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 Computing Algorithms and Applications
edited by Lei Yue and
submission deadline 31 Dec 2025 | 8 articles | Viewed by 11188 | Submission Open
Keywords: symmetries of complex manufacturing systems; Artificial Intelligence (AI) in production scheduling; fuzzy computing; data analytics for manufacturing; cloud computing for manufacturing; predictive maintenance; real-time monitoring and control; supply chain optimization; computing applications; smart decision support for industry
(This special issue belongs to the Section Computer)
Symmetry in Combinatorics and Discrete Mathematics
edited by
submission deadline 31 Dec 2025 | 8 articles | Viewed by 9359 | Submission Open
Keywords: infinite or finite groups; semigroups; designs and configurations; enumerative combinatorics; determinants and permanents; combinatorial sequences
(This special issue belongs to the Section Mathematics)
Symmetry in Discrete and Combinatorial Geometry submission deadline 31 Dec 2025 | 3 articles | Viewed by 9148 | Submission Open
Keywords: polyhedra and polytopes; polyhedra and crystallography; crystal nets; polyhedral graphs; and skeletal polyhedral structures; polyhedra and maps on surfaces; tiling; packing; and covering; soft packings; nested clusters; and condensed matter; symmetry groups and reflection groups; discrete point sets; abstract polytopes; polyhedral design
(This special issue belongs to the Section Mathematics)
Asymmetric Centers in Optically Active Molecules Containing a Heteroatom submission deadline 31 Dec 2025 | 4 articles | Viewed by 8690 | Submission Open
Keywords: organometallic syntheses; heteroatomic asymmetry center; P-stereogenic center; asymmetric syntheses; enantioselective syntheses; resolution of racemates; optically active ligands; chiral P-ligands; homogeneous catalysis; transition metal complexes; chiral auxiliaries; chiral catalysts
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Symmetries and Ultra Dense Matter of Compact Stars II: Emergence of Symmetries in Strong Nuclear Correlations
edited by and Chihiro Sasaki
submission deadline 31 Dec 2025 | 6 articles | Viewed by 8478 | Submission Open
Keywords: superdense matter; topology changes; baryon parity-doublet symmetry; Cheshire cat mechanism; hadron-quark duality; emergent hidden symmetries; Weinberg’ s folk theorem; generalized Hohenberg-Kohn density functional; Landau– Migdal Fermi liquid; un-Fermi liquids; speed of sound; conformal symmetry; color superconductivity; neutron superfluidity
(This special issue belongs to the Section Physics)
Skewed (Asymmetrical) Probability Distributions and Applications Across Disciplines, Fourth Edition submission deadline 31 Dec 2025 | 8 articles | Viewed by 8435 | Submission Open
Keywords: new applications and parameter interpretations of the main skewed distributions; parameter estimation and statistical developments; advances in modelling and simulations (i.e.; Monte Carlo sampling) of processes in mathematics; physics; chemistry; biology; and social sciences; efficient numerical methods to handle skewed distributions; skewed distributions and the modelling of infectious diseases; including COVID-19; the true meaning of skewed distributions in nature; skewed distributions in psychological and neurological sciences; non-normal distributions in biological and medical sciences; skewed distributions in describing social processes; the origin and fundamental interpretations of skewed distributions in mathematics; physics; chemistry; biology; and social sciences
(This special issue belongs to the Section Mathematics)
Computational Mathematics and Its Applications in Numerical Analysis
edited by and
submission deadline 31 Dec 2025 | 7 articles | Viewed by 7895 | Submission Open
Keywords: computational mathematics for data science; applied mathematics in optimization problems; signal processing and mathematical images; scientific computing and algorithms; numerical analysis for problems arising in various fields 
(This special issue belongs to the Section Mathematics)
Symmetry in Nonlinear Partial Differential Equations and Rogue Waves
edited by
submission deadline 31 Dec 2025 | 4 articles | Viewed by 6812 | Submission Open
Keywords: nonlinear waves; coherent structures; the nonlinear Schrö dinger (NLS) equation; soliton on constant background; breathers; freak waves; rogue waves; extreme waves; wave packets; modulational instability; phase singularity; wavefront dislocation; variational formulation; maximum temporal amplitude; amplification factor; dissipation; surface gravity waves; nonlinear optics; superconductivity; plasma physics; Bose– Einstein condensates
(This special issue belongs to the Section Mathematics)
Discrete and Continuous Memristive Nonlinear Systems and Symmetry II
edited by , and
submission deadline 31 Dec 2025 | 3 articles | Viewed by 6267 | Submission Open
