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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Asymmetrical Problems and Countermeasures in Deep Excavations and Tunnelling Engineering submission deadline 10 Mar 2026 | 1 articles | Viewed by 599 | Submission Open
Keywords: deep excavation; tunnel; geomechanics; underground engineering; rock; soil; asymmetry
Symmetry and Gravitational Waves in Black Hole Physics
edited by Zhan-Feng Mai and Jinbo Yang
submission deadline 15 Mar 2026 | Viewed by 283 | Submission Open
Keywords: black holes; gravitational waves; holographic duality; binary black holes; quasinormal modes; fundamental physics; cosmology
(This special issue belongs to the Section Physics)
Symmetry in Fixed Point Theory and Optimization: Computations and Applications
edited by
submission deadline 20 Mar 2026 | 6 articles | Viewed by 13838 | Submission Open
Keywords: fixed point theory; nonlinear analysis; optimization (vector optimization; linear programming); equilibrium and variational inequality problems; iterative algorithms; fractional calculus; stochastic systems; approximation algorithms; computer science
(This special issue belongs to the Section Mathematics)
Symmetry/Asymmetry in Optimization Algorithms and Systems Control
edited by and Yuanyuan Zhang
submission deadline 30 Mar 2026 | 3 articles | Viewed by 1321 | Submission Open
Keywords: optimization algorithm; systems control; autonomous system; multi-objective decision-making
(This special issue belongs to the Section Computer)
Asymmetric and Symmetric in Deep Computer Vision and Generative Modeling submission deadline 31 Mar 2026 | 6 articles | Viewed by 20579 | Submission Open
Keywords: deep computer vision; generative models and GANs; symmetry and asymmetry in neural networks; feature extraction and representation learning; synthetic data generation; cross-domain applications; data augmentation and transfer learning; model robustness and interpretability
(This special issue belongs to the Section Computer)
Symmetry and Approximation Methods II
edited by
submission deadline 31 Mar 2026 | 5 articles | Viewed by 17436 | Submission Open
(This special issue belongs to the Section Mathematics)
Symmetry and Asymmetry Study in Graph Theory
edited by
submission deadline 31 Mar 2026 | 9 articles | Viewed by 15027 | 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)
Symmetric and Asymmetric Distributions: New Developments and Applications submission deadline 31 Mar 2026 | 6 articles | Viewed by 12712 | Submission Open
Keywords: applications; Bayesian; regression; reliability; simulation; skewness; survival analysis
(This special issue belongs to the Section Engineering and Materials)
Symmetry in the Soliton Theory
edited by , Dianchen Lu, and
submission deadline 31 Mar 2026 | 5 articles | Viewed by 11676 | 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 and Its Application in Wireless Communication
edited by Chengkai Tang and Rugui Yao
submission deadline 31 Mar 2026 | 6 articles | Viewed by 10040 | Submission Open
Keywords: high-speed communication; AI enabled communication; big data processing; MIMO communication; array antennas; array signal processing; smart reflective surface
(This special issue belongs to the Section Computer)
New Power System and Symmetry
edited by , Runjia Sun, and Jin Tan
submission deadline 31 Mar 2026 | 7 articles | Viewed by 9974 | Submission Open
Keywords: power systems; power electronics; symmetry; smart grid; renewable energies; energy storage; artificial intelligence technology; power system stability; signal processing
(This special issue belongs to the Section Engineering and Materials)
Symmetries and Fractional Differential Equations: Theory and Applications submission deadline 31 Mar 2026 | 8 articles | Viewed by 9948 | 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 Mathematics)
Symmetry in Microelectronics and Solid-State Electronics
edited by , Guoqing Xin, , Ying Liu, and
submission deadline 31 Mar 2026 | 1 articles | Viewed by 7357 | Submission Open
Keywords: semiconductors; integrated circuits (ICs); microelectronic devices; transistors; diodes
(This special issue belongs to the Section Engineering and Materials)
Nonlinear Analysis and Applications, Geometry of Banach Spaces and Symmetry II submission deadline 31 Mar 2026 | 5 articles | Viewed by 7267 | 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)
Navigating the Frontiers of 6G Wireless Communication Networks and Beyond
edited by Jamal Belkadid and
submission deadline 31 Mar 2026 | 2 articles | Viewed by 6448 | Submission Open
Keywords: wireless network; mimo system; antenna arrays; visible light communication; non-orthogonal multiple access; multiple input multiple output
(This special issue belongs to the Section Computer)
Symmetry/Asymmetry in Image Processing and Computer Vision Using Embedded Systems
edited by and Santiago Omar Caballero-Morales
submission deadline 31 Mar 2026 | 4 articles | Viewed by 6028 | 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)
Advances in Symmetry/Asymmetry and Biomedical Engineering
edited by and
submission deadline 31 Mar 2026 | 3 articles | Viewed by 5546 | 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)
Graphic Representation and Symmetry Applied to the Technical Historical Heritage submission deadline 31 Mar 2026 | 1 articles | Viewed by 4460 | Submission Open
Keywords: engineering graphics; architectural graphics; symmetry; technical historical heritage; ancient machines; technical drawing; descriptive geometry; computer-aided design; geometric modeling; virtual reality; augmented reality; computer animation
(This special issue belongs to the Section Engineering and Materials)
Nature and Origin of Dark Matter and Dark Energy, 2nd Edition submission deadline 31 Mar 2026 | 3 articles | Viewed by 4443 | Submission Open
Keywords: dark matter; dark energy; cosmology; galaxies; CMB; universe; expansion; cosmological constant
(This special issue belongs to the Section Physics)
Symmetry/Asymmetry and Its Applications in Deep Learning and Artificial Intelligence Methods submission deadline 31 Mar 2026 | 3 articles | Viewed by 4256 | 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 Evolutionary Computation and Machine Learning
