Special Issues

Symmetry publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Symmetry in the Dark: Unification of Dark Matter and Dark Energy
edited by Fotios Anagnostopoulos
submission deadline 15 Sep 2025 | Viewed by 550 | Submission Open
Keywords: modified gravity; dark matter; dark energy; interacting dark energy (DE); clustering dark energy (DE); galaxy rotation curves; large-scale structure; gravitational waves; dark energy/dark matter (DE/DM) unification
(This special issue belongs to the Section Physics)
Aspects of Particle Physics and High Energy Physics- Dedicated to Zhengdao Li's 95 Anniversary submission deadline 30 Sep 2025 | 8 articles | Viewed by 18498 | Submission Open
(This special issue belongs to the Section Physics)
Symmetries and Anomalies in Flavour Physics
edited by , Thomas Blake and Farvah Nazila Mahmoudi
submission deadline 30 Sep 2025 | 8 articles | Viewed by 16897 | Submission Open
Keywords: flavor physics; physics beyond the standard model; anomalies; lepton flavor universality; lepto-quarks; Z’
(This special issue belongs to the Section Physics)
Symmetry/Asymmetry in Operations Research
edited by Yunfei Fang and Peng Wu
submission deadline 30 Sep 2025 | 9 articles | Viewed by 15699 | Submission Open
Keywords: supply chains management; production scheduling; routing optimization; transportation planning; intelligent manufacturing; operation management; optimization algorithm; mixed-integer programming
(This special issue belongs to the Section Computer)
Advanced Technologies in Electrical and Electronic Engineering, 3rd Edition submission deadline 30 Sep 2025 | 7 articles | Viewed by 13828 | Submission Open
Keywords: Asymmetrical Fault Characteristics Analysis; Three-phase imbalance analysis
(This special issue belongs to the Section Engineering and Materials)
Hidden Dark Sector in High Energy Physics
edited by Theodota Lagouri
submission deadline 30 Sep 2025 | 3 articles | Viewed by 12242 | Submission Open
Keywords: high energy collider physics; LHC; hidden dark sector; exotic Higgs decays; dark photon; dark matter (DM); beyond the Standard Model (BSM)
(This special issue belongs to the Section Physics)
Symmetry Applied in Biometrics Technology submission deadline 30 Sep 2025 | 2 articles | Viewed by 11979 | Submission Open
Keywords: biometrics; identification; symmetry; pattern recognition; soft biometrics; safety; security
(This special issue belongs to the Section Computer)
Symmetry and Asymmetry in Information Security and Network Security
edited by Bingwen Feng
submission deadline 30 Sep 2025 | 7 articles | Viewed by 11771 | Submission Open
Keywords: network security; data hiding; information security
(This special issue belongs to the Section Computer)
Chiral Symmetry, and Restoration in Nuclear Dense Matter
edited by Kazuo Tsushima, Anthony Thomas and Myung Ki Cheoun
submission deadline 30 Sep 2025 | 13 articles | Viewed by 11656 | Submission Open
Keywords: chiral symmetry in dense nuclear medium; chiral symmetry restoration; hadron properties; nucleon structure; quantum chromodynamics; compact star structure
(This special issue belongs to the Section Physics)
Symmetry in Functional Equations: Methods, Applications and Mathematical Models submission deadline 30 Sep 2025 | 5 articles | Viewed by 9550 | Submission Open
Keywords: mathematical modelling; numerical methods; random differential equations; optimization problems; engineering applications
(This special issue belongs to the Section Mathematics)
Symmetry and Graph Theory, 2nd Edition submission deadline 30 Sep 2025 | 9 articles | Viewed by 9215 | Submission Open
Keywords: metric dimension of graphs; topological indices; graph coloring; domination in graphs; Ramsey number; polynomials in graphs
(This special issue belongs to the Section Mathematics)
Symmetry, Asymmetry and Nonlinearity in Geomechanics
edited by , Peng Feng, and Weigang Shen
submission deadline 30 Sep 2025 | 8 articles | Viewed by 9205 | Submission Open
(This special issue belongs to the Section Engineering and Materials)
Symmetry in High Voltage and Insulation Technology
edited by , and
submission deadline 30 Sep 2025 | 4 articles | Viewed by 8587 | Submission Open
Keywords: environmentally friendly insulation materials; dielectric insulation; pulse power and discharge plasma; overvoltage suppression; high-voltage power equipment; electromagnetic compatibility; plasma diagnostic techniques; interaction between plasma dielectric materials
(This special issue belongs to the Section Engineering and Materials)
Symmetries of Difference Equations, Special Functions and Orthogonal Polynomials: 3rd Edition
edited by
submission deadline 30 Sep 2025 | 12 articles | Viewed by 8374 | Submission Open
