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/Asymmetry in Image Processing and Computer Vision Using Embedded Systems
edited by and Santiago Omar Caballero-Morales
submission deadline 31 Mar 2026 | 3 articles | Viewed by 3107 | Submission Open
Keywords: image processing; computer vision; embedded systems; object recognition; image segmentation; feature extraction; dynamic environments; hardware integration; real-time applications; machine learning
(This special issue belongs to the Section Computer)
Symmetry/Asymmetry in Evolutionary Computation and Machine Learning
edited by and Leilei Cao
submission deadline 31 Mar 2026 | 3 articles | Viewed by 2827 | Submission Open
Keywords: evolutionary computation; machine learning; swarm intelligence; bio-inspired optimization; pattern classification and clustering analysis; symmetry in evolutionary single-objective and multi-objective optimization; symmetry in regularization techniques; symmetry in data augmentation; symmetry in neural networks and deep learning; symmetry and asymmetric similarity measures
(This special issue belongs to the Section Computer)
Symmetry/Asymmetry and Its Applications in Deep Learning and Artificial Intelligence Methods submission deadline 31 Mar 2026 | 3 articles | Viewed by 2727 | Submission Open
Keywords: deep learning; multimedia; generative adversarial network; pattern recognition; intelligent human– computer interaction; convolutional neural networks; recurrent neural networks; graph neural network; long short-term memory; extreme learning machine; generative adversarial networks; reinforcement learning; clustering analysis; natural language processing; time series analysis; model-based clustering high-dimensional modeling
(This special issue belongs to the Section Computer)
Symmetry/Asymmetry in Thermal Management
edited by , Dongxing Song and Zhixiong Ding
submission deadline 31 Mar 2026 | 2 articles | Viewed by 2526 | Submission Open
Keywords: thermal management; heat dissipation; passive cooling; active cooling; advanced materials; thermal interface materials; fluid dynamics; thermodynamics; symmetric/asymmetric design
(This special issue belongs to the Section Engineering and Materials)
Spin Chirality and Molecular Magnetism
edited by Guangchen Li and
submission deadline 31 Mar 2026 | 1 articles | Viewed by 2125 | 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)
Asymmetric Problems in Computational Mechanics and Their Engineering Applications
edited by Zhanyou Luo, and Man Huang
submission deadline 31 Mar 2026 | 3 articles | Viewed by 1767 | Submission Open
Keywords: asymmetric material behaviors; multiphysics coupling; asymmetric boundary conditions; AI algorithms and applications; asymmetry in tunnel engineering; asymmetry in slope stability; asymmetry in foundation pit engineering; structural safety; laboratory testing; numerical simulation
(This special issue belongs to the Section Engineering and Materials)
Symmetry in Security and Theoretical Computer Science submission deadline 31 Mar 2026 | 1 articles | Viewed by 1058 | Submission Open
Keywords: post-quantum cryptography; theoretical computer science; cyber security; efficient implementations of cryptographic schemes; formal analysis; malware analysis
(This special issue belongs to the Section Computer)
Symmetry and Asymmetry in Quantum Models
edited by Marek Góźdź and Wenxue Cui
submission deadline 31 Mar 2026 | 1 articles | Viewed by 1036 | Submission Open
Keywords: gauge field theory; symmetry breaking; nuclear symmetry; phase transition; entanglement; conservation law; quantum evolution; quantum information
(This special issue belongs to the Section Physics)
Applications of Symmetry/Asymmetry in Structural Dynamics and Structural Health Monitoring
edited by
submission deadline 31 Mar 2026 | Viewed by 940 | 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)
Symmetry, Asymmetry, and Anisotropy in the Design and Modeling of Advanced Materials submission deadline 31 Mar 2026 | Viewed by 886 | Submission Open
Keywords: symmetry-driven design; anisotropic materials; multiscale modeling; structural optimization; advanced manufacturing
(This special issue belongs to the Section Engineering and Materials)