Keywords: chaos; nonlinear system; memristive system; fraction-order memristor; fractional-order memristive system; image encryption; neural network; brain-like computing; memristor based artificial intelligence; symmetry
(This special issue belongs to the Section Physics)
Computer-Aided Geometric Design and Matrices submission deadline 31 Dec 2025 | 3 articles | Viewed by 4851 | Submission Open
Keywords: matrices; total positivity; high relative accuracy; subdivision; splines and NURBS; shape analysis; isogeometric analysis; interpolation; approximation and smoothing; wavelets and multi-resolution methods; computer graphics; virtual design
(This special issue belongs to the Section Mathematics)
Recent Developments and Applications in Nonlinear Optics
edited by
submission deadline 31 Dec 2025 | 3 articles | Viewed by 4385 | Submission Open
Keywords: Lie symmetry analysis; optical soliton solutions; non-Kerr laws; integration methods; nonlinear Schrö dinger's equation
(This special issue belongs to the Section Physics)
Unraveling the Black Box: Unleashing the Power of Explainable Deep Learning in Advanced Engineering Sciences
edited by
submission deadline 31 Dec 2025 | 3 articles | Viewed by 4098 | Submission Open
Keywords: Explainable Deep Learning (XDL); medical image analysis; non-destructive testing; multi-modal data integration; interpretable deep learning models; genomic data analysis; big data analytics; autonomous vehicles; smart infrastructure systems; engineering sciences; AI transparency; digital twin; human action recognition
Supersymmetry and Supersymmetric Field Theories
edited by
submission deadline 31 Dec 2025 | 2 articles | Viewed by 4015 | Submission Open
Keywords: supergravity; superconformal field theories; supersymmetric objects; super integrable systems; AdS/CFT; relativistic and nonrelativistic holography; gauge super field theories; noncommutative quantum theories; supersymmetry in dynamical systems; supersymmetry in condensed matter and statistical physics
(This special issue belongs to the Section Physics)
Symmetry Fluid Dynamics in Materials and Metallurgical Processes
edited by and
submission deadline 31 Dec 2025 | 2 articles | Viewed by 3184 | Submission Open
Keywords: fluid dynamics; metallurgy; material processes; steelmaking; ladle refining; continuous casting; coppermaking; physical modeling; CFD
(This special issue belongs to the Section Engineering and Materials)
Advances in Perovskites: Growth, Characterization and Optoelectronic Devices
edited by Longxing Su
submission deadline 31 Dec 2025 | 2 articles | Viewed by 3155 | Submission Open
Keywords: inorganic perovskites; inorganic-organic hybrid perovskites; characterizations; lattice symmetric/asymmetric; stability; simulations/DFT calculations; photodetectors; solar cells; laser diodes; light-emitting diodes
(This special issue belongs to the Section Physics)
Trends and Prospects of Asymmetric and Symmetric Studies on Algorithms Optimizations
edited by and Jelena Misic
submission deadline 31 Dec 2025 | 2 articles | Viewed by 2910 | Submission Open
Keywords: symmetry; process optimization; optimization methods; machine learning; algorithm efficiency; model robustness; solution quality; interdisciplinary; economy; social activity; medicine; engineering
(This special issue belongs to the Section Computer)
Advances in Optical and Electrical Integrated Circuits with Symmetry/Asymmetry
edited by
submission deadline 31 Dec 2025 | 1 articles | Viewed by 2368 | Submission Open
(This special issue belongs to the Section Physics)
Symmetry and Asymmetry Study in Object Detection
edited by Vladimir Brtka, Dragan Kukolj, Dragan M. Samardžija and
submission deadline 31 Dec 2025 | 5 articles | Viewed by 2255 | Submission Open
Keywords: object detection; symmetry; asymmetry; computer vision; machine learning; pattern recognition; geometric properties; autonomous systems; robotics; medical imaging 
(This special issue belongs to the Section Computer)
Quantum Optics and Symmetry
edited by and Aimin Yan
submission deadline 31 Dec 2025 | 1 articles | Viewed by 2056 | Submission Open
Keywords: quantum optics; quantum neural network; quantum optical information processing; quantum symmetry
(This special issue belongs to the Section Physics)
Symmetry in Mathematical Optimization Algorithm and Its Applications
edited by Zhe Sun
submission deadline 31 Dec 2025 | 2 articles | Viewed by 1934 | Submission Open
Keywords: combinatorial optimization; machine learning algorithm; heuristic algorithm; algorithm design; systems optimization and control; NP hard Problem optimization; parameter identification
(This special issue belongs to the Section Mathematics)
Advances of Network Structures for Cooperative Working
edited by Yuhua Luo and
submission deadline 31 Dec 2025 | 1 articles | Viewed by 1853 | Submission Open