Keywords: orthogonal polynomials; difference equations; symmetries in special functions; symmetries in orthogonal polynomials; symmetries of difference equations; the analytical properties and applications of special functions; inequalities for special functions; the integration of the products of special functions; the properties of ordinary and general families of special polynomials; operational techniques involving special polynomials; classes of mixed special polynomials and their properties; other miscellaneous applications of special functions and special polynomials
(This special issue belongs to the Section Mathematics)
Probability and Statistics Theory in Symmetry and Application from Machine Learning to Biomedical Data submission deadline 30 Sep 2025 | 5 articles | Viewed by 7869 | Submission Open
Keywords: limit theorems; probability and statistics; stochastic processes and its applications
(This special issue belongs to the Section Mathematics)
New Advances in Symmetric Cryptography
edited by Xiaoyang Dong
submission deadline 30 Sep 2025 | 5 articles | Viewed by 7651 | Submission Open
Keywords: block cipher; stream cipher; hash function; message authentication codes; authenticated encryption; cryptanalysis
(This special issue belongs to the Section Computer)
Symmetry in Optimal Control and Applications
edited by Xin Chen, Liu He and
submission deadline 30 Sep 2025 | 7 articles | Viewed by 7338 | Submission Open
Keywords: optimal control; robust control; uncertainty theory; computational methods; applications in robotics; fractional systems; biological systems; economic systems; energy optimization; symmetry in financial models and economic systems
(This special issue belongs to the Section Mathematics)
The Benefits That Physics Derives from the Concept of Symmetry submission deadline 30 Sep 2025 | 5 articles | Viewed by 6697 | Submission Open
Keywords: symmetric process; symmetry breaking; conservation law; measurement process; phenomenological model
(This special issue belongs to the Section Physics)
Symmetries and Symmetry-Breaking in Data Security
edited by Na Ren and
submission deadline 30 Sep 2025 | 4 articles | Viewed by 6569 | Submission Open
Keywords: data security; digital watermark; data encryption; data transactions; privacy-preserving computation; attack and defense
(This special issue belongs to the Section Computer)
Discussion of Properties and Applications of Integral Transform
edited by
submission deadline 30 Sep 2025 | 5 articles | Viewed by 6431 | Submission Open
Keywords: radon transform; wavelet and curvelet  transforms; generalized integral transforms; Fourier transform and its applications; application in AI; hypercomplex generalization of integral transforms; kernel theory; application in engineering; convolution theory; integral equations
(This special issue belongs to the Section Mathematics)
Quantum Gravity and Cosmology: Exploring the Astroparticle Interface submission deadline 30 Sep 2025 | 6 articles | Viewed by 6072 | Submission Open
Keywords: quantum gravity theories; very early-universe physics; inflationary cosmology; primordial non-Gaussianity; primordial black holes; cosmological phase transitions; modified gravity; dark matter physics; dark energy; BSM physics and cosmology; cosmic tensions (H0 and beyond); black hole physics; machine learning methods in cosmology
(This special issue belongs to the Section Physics)
Symmetry Applications in Uncertain Differential Equations
edited by Anshui Li, Waichon Lio and Baoding Liu
submission deadline 30 Sep 2025 | 6 articles | Viewed by 5585 | Submission Open
Keywords: uncertain differential equation; uncertain statistics; uncertainty theory; uncertain finance; symmetry; uncertain process; uncertain renewal process; uncertain calculus
(This special issue belongs to the Section Mathematics)
Symmetry and Asymmetry in Cyber Security, IoTs and Privacy
edited by Rodrigo Sanches Miani and
submission deadline 30 Sep 2025 | 2 articles | Viewed by 5284 | Submission Open
Keywords: cryptosystems; cryptographic protocols; communication and privacy; Internet of Things; attack– defense asymmetry; machine learning and cybersecurity; legal and ethical aspects of cybersecurity; cybersecurity policies
(This special issue belongs to the Section Computer)
Advances in Machine Learning with Symmetry/Asymmetry in Transportation
edited by and Yangsheng Jiang
submission deadline 30 Sep 2025 | 3 articles | Viewed by 4422 | Submission Open
Keywords: traffic safety algorithms; symmetry design; dynamic modeling; parameter identification; real-time accident prediction; risk assessment; environmental perception; decision planning; trajectory tracking control