Innovations in Passive and Active Microwave Circuits for Advanced Communication and Sensing Systems: Exploiting Symmetry for Enhanced Performance submission deadline 31 Mar 2026 | 1 articles | Viewed by 840 | Submission Open
Keywords: passive microwave components; active microwave devices; microwave circuit design; power amplifiers; oscillators; mixers; terahertz (THz) technology; 5G and 6G networks; multi-band circuits; reconfigurable circuits; high-frequency communication; ultra-high-speed systems; radar systems; filters and couplers; antenna design; circuit simulation tools; optimization techniques; advanced sensing applications; wireless communication technologies
(This special issue belongs to the Section Engineering and Materials)
Symmetry/Asymmetry in Intelligent Control System submission deadline 31 Mar 2026 | 1 articles | Viewed by 833 | Submission Open
Keywords: symmetry in control systems; asymmetric control design; intelligent control; adaptive control; nonlinear systems; robust control; learning-based control; observer design; fault-tolerant control; autonomous systems
(This special issue belongs to the Section Computer)
Latest Advancements in Symmetry and Asymmetry in Robotics and Mechatronics: Highlighting Emerging Trends and Their Intersections with Artificial Intelligence (AI), Machine Learning, Nonlinear Systems, and Control
edited by , , and Jeferson José de Lima
submission deadline 31 Mar 2026 | 1 articles | Viewed by 769 | Submission Open
Keywords: fractional calculus; machine learning; AI; deep learning; engineering and science applications
(This special issue belongs to the Section Engineering and Materials)
Symmetry/Asymmetry in Quantum Chromodynamics (QCD)
edited by Joao Pacheco B.C. de Melo and George H.S. Yabusaki
submission deadline 31 Mar 2026 | Viewed by 673 | Submission Open
Keywords: quantum chromodynamics (QCD); elementary particle physics; hadron physics; symmetries; quantum field theory
(This special issue belongs to the Section Physics)
Symmetry in Complex Analysis Operators Theory submission deadline 31 Mar 2026 | 2 articles | Viewed by 568 | Submission Open
Keywords: analytic function; univalent function; harmonic function; differential subordination; differential superordination; strong differential subordination; strong differential superordination; fuzzy differential subordination; fuzzy differential superordination; differential operator; integral operator; differential– integral operator; linear operator
(This special issue belongs to the Section Mathematics)
Symmetry in Nuclear Physics and Nuclear Astrophysics
edited by Jelena Vesić
submission deadline 31 Mar 2026 | Viewed by 441 | Submission Open
Keywords: nuclear structure; nuclear astrophysics; nuclear models; symmetry violations; nuclear symmetry energy
(This special issue belongs to the Section Physics)
Chemistry: Symmetry/Asymmetry—Feature Reviews and Papers
edited by
submission deadline 31 Mar 2026 | 1 articles | Viewed by 439 | Submission Open
Keywords: chirality; enantiomers; diastereomers; molecular symmetry; plane of symmetry; asymmetric carbon; optically active compounds; stereocenter; homochirality; symmetry elements; mirror plane; molecular chirality; asymmetric synthesis; optical resolution; X-ray crystallography; X-ray structures; crystal structures; homochirality in chemistry and biochemistry; symmetry and spectroscopy; symmetry and isomerism; homochirality in the origin of life; chirogenesis; stereoselective synthesis; chiral ligands
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Symmetry/Asymmetry and Autonomous Robotics submission deadline 31 Mar 2026 | Viewed by 407 | Submission Open
Keywords: mobile robot; trajectory prediction; navigation; control system; sensing
(This special issue belongs to the Section Computer)
Symmetry Applied in Renewable Energy submission deadline 31 Mar 2026 | Viewed by 373 | Submission Open
Keywords: symmetry; renewable energy; photovoltaics; MPPT; energy efficiency; materials science; sustainable energy systems; optimization; modeling and simulation
(This special issue belongs to the Section Engineering and Materials)
Symmetry and Stochasticity in Mathematical Biology and Ecology
edited by and Ling Zhong