Keywords: network structures; impact of symmetry in networks; cooperative work; internet; social network; sensor network; neural network; Internet of Things; convolutional neural network; energy network; multi-cell; multi-unit structures
(This special issue belongs to the Section Computer)
Symmetry in Fractional Derivatives, Fractional Equations and Fractional Order Systems
edited by Xiaoling Han and Chenghua Gao
submission deadline 31 Dec 2025 | 3 articles | Viewed by 1809 | Submission Open
Keywords: fractional differential equations; delay differential equations; functional equations; partial differential equations; stochastic differential equations; integral equations; dynamical systems; applications of fixed-point theorems to nonlinear equations
(This special issue belongs to the Section Mathematics)
Symmetry and Asymmetry in Computer Vision and Graphics
edited by Yuanfeng Lian and Jian-wei Liu
submission deadline 31 Dec 2025 | 1 articles | Viewed by 1612 | Submission Open
Keywords: neural networks and deep learning; generative models; pre-training models; multimodal large models; cross-modal learning; object detection; tracking; and recognition; action recognition; three-dimensional reconstruction and rendering; computational geometry; shape analysis and retrieval; visualization and visual analysis; VR/AR/MR; digital twins; human– computer interaction; interactive machine learning; interactive embodied intelligence
(This special issue belongs to the Section Computer)
Symmetry/Asymmetry of Applications in Automation and Control Systems
edited by , Ping Wang and Qiang Shen
submission deadline 31 Dec 2025 | 3 articles | Viewed by 1331 | Submission Open
Keywords: automatic control; adaptive control; model predictive control; guidance; navigation and control; intelligent control
(This special issue belongs to the Section Engineering and Materials)
Symmetric Ordered Algebraic Structures and Lattice Theory
edited by
submission deadline 31 Dec 2025 | 1 articles | Viewed by 1302 | Submission Open
Keywords: algebraic structures; ordered algebra; commutative algebra; homological algebra; hypercompositional algebra; coding theory
(This special issue belongs to the Section Mathematics)
Symmetry in Nonlinear Dynamics
edited by Chaoran Liu, and Guobiao Hu
submission deadline 31 Dec 2025 | 2 articles | Viewed by 1116 | Submission Open
Keywords: Nonlinear Dynamics; Dynamical System; Symmetry
(This special issue belongs to the Section Engineering and Materials)
Selected Papers: Symmetry 2025—The Fifth Edition of the International Conference on Symmetry
edited by , Changzheng Qu and
submission deadline 31 Dec 2025 | 2 articles | Viewed by 1032 | Submission Open
Keywords: physics; mathematics; chemistry; engineering; computer science; symmetry applications
Symmetry and Its Application in Differential Geometry and Topology, 4th Edition
edited by and Tiehong Zhao
submission deadline 31 Dec 2025 | 2 articles | Viewed by 949 | Submission Open
Keywords: singularity theory; morse theory/discrete Morse theory; singularities; singular submanifolds; lightlike submanifolds; biharmonic submanifolds; warped product submanifolds; differentiable manifolds; Submanifold theory; Legendrian duality; front and frontal; physics; statistics; topological data analysis; computational topology; applied topology and geometry; topological and geometric methods in data analysis; spectral and geometric methods in machine learning and data analysis; persistent homology and cohomology; and applications; neuroscience; cancer biology; genomics; other sciences
(This special issue belongs to the Section Mathematics)
Symmetry/Asymmetry in Artificial Intelligence for Healthcare Applications
edited by Yonggang Zhang, Hangyu Li and
submission deadline 31 Dec 2025 | 1 articles | Viewed by 875 | Submission Open
Keywords: artificial intelligence; healthcare; symmetry; brain tumour diagnosis; autism spectrum disorders; multimodal models for disease diagnosis; personalized medicine
(This special issue belongs to the Section Computer)
Mathematics: Feature Papers 2025
edited by
submission deadline 31 Dec 2025 | 4 articles | Viewed by 837 | Submission Open
Keywords: dynamical systems; mathematical physics; geometrical and topological methods; applied mathematics; discrete mathematics and graph theory; mathematical analysis
(This special issue belongs to the Section Mathematics)
Symmetry in Computational and Mathematical Methods in Fractional Calculus, Second Edition submission deadline 31 Dec 2025 | 1 articles | Viewed by 686 | Submission Open
Keywords: fractional calculus; computational methods; mathematical methods; mathematical modeling
(This special issue belongs to the Section Mathematics)
Advances in Design and Analysis of Asymmetric Structures
edited by Xiaohua Li and Yongtao Bai
submission deadline 31 Dec 2025 | 2 articles | Viewed by 607 | Submission Open
