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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Advanced Technologies in Electrical and Electronic Engineering, 3rd Edition submission deadline 30 Sep 2025 | 7 articles | Viewed by 12341 | Submission Open
Keywords: Asymmetrical Fault Characteristics Analysis; Three-phase imbalance analysis
(This special issue belongs to the Section Engineering and Materials)
Symmetry Applied in Biometrics Technology submission deadline 30 Sep 2025 | 2 articles | Viewed by 9761 | 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 | 6 articles | Viewed by 9526 | Submission Open
Keywords: network security; data hiding; information security
(This special issue belongs to the Section Computer)
Symmetry in the Soliton Theory
edited by , Dianchen Lu, and
submission deadline 30 Sep 2025 | 4 articles | Viewed by 8956 | Submission Open
Keywords: soliton; solitary waves; dynamical systems theory; bifurcation analysis; exact solutions; approximate solutions; numerical methods; fractional partial differential equations; fractional calculus; Darboux transformation; Bä cklund transformation; homotopy analysis method; homotopy perturbation method; lie symmetry; laplace transform
(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 8642 | Submission Open
Keywords: mathematical modelling; numerical methods; random differential equations; optimization problems; engineering applications
(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 | 6 articles | Viewed by 6787 | Submission Open
(This special issue belongs to the Section Engineering and Materials)
Probability and Statistics Theory in Symmetry and Application from Machine Learning to Biomedical Data submission deadline 30 Sep 2025 | 5 articles | Viewed by 6645 | Submission Open
Keywords: limit theorems; probability and statistics; stochastic processes and its applications
(This special issue belongs to the Section Mathematics)
Symmetry in High Voltage and Insulation Technology
edited by , and
submission deadline 30 Sep 2025 | 4 articles | Viewed by 6377 | 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)
New Advances in Symmetric Cryptography
edited by Xiaoyang Dong
submission deadline 30 Sep 2025 | 4 articles | Viewed by 6288 | Submission Open
Keywords: block cipher; stream cipher; hash function; message authentication codes; authenticated encryption; cryptanalysis
(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 5622 | 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)
Symmetry and Graph Theory, 2nd Edition submission deadline 30 Sep 2025 | 7 articles | Viewed by 5508 | 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 Applications in Uncertain Differential Equations
edited by Anshui Li, Waichon Lio and Baoding Liu
submission deadline 30 Sep 2025 | 5 articles | Viewed by 4559 | 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)
Symmetries and Symmetry-Breaking in Data Security
edited by Na Ren and
submission deadline 30 Sep 2025 | 3 articles | Viewed by 4118 | 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)
Nonlinear Analysis and Applications, Geometry of Banach Spaces and Symmetry II submission deadline 30 Sep 2025 | 4 articles | Viewed by 3854 | Submission Open
Keywords: fixed-point theory and applications; best proximity point theory and applications; nonlinear operator theory and applications; generalized contractive mappings; equilibrium problems and applications; variational inequality problems and applications; optimization problems and applications; game theory and applications; numerical algorithms for nonlinear problems; well-posedness in fixed-point theory; stability of functional equations related to fixed-point theory; differential and integral equations; geometry of banach spaces; symmetry
(This special issue belongs to the Section Mathematics)
Applications Based on Symmetry/Asymmetry in Functional Data Analysis
edited by Nengxiang Ling
submission deadline 30 Sep 2025 | 2 articles | Viewed by 3780 | Submission Open
(This special issue belongs to the Section Mathematics)
Symmetries of Difference Equations, Special Functions and Orthogonal Polynomials: 3rd Edition
edited by
submission deadline 30 Sep 2025 | 7 articles | Viewed by 3741 | 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)
Advances in Image Processing with Symmetry/Asymmetry
edited by and Shunli Zhang