submission deadline 31 Mar 2026 | Viewed by 372 | 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/Asymmetry in Smart Manufacturing submission deadline 31 Mar 2026 | Viewed by 273 | Submission Open
Keywords: smart factory and smart manufacturing; Industry 4.0 technologies; intelligent process planning; condition monitoring; smart maintenance; lean manufacturing; optimization algorithms; digital twin; cloud manufacturing; machine learning and deep learning
(This special issue belongs to the Section Engineering and Materials)
Perturbative and Nonperturbative Aspects of Quantum Chromodynamics (QCD)
edited by and Jesus Javier Cobos-Martinez
submission deadline 31 Mar 2026 | Viewed by 263 | Submission Open
Keywords: quantum Chromodynamics; nonperturbative QCD; perturbative QCD; QCD confinement; spontaneous chiral symmetry breaking; collider physics; jets and showers in collider; gluon saturation; QCD in nuclear medium; beyond standard model of QCD; quark-gluon plasma
(This special issue belongs to the Section Physics)
Symmetry in Computational Intelligence and Data Science
edited by and Jialiang Xie
submission deadline 31 Mar 2026 | Viewed by 242 | Submission Open
Keywords: foundational theories; large language models; artificial general intelligence (AGI); explainable AI (XAI); natural language processing (NLP); machine learning; big data structures; uncertainty theories
(This special issue belongs to the Section Computer)
Symmetry in Contemporary Cryptography
edited by Fuyou Miao
submission deadline 31 Mar 2026 | Viewed by 234 | Submission Open
Keywords: basic number theory; finite domain foundation; the relationship between common mathematical problems; various cryptography technologies
(This special issue belongs to the Section Computer)
Symmetry and Asymmetry Studies in Digital Signals Processing
edited by , and Han Hai
submission deadline 31 Mar 2026 | Viewed by 179 | Submission Open
Keywords: communications; matrix and orthogonal signal processing; coding and detection; intelligent signal processing; biomedical signal processing; machine learning
(This special issue belongs to the Section Computer)
Symmetry/Asymmetry in Polymer Composite submission deadline 31 Mar 2026 | Viewed by 178 | Submission Open
Keywords: advanced and green polymer composite; biomass; advanced additives; new concept composite; composite manufacturing
(This special issue belongs to the Section Engineering and Materials)
Symmetry/Asymmetry in Sustainable Processes: Waste Valorization and Green Engineering Approaches submission deadline 31 Mar 2026 | Viewed by 178 | Submission Open
Keywords: waste valorization; circular economy; catalysis separation processes; catalyst/sorbent characterisation; green engineering; symmetry/asymmetry; X-ray structures
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Symmetry and Artificial Intelligence in RF Power Amplifiers: Emerging Trends and Techniques submission deadline 31 Mar 2026 | Viewed by 173 | Submission Open
Keywords: power amplifier; RF/microwave; mm-wave; artificial intelligence; symmetry; MMIC
(This special issue belongs to the Section Engineering and Materials)
Symmetry in Signal Processing
edited by Said Ziani
submission deadline 31 Mar 2026 | Viewed by 173 | Submission Open
Keywords: symmetry in signal processing; transform methods (fourier; wavelet; ICA; PCA); biomedical signal analysis (ECG; EEG); symmetry-based deep learning; feature extraction and pattern recognition; image and audio denoising; symmetric optimization algorithms; invariant representations; time-series forecasting; signal compression
(This special issue belongs to the Section Computer)
Symmetry in Computational Fluid Dynamics (CFD) submission deadline 31 Mar 2026 | Viewed by 164 | Submission Open
Keywords: symmetry in fluid dynamics; computational fluid dynamics (CFD); symmetry-based algorithms; turbulence modeling; aerodynamics and hydrodynamics; renewable energy systems; multiphase flows; symmetry in environmental flows; efficient CFD simulations
(This special issue belongs to the Section Engineering and Materials)
Symmetry and Control Systems submission deadline 31 Mar 2026 | Viewed by 159 | Submission Open
Keywords: symmetry in control theory; asymmetry in dynamic modeling; cyber– physical and embedded systems; intelligent process automation; mathematical modeling with symmetry; robotic and mechatronic systems; learning-based control; structural optimization; nonlinear and multivariable control