Keywords: asymmetric structures; seismic design; torsional effects; nonlinear behavior; advanced materials; computational modeling; seismic resilience
(This special issue belongs to the Section Engineering and Materials)
The Fusion of Fuzzy Sets and Optimization Using Symmetry
edited by
submission deadline 31 Dec 2025 | 2 articles | Viewed by 602 | Submission Open
Keywords: fuzzy games theory; fuzzy vector optimization; fuzzy goal programming; arithmetics of fuzzy intervals; fuzzification of crisp functions; extension principle
(This special issue belongs to the Section Mathematics)
Mechanism Research and Artificial Intelligence for the Monitoring and Evaluation of Electrical Equipment in Smart Grids and Electrified Transportation
edited by Kui Chen, Yujun Guo and Kai Liu
submission deadline 31 Dec 2025 | Viewed by 522 | Submission Open
Keywords: smart grids; new energy; energy storage; electrified transportation; electrical equipment; artificial intelligence; mechanism research; symmetry theory; insulation performance; state evaluation
(This special issue belongs to the Section Engineering and Materials)
Symmetry in Gravitational Waves and Astrophysics
edited by Shaoqi Hou and Pengming Zhang
submission deadline 31 Dec 2025 | Viewed by 410 | Submission Open
Keywords: symmetry; gravitational waves; memory effects; soft theorems; infrared triangle; black holes; celestial holography; detection
(This special issue belongs to the Section Physics)
Novel Symmetric/Asymmetric Structures in High-Performance Photonic and Optoelectronic Devices
edited by Chuang Li, Jiaqi Liu and Sadeq Abbasi
submission deadline 31 Dec 2025 | Viewed by 369 | Submission Open
Keywords: carrier transport mechanism in the hetero/homojunction; semiconductor physics; charge carrier transport modulation; metasurface; photonic crystals; light field manipulation within nanoscale; photodetectors; solar cells; surface science; interface science; electronic structures; film fabrication technologies; passivation method; hydrophobic surfaces; organic and inorganic semiconductors
(This special issue belongs to the Section Engineering and Materials)
Advances in Topology and Algebraic Geometry submission deadline 31 Dec 2025 | Viewed by 366 | Submission Open
Keywords: general and algebraic topology; topological aspects of algebraic geometry; projective spaces; manifold topology; topological groups
(This special issue belongs to the Section Mathematics)
Symmetry in Physics: From Conservation to Violation
edited by Adailton A. Araújo Filho and
submission deadline 31 Dec 2025 | Viewed by 337 | Submission Open
Keywords: particle physics; Lorentz and CP violation; symmetry and broken symmetry; gravitation
(This special issue belongs to the Section Physics)
New Higgs-Like States
edited by and Kai-Feng Chen
submission deadline 31 Dec 2025 | Viewed by 336 | Submission Open
Keywords: particles and fields; Higgs boson; electroweak interactions; spontaneous symmetrybreaking; quantum chromodynamics; quark and lepton masses and mixing; models beyond the standard model; experimental methods and instrumentation for elementary-particle and nuclear physics; data analysis; extensions of Higgs sector; Higgs-like states; phase transitions; Higgs mode; top quark; cosmology; superconductivity
(This special issue belongs to the Section Physics)
Internet of Things and Symmetry
edited by
submission deadline 31 Dec 2025 | Viewed by 335 | Submission Open
Keywords: Internet of Things (IoT); symmetry in IoT networks; fault diagnosis and reliability; symmetric encryption; Energy-efficient IoT systems; network topology optimization; IoT interoperability; digital twins; sensor fusion; federated learning; geometric symmetry; edge computing; IoT security; symmetrical system design; smart cities and IoT
(This special issue belongs to the Section Computer)
Selected Papers from "2025 11th International Conference on Computing and Artificial Intelligence (ICCAI 2025)"
edited by
submission deadline 31 Dec 2025 | Viewed by 307 | Submission Open
Keywords: intelligent computing; genetic algorithm; simulated annealing algorithm; taboo search algorithm; evolutionary algorithm; heuristic algorithm; ant colony algorithm; artificial fish swarm algorithm; particle swarm algorithm; hybrid intelligent algorithm; immune algorithm; neural networks; machine learning; biocomputing; DNA computing; quantum computing; intelligent calculation and optimization; fuzzy logic; knowledge discovery; data mining; rough and fuzzy rough set; artificial intelligence and its applications; biometrics; pattern recognition; computer vision; machine vision; fingerprint recognition; face recognition; retina recognition; iris recognition; palmprint recognition; expert system; speech recognition; smart search; automatic programming; intelligent control; smart robot; language and image understanding; genetic programming; natural language processing; computer vision and