submission deadline 30 Sep 2025 | 3 articles | Viewed by 3668 | Submission Open
Keywords: Image processing; symmetry; asymmetry; computer vision; feature extraction; pattern recognition; deep learning; medical imaging; remote sensing
(This special issue belongs to the Section Computer)
Mathematical Modeling of Symmetry in Collective Biological Dynamics
edited by
submission deadline 30 Sep 2025 | 2 articles | Viewed by 3447 | Submission Open
Keywords: collective behavior; mathematical modeling; biomathematics; emergent properties; symmetry analysis
(This special issue belongs to the Section Mathematics)
Symmetry in Optimal Control and Applications
edited by Xin Chen, Liu He and
submission deadline 30 Sep 2025 | 3 articles | Viewed by 3362 | 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)
Symmetry and Asymmetry Study in Graph Theory
edited by
submission deadline 30 Sep 2025 | 3 articles | Viewed by 3323 | Submission Open
Keywords: symmetry in graph theory; fault diagnosis of nodes or links in interconnected networks; combinatorial algorithms; graph neural networks (GNNs); integration of graph properties with uncertainty; restricted connectivity and diagnosability of multiprocessor systems; algorithmic complexity in graph theory
(This special issue belongs to the Section Computer)
The Benefits That Physics Derives from the Concept of Symmetry submission deadline 30 Sep 2025 | 3 articles | Viewed by 3151 | Submission Open
Keywords: symmetric process; symmetry breaking; conservation law; measurement process; phenomenological model
(This special issue belongs to the Section Physics)
Quantum Gravity and Cosmology: Exploring the Astroparticle Interface submission deadline 30 Sep 2025 | 3 articles | Viewed by 2621 | 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 and Asymmetry in Cyber Security, IoTs and Privacy
edited by Rodrigo Sanches Miani and
submission deadline 30 Sep 2025 | 1 articles | Viewed by 2296 | 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)
Symmetry and Asymmetry in Multivariate Statistics and Data Science, Second Edition submission deadline 30 Sep 2025 | 2 articles | Viewed by 2207 | Submission Open
Keywords: asymmetry; cumulants; moments; multilinear algebra; skewness; symmetry; tensor
(This special issue belongs to the Section Mathematics)
Advances in Machine Learning with Symmetry/Asymmetry in Transportation
edited by and Yangsheng Jiang
submission deadline 30 Sep 2025 | 2 articles | Viewed by 2017 | 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)
Nature and Origin of Dark Matter and Dark Energy, 2nd Edition submission deadline 30 Sep 2025 | 1 articles | Viewed by 1995 | Submission Open
Keywords: dark matter; dark energy; cosmology; galaxies; CMB; universe; expansion; cosmological constant
(This special issue belongs to the Section Physics)
Advances in Symmetry/Asymmetry and Biomedical Engineering
edited by and
submission deadline 30 Sep 2025 | 2 articles | Viewed by 1879 | Submission Open
Keywords: vascular disease; biomarkers; brain science; cognitive neuroscience; neurological dysfunctions; brain functional network connectivity; hyperscanning; motion and rehabilitation
(This special issue belongs to the Section Life Sciences)
Symmetry and Its Applications in Automation and Control Systems
edited by
submission deadline 30 Sep 2025 | 2 articles | Viewed by 1866 | Submission Open
Keywords: symmetry control; control systems; control theory; symmetry applications; automation control
(This special issue belongs to the Section Engineering and Materials)
Spin Chirality and Molecular Magnetism
edited by Guangchen Li and
submission deadline 30 Sep 2025 | 1 articles | Viewed by 1597 | 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)
Selected Papers from “3rd International Conference: Constructive Mathematical Analysis”
edited by , and Donal O’Regan
submission deadline 30 Sep 2025 | Viewed by 1173 | 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)
Symmetry Aspects in Quantum Computing
edited by
submission deadline 30 Sep 2025 | 1 articles | Viewed by 931 | 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/Asymmetry in Robust Chaos and Chaotification–Theory and Applications submission deadline 30 Sep 2025 | Viewed by 601 | 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 535 | 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)
Symmetry in Microwave Energy Applications and Microwave Characterization