(This special issue belongs to the Section Engineering and Materials)
Symmetry Studies in Metals & Alloys
edited by André Barros, Noé Cheung and Felipe Bertelli
submission deadline 31 Mar 2026 | Viewed by 157 | Submission Open
Keywords: crystallography; microstructure; mechanical properties; deformation; diffusion
(This special issue belongs to the Section Engineering and Materials)
Symmetry, Topology and Geometry in Physics
edited by Gabino Estevez-Delgado
submission deadline 31 Mar 2026 | Viewed by 149 | Submission Open
Keywords: symmetric phenomena; patterns; symmetric models; varieties; stability of phenomena; differential topology
(This special issue belongs to the Section Physics)
Symmetry and Asymmetry in Computer Vision and Pattern Recognition
edited by Li Yuan
submission deadline 31 Mar 2026 | Viewed by 145 | Submission Open
Keywords: symmetry; asymmetry; computer vision; deep learning; pattern recognition; spectral analysis; quality detection; anomaly detection; structural modeling; multimodal fusion
(This special issue belongs to the Section Computer)
Symmetry and Asymmetry in Theoretical Chemistry
edited by Amin Bakhshandeh, and Emerson Gustavo de Souza Luna
submission deadline 31 Mar 2026 | Viewed by 145 | Submission Open
Keywords: band structure; molecular geometry; theoretical study of spectroscopy; reaction mechanism; catalysts
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Symmetry and Additive Manufacturing: Applications in Mechanical Engineering submission deadline 31 Mar 2026 | Viewed by 145 | Submission Open
Keywords: 3D printing; additive manufacturing; simulation; internet of things; machine learning; dimensional control; computer vision; symmetry phenomenon and theory; metals
(This special issue belongs to the Section Engineering and Materials)
Symmetry in Algebraic Topology, Homological Algebra and Group Theory
edited by and
submission deadline 31 Mar 2026 | Viewed by 143 | Submission Open
Keywords: symmetry; algebraic topology; homological algebra; group theory; cohomology; topological invariants; group representations; derived categories; algebraic structures; mathematical physics
(This special issue belongs to the Section Mathematics)
QCD Matter and Symmetry: Phases, Transitions and Extreme Conditions
edited by and German Lugones
submission deadline 31 Mar 2026 | Viewed by 139 | Submission Open
Keywords: non-Perturbative QCD and effective models; QCD phase diagram; isospin asymmetry/symmetry; chiral symmetry restoration; deconfinement; inhomogeneous phases; magnetized quark matter; anomalous magnetic moment; finite systems; color superconductivity; compact stars: hybrid stars– strange stars; neutron star mergers– cooling-oscillations; dark matter/energy
(This special issue belongs to the Section Physics)
Applications Based on Symmetry in Nanomaterials
edited by
submission deadline 31 Mar 2026 | Viewed by 132 | Submission Open
Keywords: symmetry; nanomaterials; nanostructures; crystallographic symmetry; functional nanomaterials; metamaterials; energy materials; magnetic nanomaterials; optoelectronic properties; structure– property relationships
(This special issue belongs to the Section Engineering and Materials)
Symmetry in Evolutionary Algorithms
edited by
submission deadline 31 Mar 2026 | Viewed by 128 | Submission Open
Keywords: symmetric properties of solution spaces in evolutionary optimization; theoretical analysis of evolutionary algorithm convergence; novel operator designs for evolutionary optimization; multi-objective evolutionary algorithms; evolutionary algorithms for constrained optimization; dynamic and adaptive evolutionary algorithms; hybrid evolutionary algorithms with other computational paradigms; evolutionary algorithms in engineering design and manufacturing; evolutionary approaches to scheduling and resource allocation; evolutionary algorithms for data mining and machine learning; real-world applications of evolutionary algorithms in industry and science
(This special issue belongs to the Section Computer)
Partial Differential Equations and Symmetry
edited by and
submission deadline 31 Mar 2026 | Viewed by 124 | Submission Open