robotics; adaptive systems; intelligent agent; intelligent control; neural net and support vector machine; fuzzy set theory; fuzzy control and system; knowledge management; intelligent and knowledge-based system; visual information processing; artificial intelligence tools and applications; AI applied to the IoT; health big data; intelligent manufacturing; smart clothing; computer and information technology; coding; cryptography; and information protection; compilers and operating systems; computer networks; mobile computing; and distributed systems; computer systems: architecture; parallel processing; and dependability; embedded systems; signal; image; and speech processing; software engineering; security and database systems; human– computer interaction; vision and graphics; programming languages; theory of computing; information systems; information technology; big data technologies and applications; mobile information systems; web intelligence applications and search; recent trends in information technology; computing in the internet of things; machine learning for the internet of everything; information retrieval
(This special issue belongs to the Section Computer)
Symmetry in Power System Dynamics and Control
edited by , and Abraham Efraim Rodríguez-Mata
submission deadline 31 Dec 2025 | Viewed by 305 | Submission Open
Keywords: modern power system control and integration; microgrid control; design; and applications; power converter design and control; design and application of advanced and intelligent controls; fault-tolerant control; modern power system operations under fault conditions
(This special issue belongs to the Section Engineering and Materials)
Advances in Quantum Theory with Symmetry
edited by Diandong Tang, Chad E. Hoyer and Xuechen Zheng
submission deadline 31 Dec 2025 | Viewed by 293 | Submission Open
Keywords: vibrational and/or electronic spectroscopy; molecular chirality and stereochemistry; symmetry-adapted machine learning for quantum chemistry; application of symmetry in quantum computing; topology in condensed matter physics
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Symmetry/Asymmetry in Sport Biomechanics submission deadline 31 Dec 2025 | Viewed by 287 | Submission Open
Keywords: symmetry; asymmetry; sports biomechanics; movement analysis; injury prevention; performance optimization; motion capture; wearable sensors; athletic training; biomechanical assessment
(This special issue belongs to the Section Life Sciences)
Symmetry/Asymmetry in Advanced Metamaterials and Their Applications
edited by Wangqiang Xiao and
submission deadline 31 Dec 2025 | Viewed by 258 | Submission Open
Keywords: advanced metamaterials; bound states in the continuum; parity-time symmetry; non-Hermitian system; optics/THz/microwave metasurfaces; zero stiffness; constant force mechanisms; optics control; acoustics control; vibration control; material design; innovative applications; symmetry; asymmetry
(This special issue belongs to the Section Engineering and Materials)
Symmetry in Advancing Digital Signal and Image Processing
edited by and
submission deadline 31 Dec 2025 | Viewed by 240 | Submission Open
Keywords: digital signal processing; image processing; feature extraction; machine learning; deep learning
(This special issue belongs to the Section Computer)
Applications Based on Symmetry and Asymmetry in Deep Learning and Artificial Intelligence Methods
edited by Changshuo Wang, and Meiqing Wu
submission deadline 31 Dec 2025 | Viewed by 211 | Submission Open
Keywords: point cloud symmetry; neural network architecture; symmetry-aware feature learning; 3D shape analysis; computer vision symmetry; deep learning invariance; geometric deep learning; symmetry detection; vision transformers; symmetrical pattern recognition
(This special issue belongs to the Section Computer)
Asymmetric and Symmetric Studies in Biostatistics
edited by Nicolò Navarin, Pietro Bongini, and Edmondo Trentin
submission deadline 31 Dec 2025 | Viewed by 193 | Submission Open
Keywords: biostatistics; data distributions; AI-enhanced bioinformatics
(This special issue belongs to the Section Life Sciences)
Symmetry and Asymmetry in Intelligent Transportation Systems (ITSs)
edited by and Jie Hu
submission deadline 31 Dec 2025 | Viewed by 191 | Submission Open
Keywords: symmetry; asymmetry; human-vehicle-environment; intelligent transportation
(This special issue belongs to the Section Computer)
Symmetry/Asymmetry in Spin Physics
edited by Tianbo Liu and Jinlong Zhang
submission deadline 31 Dec 2025 | Viewed by 180 | Submission Open
Keywords: nucleon spin structure; form factor; parton distribution function; fragmentation function; global polarization; heavy-ion collision; deep inelastic scattering; spin correlation; electron– ion collider
(This special issue belongs to the Section Physics)
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