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 and Nonlinearity in Optics submission deadline 30 Nov 2026 | 3 articles | Viewed by 3242 | Submission Open
Keywords: classical optics; quantum optics; nonlinear optics; symmetry; PT-symmetry; non-Hermitian systems; nonlinear systems; nonlinear processes; quantum correlations; quantum technologies; classical chaos; quantum chaos
(This special issue belongs to the Section C: Physics)
Symmetry-Aware Generative AI: Emerging Trends and Applications in Intelligent Transportation Systems submission deadline 30 Nov 2026 | 1 articles | Viewed by 2946 | Submission Open
Keywords: symmetry in artificial intelligence; generative AI; smart transportation systems; neural network architectures; symmetric analysis
(This special issue belongs to the Section A: Computer Science)
Symmetry in Mathematical Analysis and Applications, 2nd Edition
edited by
submission deadline 30 Nov 2026 | 3 articles | Viewed by 2801 | Submission Open
Keywords: differential equations; functional analysis; mathematical models; computational analysis; applications of mathematical analysis
(This special issue belongs to the Section B: Mathematics)
Symmetry Methods and Applications in Quantum Optics and Quantum Information submission deadline 30 Nov 2026 | 2 articles | Viewed by 1984 | Submission Open
Keywords: quantum correlations; optomagnomechanical system; open quantum system; coherence; quantum thermodynamics; symmetry methods; representation theory; quantum metrology; quantum geometry; quantum teleportation
(This special issue belongs to the Section C: Physics)
Algebras and Symmetry in Fuzzy Set Theory submission deadline 30 Nov 2026 | 2 articles | Viewed by 1539 | Submission Open
Keywords: fuzzy algebraic systems; fuzzy set symmetry; generalized fuzzy sets; hybrid fuzzy models; algebraic semantics of fuzzy logic; symmetric fuzzy relations; fuzzy equivalence relations; symmetric aggregation operators
(This special issue belongs to the Section B: Mathematics)
Symmetry and Thermal Engineering
edited by and Leonardo Peña Pupo
submission deadline 30 Nov 2026 | 1 articles | Viewed by 1431 | Submission Open
Keywords: energies; thermal radiation; thermal power systems; thermal science; thermal engineering; thermal management
(This special issue belongs to the Section F: Engineering and Materials)
Symmetry and Asymmetry in Dynamical Systems
edited by , Jesús Guerrero Tavares and
submission deadline 30 Nov 2026 | 1 articles | Viewed by 1374 | Submission Open
Keywords: mathematical modeling; power converter systems; wind energy; control theory; control algorithms; robotics; nonlinear systems; optical techniques; optical instrumentation; solar energy
(This special issue belongs to the Section B: Mathematics)
Asymmetry Implications in Recent Pharmacy and Medicine
edited by and Alina Cozma
submission deadline 30 Nov 2026 | Viewed by 763 | Submission Open
Keywords: structural symmetry/asymmetry; chirality; metal complexes of organic compounds; crystal lattices; drug design
(This special issue belongs to the Section D: Chemistry: Symmetry/Asymmetry)
Symmetry and Asymmetry in Astrophysics and Gravitation
edited by and Wenbin Lin
submission deadline 30 Nov 2026 | Viewed by 587 | Submission Open
Keywords: general relativity; symmetries; astrophysics; cosmology; symmetry breaking; quantum gravity; black holes; topology change; extra-dimensions
(This special issue belongs to the Section C: Physics)
Symmetry and Asymmetry in Sports and Physical Fitness: Gait, Posture and Strength
edited by
submission deadline 30 Nov 2026 | 1 articles | Viewed by 562 | Submission Open
Keywords: biomechanics; movement analysis; postural symmetry; gait symmetry; muscular strength imbalance; physical fitness; sports performance; injury prevention
(This special issue belongs to the Section E: Life Sciences)
Advances in Quantum Gravity: Unifying Symmetry and Spacetime submission deadline 30 Nov 2026 | Viewed by 500 | Submission Open