Keywords: partial differential equations; analytical method and numerical algorithm; symmetry analysis; inverse scattering transform; finite difference method; Riemann– Hilbert method; function expansion method; integral transformation method; physics-informed neural method
(This special issue belongs to the Section Mathematics)
Symmetry in Nuclear and Particle Astrophysics
edited by
submission deadline 31 Mar 2026 | Viewed by 120 | Submission Open
Keywords: astrophysics; astroparticle physics; nuclear astrophysics; dark matter; dark energy; black hole physics; cosmology
(This special issue belongs to the Section Physics)
Symmetry in Crystals and Their Magnetic Properties submission deadline 31 Mar 2026 | Viewed by 117 | Submission Open
Keywords: X-ray crystallography; crystal structures; single-crystal X-ray diffraction; powder X-ray diffraction; magnetic materials; magnetic ordering; magnetism
(This special issue belongs to the Section Engineering and Materials)
Symmetry in Clean Energy Systems: Recent Developments and Future Directions Towards AI submission deadline 31 Mar 2026 | Viewed by 116 | Submission Open
Keywords: load profile analysis; RES design; and simulation; hybrid RES with electrical/thermal energy storage system; uninterrupted power flow and grid stability through a smart microgrid; harmonic distortion control and management; active and reactive power management; anomaly and fault detection using ML and DL; energy demand and generation power forecasting; RES health monitoring and predictive maintenance; real-time data-sourced supervised learning models for grid stability; AI-driven decision making and deployment of robots for fault attendance; economic and environmental analysis
(This special issue belongs to the Section Engineering and Materials)
Symmetry in Composite Engineering
edited by
submission deadline 31 Mar 2026 | Viewed by 114 | Submission Open
Keywords: symmetry; composite materials; material symmetry; 2D- and 3D-printed micro-nanostructures; biodegradable composite materials; high-frequency microwave measurements; dielectrics; microwave absorption; electromagnetic shielding; composite architecture
(This special issue belongs to the Section Engineering and Materials)
Asymmetry and Symmetry in Computer Vision and Pattern Recognition
edited by Zaidao Wen
submission deadline 31 Mar 2026 | Viewed by 110 | Submission Open
Keywords: asymmetry; symmetry; computer vision; pattern recognition; object recognition; scene understanding; image segmentation; deep learning; algorithm development; real-world applications
(This special issue belongs to the Section Computer)
Symmetry in Computational Fluid Dynamics: Numerical Methods, Theory and Applications
edited by Xiaoliang He
submission deadline 31 Mar 2026 | Viewed by 103 | Submission Open
Keywords: symmetry-preserving schemes; computational fluid dynamics; numerical modeling; group theory in fluid dynamics; multiphase and turbulent flows; mesh symmetry; model reduction; application of symmetry in engineering
(This special issue belongs to the Section Mathematics)
Symmetry in Artificial Intelligence and Applications
edited by and Xiaopeng Sha
submission deadline 31 Mar 2026 | Viewed by 84 | Submission Open
Keywords: artificial intelligence (AI); deep learning; machine learning (ML); information processing; image processing; neural networks; symmetric networks/asymmetric networks; pattern recognition; signal processing; speech processing; natural language processing; robotics; object detection
(This special issue belongs to the Section Computer)
Evolutionary Computation, Metaheuristics, Nature-Inspired Algorithms, and Symmetry: 2nd Edition
edited by , Yang Yu and
submission deadline 31 Mar 2026 | Viewed by 76 | Submission Open
Keywords: evolutionary computation; metaheuristics; nature-inspired algorithms; single-objective optimization; multi-objective optimization; real-world engineering application; intelligent systems; artificial Intelligence
(This special issue belongs to the Section Computer)
Symmetry Methods and Applications in Quantum Optics and Quantum Information submission deadline 31 Mar 2026 | Viewed by 49 | 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 Physics)
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