feedback from authors, editors, and readers;
• Rooted in Sustainability—Ensuring the long-term preservation of published papers and supporting the future of science through partnerships, sponsorships, and awards.

By adhering to these values and principles, MDPI remains committed to advancing scientific knowledge and promoting open science practices.

Selected Topics:

• “Fractional Calculus, Symmetry Phenomenon and Probability Theory for PDEs, and ODEs”;
• “Fixed Point Theory and Measure Theory”;
• “Recent Trends in Nonlinear, Chaotic and Complex Systems”;
• “Distributed Optimization for Control, 2nd Edition”.

Selected articles:

AppliedMath
“Some Comments about the p-Generalized Negative Binomial (NBp) Model”

Geometry
“Rigidity of Holomorphically Projective Mappings of Kähler and Hyperbolic Kähler Spaces with Finite Complete Geodesics”

International Journal of Topology
“Persistent Homology on a Lattice of Multigraphs”

Logics
“Logics for Epistemic Actions: Completeness, Decidability, Expressivity”

Mathematics
“Fractional Differential Equations with the General Fractional Derivatives of Arbitrary Order in the Riemann–Liouville Sense”

Computation
“Computational Modelling and Simulation of Scaffolds for Bone Tissue Engineering”

Axioms
“Integrable Couplings and Two-Dimensional Unital Algebras”

Symmetry
“Uniform in Number of Neighbor Consistency and Weak Convergence of k-Nearest Neighbor Single Index Conditional Processes and k-Nearest Neighbor Single Index Conditional U-Processes Involving Functional Mixing Data”

Fractal and Fractional
“An Overview of Mathematical Modelling in Cancer Research: Fractional Calculus as Modelling Tool”