Keywords: quantum groups and non-commutative spacetime; loop quantum gravity and spin foams; Hořava–Lifshitz gravity and asymptotic safety; string theory, holography, and generalized symmetries; emergent gravity and quantum foundations; phenomenology and observational frontiers
(This special issue belongs to the Section C: Physics)
Symmetry and Approximation Methods, 3rd Edition
edited by
submission deadline 30 Nov 2026 | 1 articles | Viewed by 454 | Submission Open
Keywords: padé approximants; renormalization group methods; self-similar approximation; asymptotic analysis; accelerated convergence methods
(This special issue belongs to the Section B: Mathematics)
Symmetry/Asymmetry in Solar Physics: Latest Advances and Prospects
edited by and Zesen Huang
submission deadline 30 Nov 2026 | Viewed by 453 | Submission Open
Keywords: solar physics; symmetry and asymmetry; solar eruptions; plasma physics; heliosphere; space weather; energetic particles
(This special issue belongs to the Section C: Physics)
Symmetry in Computer Vision and Machine Learning
edited by and
submission deadline 30 Nov 2026 | Viewed by 422 | Submission Open
Keywords: computer version; machine learning; symmetry; data efficiency; robustness
(This special issue belongs to the Section A: Computer Science)
Symmetry and Power Electronics: Theory, Design, and Applications
edited by , and Edgar Peralta-Sánchez
submission deadline 30 Nov 2026 | Viewed by 395 | Submission Open
Keywords: symmetry; power electronics; converter topologies; duality; multiphase systems; harmonic analysis; control algorithms; energy conversion; wide-bandgap devices; system optimization; renewable energy integration
(This special issue belongs to the Section F: Engineering and Materials)
The Research of Symmetry and Asymmetry in Biomechanics submission deadline 30 Nov 2026 | Viewed by 390 | Submission Open
Keywords: biomechanics; motor control; symmetry; asymmetry; interlimb coordination; gait analysis; injury prevention; sports biomechanics; musculoskeletal modeling
(This special issue belongs to the Section E: Life Sciences)
Symmetry and Stability in Advanced Power and Energy Systems submission deadline 30 Nov 2026 | Viewed by 341 | Submission Open
Keywords: power systems ; stability control ; renewable energy integration ; energy storage ; symmetrical components ; electric vehicle grid integration
(This special issue belongs to the Section F: Engineering and Materials)
Symmetry and Asymmetry in Audio and Speech Processing
edited by , Anas El Ansari and Ouissam Zealouk
submission deadline 30 Nov 2026 | Viewed by 334 | Submission Open
Keywords: automatic speech recognition (ASR); speech detection system; symmetry/asymmetry-aware learning; robust speech enhancement (noise/reverberation); microphone arrays and beamforming; self-supervised speech representation learning; accent/dialect variability and domain adaptation; privacy-preserving speech recognition; spoofing/deepfake detection and security
(This special issue belongs to the Section A: Computer Science)
Symmetry in Quantum Materials
edited by Hemian Yi and
submission deadline 30 Nov 2026 | Viewed by 331 | Submission Open
Keywords: symmetry; quantum materials; topological state of matter; unconventional superconductivity; correlated systems
(This special issue belongs to the Section C: Physics)
Symmetry in Electrode Materials: Structure, Properties and Applications
edited by and René Antaño-López
submission deadline 30 Nov 2026 | Viewed by 263 | Submission Open
Keywords: electrochemical systems; material characterization; modelling and computer simulation; renewable energies; supercapacitors; batteries; electrochemical performance; stability and lifespan; rational design of new materials; optimization through symmetry breaking
(This special issue belongs to the Section F: Engineering and Materials)
Symmetry in the Dark Sector of the Universe and Recent Astronomical Observations submission deadline 30 Nov 2026 | Viewed by 237 | Submission Open