edited by Zhe Wu
submission deadline 30 Sep 2025 | 1 articles | Viewed by 427 | Submission Open
Keywords: microwave energy; microwave heating; microwave chemistry; near-field microwave; microwave microscopy; microwave characterization; microwave imaging
(This special issue belongs to the Section Engineering and Materials)
Cyber-Physical Power System and Symmetry Analysis
edited by Huifeng Zhang, and
submission deadline 30 Sep 2025 | Viewed by 380 | 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 304 | Submission Open
Keywords: particles; standard model; big bang; quark; symmetry
(This special issue belongs to the Section Physics)
Symmetry and Stochasticity in Mathematical Biology and Ecology
edited by , Ling Zhong, Abdelilah Jraifi, Aziz Darouichi, Amine Hamdache and Albatoul Khaled
submission deadline 30 Sep 2025 | Viewed by 268 | Submission Open
Keywords: symmetry and randomness in genetics; symmetry and nondeterminism in nature; stochastic dynamical systems in biology and medicine; stochastic dynamical systems in environmental sustainability and bioeconomy; asymmetry and imperfection in biology and ecosystems
(This special issue belongs to the Section Mathematics)
Symmetry in Gravitational Wave Physics
edited by Zhi Wang
submission deadline 30 Sep 2025 | Viewed by 239 | Submission Open
Keywords: gravitational wave; laser interferometer; telescope; inertial sensor
(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 222 | Submission Open
Keywords: many-body physics; topological states of matter; superfluidity; ultracold gases; quantum simulation
(This special issue belongs to the Section Physics)
Symmetry in Beam–Plasma Physics
edited by Alessio Del Dotto, Alessandro Curcio and Andrei C. Berceanu
submission deadline 30 Sep 2025 | Viewed by 197 | Submission Open
Keywords: beam (particle or laser)– plasma interaction; plasma wakefield acceleration; inertial fusion; nuclear astrophysics; quantum electrodynamics (QED); beam dynamics in plasma; collective modes; gauge symmetries; plasma-based applications
(This special issue belongs to the Section Physics)
Computational Intelligence and Symmetry
edited by and Xin Zhang
submission deadline 30 Sep 2025 | Viewed by 138 | 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)
Symmetry/Asymmetry in Quantum Chromodynamics (QCD)
edited by Joao Pacheco B.C. de Melo and George H.S. Yabusaki
submission deadline 30 Sep 2025 | Viewed by 137 | Submission Open
Keywords: quantum chromodynamics (QCD); elementary particle physics; hadron physics; symmetries; quantum field theory
(This special issue belongs to the Section Physics)
Applications of Symmetry/Asymmetry in Structural Dynamics and Structural Health Monitoring
edited by
submission deadline 30 Sep 2025 | Viewed by 121 | Submission Open
Keywords: symmetry/asymmetry; structural health monitoring; structural damage detection; structural dynamics; sensor technology; signal processing techniques
(This special issue belongs to the Section Engineering and Materials)
Black Holes in String Theory and Field Theory: Symmetry and Topics
edited by Oscar Gerardo Loaiza-Brito and Miguel Sabido
submission deadline 30 Sep 2025 | Viewed by 100 | Submission Open
Keywords: black holes; string theory; field theory; global symmetries; extra dimensions; quantum gravity; holography; supersymmetry; supergravity
(This special issue belongs to the Section Physics)
Generalized Symmetries and Fractons in Gauge Theories submission deadline 30 Oct 2025 | 1 articles | Viewed by 935 | 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)
Finite and Continuous Symmetries in Quantum-Mechanical Theory
edited by
submission deadline 30 Oct 2025 | Viewed by 222 | 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)
From Symmetry to Fluctuations: Topics and Advances in Statistical Mechanics and Probability Theory
edited by
submission deadline 30 Oct 2025 | Viewed by 71 | 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)
Fibonacci and Lucas Numbers and the Golden Ratio in Physics and Biology submission deadline 31 Oct 2025 | 7 articles | Viewed by 34280 | 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 | 3 articles | Viewed by 31461 | 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 | 8 articles | Viewed by 12507 | 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)
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