(This special issue belongs to the Section Computer)
Applications Based on Symmetry/Asymmetry in Functional Data Analysis
edited by Nengxiang Ling
submission deadline 30 Sep 2025 | 2 articles | Viewed by 4278 | Submission Open
(This special issue belongs to the Section Mathematics)
Mathematical Modeling of Symmetry in Collective Biological Dynamics
edited by
submission deadline 30 Sep 2025 | 2 articles | Viewed by 4056 | Submission Open
Keywords: collective behavior; mathematical modeling; biomathematics; emergent properties; symmetry analysis
(This special issue belongs to the Section Mathematics)
Symmetry and Asymmetry in Multivariate Statistics and Data Science, Second Edition submission deadline 30 Sep 2025 | 2 articles | Viewed by 2956 | Submission Open
Keywords: asymmetry; cumulants; moments; multilinear algebra; skewness; symmetry; tensor
(This special issue belongs to the Section Mathematics)
Nature and Origin of Dark Matter and Dark Energy, 2nd Edition submission deadline 30 Sep 2025 | 2 articles | Viewed by 2871 | Submission Open
Keywords: dark matter; dark energy; cosmology; galaxies; CMB; universe; expansion; cosmological constant
(This special issue belongs to the Section Physics)
Symmetry and Its Applications in Automation and Control Systems
edited by
submission deadline 30 Sep 2025 | 2 articles | Viewed by 2366 | Submission Open
Keywords: symmetry control; control systems; control theory; symmetry applications; automation control
(This special issue belongs to the Section Engineering and Materials)
Selected Papers from “3rd International Conference: Constructive Mathematical Analysis”
edited by , and Donal O’Regan
submission deadline 30 Sep 2025 | 2 articles | Viewed by 2242 | Submission Open
Keywords: constructive mathematical analysis; operator theory; function analysis; fourier analysis; sampling series; approximation theory; linear positive operators
(This special issue belongs to the Section Mathematics)
Spin Chirality and Molecular Magnetism
edited by Guangchen Li and
submission deadline 30 Sep 2025 | 1 articles | Viewed by 1935 | Submission Open
Keywords: symmetry relation; spin chirality; molecular magnetism; spin selectivity; spin dynamics; chiral magnetic textures; topological materials
(This special issue belongs to the Section Physics)
Symmetry Aspects in Quantum Computing
edited by
submission deadline 30 Sep 2025 | 1 articles | Viewed by 1611 | Submission Open
Keywords: quantum computing (QC); symmetry theory; Lie algebras and Lie groups; quantum encoding & mapping; quantum circuits; quantum chemistry; molecular physics; spin-adapted calculations; symmetry conservation; symmetry breaking; quantum walk;   quantum formalisms; quantum algorithms; quantum computer engineering; symmetry in quantum simulations; quantum information theory
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Symmetry in Gravitational Wave Physics
edited by Zhi Wang
submission deadline 30 Sep 2025 | 1 articles | Viewed by 886 | Submission Open
Keywords: gravitational wave; laser interferometer; telescope; inertial sensor
(This special issue belongs to the Section Physics)
Symmetry/Asymmetry in Robust Chaos and Chaotification–Theory and Applications submission deadline 30 Sep 2025 | Viewed by 741 | Submission Open
Keywords: robust chaos; chaotification; S-unimodal maps; hidden attractors; AI methods in modeling chaotic systems; symmetric features (phase diagrams; equilibria; antimonotonicity); chaos applications; chaos symmetric encryption; machine learning techniques for cryptanalysis of chaotic encryption; chaos path planning; chaos PRBG
Symmetry in Dark Matter and Black Holes
edited by Peng Liu
submission deadline 30 Sep 2025 | Viewed by 618 | Submission Open
Keywords: symmetry; dark matter; black holes; gravity; gravitational waves; black hole imaging; symmetry breaking; cosmology
(This special issue belongs to the Section Physics)
Cyber-Physical Power System and Symmetry Analysis
edited by Huifeng Zhang, and
submission deadline 30 Sep 2025 | Viewed by 465 | Submission Open
Keywords: symmetry; power systems; renewable energy systems; topology; smart grids; electrical signals
(This special issue belongs to the Section Engineering and Materials)
Symmetries/Asymmetries in Particle Physics
edited by
submission deadline 30 Sep 2025 | Viewed by 404 | Submission Open
Keywords: particles; standard model; big bang; quark; symmetry
(This special issue belongs to the Section Physics)
Symmetry in Ultracold Gases and Superfluidity
edited by Bo Liu and
submission deadline 30 Sep 2025 | Viewed by 363 | Submission Open
Keywords: many-body physics; topological states of matter; superfluidity; ultracold gases; quantum simulation