Keywords: dark sector; dark matter; dark energy; symmetry breaking; gauge symmetries; beyond the standard model (BSM); early universe cosmology; cosmological phase transitions
(This special issue belongs to the Section C: Physics)
Symmetry and Asymmetry in Rockburst Prevention and Control for Deep Mining Engineering
edited by
submission deadline 30 Nov 2026 | Viewed by 233 | Submission Open
Keywords: rock burst; coal burst; mine tremors; microseismic monitoring; coal-rock dynamic disasters; engineering case studies; intelligent early warning
(This special issue belongs to the Section F: Engineering and Materials)
Symmetries and Asymmetries in Power Electronics
edited by and Ibrahim AL-Wesabi
submission deadline 30 Nov 2026 | Viewed by 231 | Submission Open
Keywords: power electronics; symmetry; asymmetry; power converters; modulation; harmonic symmetry; unbalanced operation; fault diagnosis; grid-connected converters; renewable energy system
(This special issue belongs to the Section F: Engineering and Materials)
Symmetry in Computational Intelligence
edited by Aijun Liu and
submission deadline 30 Nov 2026 | Viewed by 227 | Submission Open
Keywords: symmetries; computational intelligence; invariant learning; graph neural networks; deep reinforcement learning; representation learning; multi-objective optimization
(This special issue belongs to the Section A: Computer Science)
Symmetry and Asymmetry in Data-Driven Modeling, Optimization, and Engineering Applications
edited by , and
submission deadline 30 Nov 2026 | Viewed by 219 | Submission Open
Keywords: symmetry; asymmetry; machine learning models; artificial intelligence; deep learning; invariant and equivariant learning; symmetry-aware algorithms; asymmetry-aware learning; graph neural networks; physics-informed machine learning; multimodal learning; engineering and geoscience applications
(This special issue belongs to the Section A: Computer Science)
Symmetry in Relativistic Fluid Dynamics
edited by Xin An and
submission deadline 30 Nov 2026 | Viewed by 214 | Submission Open
Keywords: relativistic fluid dynamics; symmetry principle; effective theory; non-equilibrium systems; heavy-ion collisions; neutron star mergers
(This special issue belongs to the Section C: Physics)
Asymmetric Flow in Microfluidics: Cell Manipulation, Micro-Reactions, and Micro-Detection
edited by Haizhen Sun and Jian Qu
submission deadline 30 Nov 2026 | Viewed by 159 | Submission Open
Keywords: asymmetric flow; microfluidics; cell manipulation; micro-reaction; micro-detection; optical fiber sensing; microenvironment sensing; chaotic advection; inertial microfluidics; lab-on-a-chip
(This special issue belongs to the Section F: Engineering and Materials)
Symmetry and Asymmetry in Fiber-Optic and Near-Infrared Sensing Systems
edited by , Adil Mustafa and
submission deadline 15 Dec 2026 | Viewed by 256 | Submission Open
Keywords: symmetry in sensors; fiber optic sensing; near-infrared (NIR) sensing; microwave photonics; sensor performance enhancement; photonic sensing applications
(This special issue belongs to the Section F: Engineering and Materials)
Symmetrical Studies in Optical Materials
edited by and Abdelmajid El Mansouri
submission deadline 30 Dec 2026 | 1 articles | Viewed by 1113 | Submission Open
Keywords: optoelectronic devices; nanomaterials; DFT calculations; experimental characterisation; thin films; renewable energy; conducting polymers; hybrid solar cells; perovskite materials; optical materials
(This special issue belongs to the Section F: Engineering and Materials)
Symmetry and Asymmetry in Power Electronics and Grid Integration submission deadline 30 Dec 2026 | Viewed by 371 | Submission Open
Keywords: symmetrical renewable energy integration; symmetrical harmonic cancellation; symmetrical power converter topologies; balanced grid-forming control; symmetrical control strategies
(This special issue belongs to the Section F: Engineering and Materials)
Simulation and Modelling in Natural Sciences, Biomedicine and Engineering III
edited by
submission deadline 31 Dec 2026 | 15 articles | Viewed by 54683 | Submission Open
(This special issue belongs to the Section B: Mathematics)
Symmetries of Difference Equations, Special Functions and Orthogonal Polynomials: 3rd Edition
edited by
submission deadline 31 Dec 2026 | 18 articles | Viewed by 23827 | 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 B: Mathematics)
Data Driven and Intelligent Aerospace and Robotics Systems submission deadline 31 Dec 2026 | 6 articles | Viewed by 21514 | Submission Open
(This special issue belongs to the Section A: Computer Science)
Nonlinear Science and Numerical Simulation with Symmetry submission deadline 31 Dec 2026 | 6 articles | Viewed by 18455 | Submission Open
Keywords: breathers; collapse; dynamical chaos; integrability; pattern formation; reaction–diffusion systems; rogue waves; shock waves; solitons; stability; topological dynamics; vortices; skyrmions; cardiac dynamics; biological applications
(This special issue belongs to the Section B: Mathematics)
Symmetries and Fractional Differential Equations: Theory and Applications submission deadline 31 Dec 2026 | 10 articles | Viewed by 14778 | Submission Open
Keywords: fractional calculus; fractional differential equations; delay fractional differential equations; PDEs and difference equations; stochastic fractional differential equations; fractional difference equations and applications; low-rank approximations; Krylov subspaces; mathematical modeling in engineering; symmetries; integrability; control theory; numerical methods
(This special issue belongs to the Section B: Mathematics)
Symmetric and Asymmetric Distributions: New Developments and Applications submission deadline 31 Dec 2026 | 6 articles | Viewed by 14520 | Submission Open
Keywords: applications; Bayesian; regression; reliability; simulation; skewness; survival analysis
(This special issue belongs to the Section F: Engineering and Materials)
Applications Based on Symmetry in Cryptography and Information Security
edited by Yanwei Zhou
submission deadline 31 Dec 2026 | 7 articles | Viewed by 9876 | Submission Open
Keywords: cryptographic protocols and secure communication systems; digital signatures and authentication methods; leakage-resilient cryptographic algorithms and their implementations; public-key encryption techniques and their security properties; cryptographic primitives for data integrity and authentication; functional encryption for secure data processing and analysis; security and privacy in cloud computing and big data analytics.
(This special issue belongs to the Section A: Computer Science)
Symmetry in Applied Continuous Mechanics, 2nd Edition submission deadline 31 Dec 2026 | 4 articles | Viewed by 9041 | Submission Open
Keywords: symmetry; skew symmetry; identical parts; automotive engineering; structure; numerical analysis; modal analysis; finite element method (FEM); aerospace engineering; theoretical models; elastic systems; eigenvalue; eigenmode; experimental methods; civil engineering
(This special issue belongs to the Section B: Mathematics)
Symmetry and Asymmetry in Intelligent Control and Computing
edited by Yinyan Zhang, Ameer Tamoor Khan and Mohammed Aquil Mirza
submission deadline 31 Dec 2026 | 7 articles | Viewed by 9006 | Submission Open
Keywords: intelligent control; computing; symmetry; asymmetry; robotics
(This special issue belongs to the Section F: Engineering and Materials)
Lorentz Invariance Violation and Space–Time Symmetry Breaking
edited by and
submission deadline 31 Dec 2026 | 4 articles | Viewed by 8495 | Submission Open
Keywords: Lorentz invariance violation; CPT symmetry violation; spontaneous symmetry breaking; space–time symmetries; quantum gravity; phenomenology of physics beyond the standard model; astroparticle physics and cosmology; test of Einstein's relativity
(This special issue belongs to the Section C: Physics)