(This special issue belongs to the Section Physics)
Computational Intelligence and Symmetry
edited by and Xin Zhang
submission deadline 30 Sep 2025 | Viewed by 200 | Submission Open
Keywords: evolutionary computation; computational intelligence; deep learning; scRNA-seq data; gene expression data; biomarker finding
(This special issue belongs to the Section Computer)
Generalized Symmetries and Fractons in Gauge Theories submission deadline 30 Oct 2025 | 1 articles | Viewed by 1562 | Submission Open
Keywords: symmetries; anomalies; quantum field theory; string theory; fractons; spontaneous symmetry breaking; low-energy effective field theory; quantum phases of matter
(This special issue belongs to the Section Physics)
From Symmetry to Fluctuations: Topics and Advances in Statistical Mechanics and Probability Theory
edited by
submission deadline 30 Oct 2025 | 1 articles | Viewed by 458 | Submission Open
Keywords: symmetry and invariance in probabilistic and statistical mechanical models; spontaneous symmetry breaking and emergent phenomena in phase transitions; fluctuation theorems and non-equilibrium thermodynamics; large deviation theory; concentration inequalities; and stochastic stability; interacting particle systems; random fields; and spin models; markov processes; stochastic dynamics; and ergodic behavior; random matrix theory and applications in complex systems; dynamical processes in maximum caliber principles; quantum statistical mechanics and entropic principles; applications in data science; machine learning; and inference via statistical mechanics
(This special issue belongs to the Section Physics)
Finite and Continuous Symmetries in Quantum-Mechanical Theory
edited by
submission deadline 30 Oct 2025 | Viewed by 337 | Submission Open
Keywords: Longuet-Higgins group; potential algebra; shape-invariant potentials; spectra-generating algebras; superintegrability; Lie algebras; representations of finite groups
(This special issue belongs to the Section Physics)
Current Status and Progress in Research on Molecular Symmetry
edited by José Luis Paz and
submission deadline 30 Oct 2025 | Viewed by 134 | Submission Open
Keywords: molecular symmetry; chirality; supramolecular structures; liquid crystals; biomedical; bioinformatics; photonics applications
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Fibonacci and Lucas Numbers and the Golden Ratio in Physics and Biology submission deadline 31 Oct 2025 | 7 articles | Viewed by 39829 | Submission Open
Keywords: Fibonacci and Lucas numbers; golden ratio; symmetry; quantum physics; DNA/RNA; mathematical biology; genetic code
(This special issue belongs to the Section Physics)
Symmetry in Computational Intelligence and Applications submission deadline 31 Oct 2025 | 5 articles | Viewed by 38848 | Submission Open
(This special issue belongs to the Section Computer)
Symmetrical and Asymmetrical Distributions in Statistics and Data Science II submission deadline 31 Oct 2025 | 9 articles | Viewed by 15680 | Submission Open
Keywords: Artificial Intelligence; computational statistics; data science; hypothesis testing; machine learning; parameter estimation; probability distributions; skewness; statistical data analysis; statistical inference
(This special issue belongs to the Section Mathematics)
Symmetry in Statistical Mechanics and Complex Dynamical Systems submission deadline 31 Oct 2025 | 7 articles | Viewed by 13551 | Submission Open
Keywords: cellular automata; coupled map lattices; nonlinear partial differential equations; entropy; partition function; complexity; nonlinear oscillators; exactly solved models; computer simulations
(This special issue belongs to the Section Physics)
Symmetry and Asymmetry in Communications Engineering Ⅱ submission deadline 31 Oct 2025 | 3 articles | Viewed by 11810 | Submission Open
(This special issue belongs to the Section Computer)
Symmetry and Its Applications in Partial Differential Equations
edited by and Dianchen Lu
submission deadline 31 Oct 2025 | 7 articles | Viewed by 9890 | Submission Open
Keywords: partial differential equations; mathematical methods; exact solutions; solitons; solitary waves; analytical and numerical wave solutions
(This special issue belongs to the Section Mathematics)
Symmetry/Asymmetry of Differential Equations in Biomathematics
edited by Liang Zhang, Junli Liu and Tailei Zhang
submission deadline 31 Oct 2025 | 7 articles | Viewed by 8512 | Submission Open
Keywords: differential equations; dynamical systems; symmetry/asymmetry; population model; epidemic model; dynamical behavior; simulation
(This special issue belongs to the Section Mathematics)
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