Nature and Origin of Dark Matter and Dark Energy, 2nd Edition submission deadline 31 Dec 2026 | 4 articles | Viewed by 8486 | Submission Open
Keywords: dark matter; dark energy; cosmology; galaxies; CMB; universe; expansion; cosmological constant
(This special issue belongs to the Section C: Physics)
Advances in Fluid Dynamics and Energy Systems: Applications of Symmetry and Asymmetry
edited by , and Jesus Alberto Crespo-Quintanilla
submission deadline 31 Dec 2026 | 7 articles | Viewed by 7941 | Submission Open
Keywords: computational fluid dynamics (CFD); modeling of thermal and fluid dynamics; symmetry and asymmetry in thermal and fluid systems; heat and mass transfer; turbulent and laminar flows; multiphase flow analysis; numerical simulation and experimental validation; fluid–structure interaction; second law of thermodynamics and entropy generation; energy efficiency and optimization; renewable energy systems
(This special issue belongs to the Section F: Engineering and Materials)
Symmetry and Its Application in Differential Geometry and Topology, 4th Edition
edited by and Tiehong Zhao
submission deadline 31 Dec 2026 | 9 articles | Viewed by 7290 | 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 B: Mathematics)
The Fusion of Fuzzy Sets and Optimization Using Symmetry
edited by
submission deadline 31 Dec 2026 | 7 articles | Viewed by 7076 | 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 B: Mathematics)
Theory and Applications on the Recent Extensions of Ordinary Fuzzy Sets
edited by
submission deadline 31 Dec 2026 | 5 articles | Viewed by 6019 | Submission Open
Keywords: neutrosophic sets; symmetry/asymmetry; fuzzy sets
(This special issue belongs to the Section F: Engineering and Materials)
Symmetry in Stochastic Models for Machine Learning Applications: Theoretical Insights and Applications
edited by , Renata Avros and Dvora Toledano-Kitai
submission deadline 31 Dec 2026 | 5 articles | Viewed by 5703 | Submission Open
Keywords: symmetry; probability theory; stochastic processes; statistical distributions; pattern recognition; data analysis; clustering; optimization techniques; artificial intelligence; machine learning; deep learning; dynamic systems; symmetry-aware algorithms; symmetry-based optimization; symmetry-preserving transformations; symmetry-induced regularization; statistical modeling
(This special issue belongs to the Section A: Computer Science)
Mathematics: Feature Papers 2026
edited by
submission deadline 31 Dec 2026 | 12 articles | Viewed by 5153 | 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 B: Mathematics)
Quantum Optics and Symmetry
edited by and Aimin Yan
submission deadline 31 Dec 2026 | 4 articles | Viewed by 5144 | Submission Open
Keywords: quantum optics; quantum neural network; quantum optical information processing; quantum symmetry
(This special issue belongs to the Section C: Physics)
Symmetry and Asymmetry in Human-Computer Interaction
edited by , Xinguo Yu and Ting Zhang
submission deadline 31 Dec 2026 | 6 articles | Viewed by 4991 | Submission Open
Keywords: human-computer interaction; symmetric interface design; AI-enhanced interaction systems; adaptive user interfaces; embodied interaction; cognition-aware HCI; natural user interfaces; multimodal interaction; user-centered design; interaction personalization; brain-computer interfaces; robot-mediated interaction; intelligent interactive systems; interaction analytics; engagement-sensitive interfaces; perceptual symmetry; asymmetric design patterns; cross-domain HCI applications
(This special issue belongs to the Section A: Computer Science)
New Trends in Biomimetics for Life-Sciences
edited by , and Aniello Cammarano
submission deadline 31 Dec 2026 | 2 articles | Viewed by 4793 | Submission Open
Keywords: biomimetics; life-sciences; microneedle patches; functional biomaterials; biomedical nanomaterials; bio-inspired sensors; sustainable devices
(This special issue belongs to the Section E: Life Sciences)
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