edited by and Leilei Cao
submission deadline 31 Mar 2026 | 3 articles | Viewed by 4249 | 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 in Thermal Management
edited by , Dongxing Song and Zhixiong Ding
submission deadline 31 Mar 2026 | 2 articles | Viewed by 3466 | 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)
Asymmetric Problems in Computational Mechanics and Their Engineering Applications
edited by Zhanyou Luo, and Man Huang
submission deadline 31 Mar 2026 | 4 articles | Viewed by 3098 | 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)
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 2586 | Submission Open
Keywords: fractional calculus; machine learning; AI; deep learning; engineering and science applications
(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 2529 | 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)
Chemistry: Symmetry/Asymmetry—Feature Reviews and Papers
edited by
submission deadline 31 Mar 2026 | 3 articles | Viewed by 2299 | 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 and Asymmetry in Quantum Models
edited by Marek Góźdź and Wenxue Cui
submission deadline 31 Mar 2026 | 3 articles | Viewed by 1938 | 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)
Advances in Intelligent Power Electronics with Symmetry/Asymmetry
edited by and Valeri Petrov Gochev
submission deadline 31 Mar 2026 | 2 articles | Viewed by 1848 | Submission Open
Keywords: adaptive algorithms; asymmetry; energy efficiency; loss optimization; intelligent controllers; power circuit topology; power electronic devices and systems; predictive control; real-time diagnostics; symmetry
(This special issue belongs to the Section Engineering and Materials)
Applications of Symmetry/Asymmetry in Structural Dynamics and Structural Health Monitoring
edited by
submission deadline 31 Mar 2026 | 1 articles | Viewed by 1656 | 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 in Security and Theoretical Computer Science submission deadline 31 Mar 2026 | 1 articles | Viewed by 1522 | 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 in Complex Analysis Operators Theory submission deadline 31 Mar 2026 | 2 articles | Viewed by 1260 | 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)
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 1186 | 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 in Artificial Intelligence and Applications
edited by and Xiaopeng Sha
submission deadline 31 Mar 2026 | 2 articles | Viewed by 1181 | 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)
Computer Vision, Robotics, and Automation Engineering
edited by and Jian Cheng
submission deadline 31 Mar 2026 | 3 articles | Viewed by 1165 | Submission Open
Keywords: artificial intelligence; computer vision; robotics; automation; image processing; pattern recognition
(This special issue belongs to the Section Computer)
Symmetry/Asymmetry in Smart Manufacturing submission deadline 31 Mar 2026 | 1 articles | Viewed by 1065 | 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)
Symmetry in Nuclear Physics and Nuclear Astrophysics
edited by Jelena Vesić
submission deadline 31 Mar 2026 | 2 articles | Viewed by 956 | Submission Open
Keywords: nuclear structure; nuclear astrophysics; nuclear models; symmetry violations; nuclear symmetry energy
(This special issue belongs to the Section Physics)
Symmetry Methods and Applications in Quantum Optics and Quantum Information submission deadline 31 Mar 2026 | 1 articles | Viewed by 924 | 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)
Evolutionary Computation, Metaheuristics, Nature-Inspired Algorithms, and Symmetry: 2nd Edition
edited by , Yang Yu and
submission deadline 31 Mar 2026 | 2 articles | Viewed by 909 | 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/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 889 | Submission Open
Keywords: quantum chromodynamics (QCD); elementary particle physics; hadron physics; symmetries; quantum field theory
(This special issue belongs to the Section Physics)
Cosmoparticle Physics—Dedicated to Ya. B. Zeldovich's 110 Anniversary
edited by
submission deadline 31 Mar 2026 | Viewed by 842 | Submission Open
Keywords: cosmology; particle physics; astroparticle physics; cosmoparticle physics; BSM models; dark matter; inflation; baryosynthesis; primordial black holes; cosmological structures; cosmological phase transitions and topological defects; supergravity; modified gravity
(This special issue belongs to the Section Physics)
Symmetry/Asymmetry in Sustainable Processes: Waste Valorization and Green Engineering Approaches submission deadline 31 Mar 2026 | 1 articles | Viewed by 744 | 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, Topology and Geometry in Physics
edited by Gabino Estevez-Delgado
submission deadline 31 Mar 2026 | 1 articles | Viewed by 697 | Submission Open
Keywords: symmetric phenomena; patterns; symmetric models; varieties; stability of phenomena; differential topology
(This special issue belongs to the Section Physics)
Symmetry/Asymmetry and Autonomous Robotics submission deadline 31 Mar 2026 | 1 articles | Viewed by 551 | Submission Open
Keywords: mobile robot; trajectory prediction; navigation; control system; sensing
(This special issue belongs to the Section Computer)
Symmetry in Numerical Solutions
edited by
submission deadline 31 Mar 2026 | 1 articles | Viewed by 529 | Submission Open
Keywords: conservation; geometric integration; symplectic; invariants; discretization; structure preserving; stability; Hamiltonian; time-reversibility; long-term simulation
(This special issue belongs to the Section Mathematics)
Symmetry Studies in Metals & Alloys
edited by André Barros, Noé Cheung and Felipe Bertelli
submission deadline 31 Mar 2026 | 1 articles | Viewed by 479 | Submission Open
Keywords: crystallography; microstructure; mechanical properties; deformation; diffusion
(This special issue belongs to the Section Engineering and Materials)
Symmetry Applied in Renewable Energy submission deadline 31 Mar 2026 | Viewed by 477 | 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 458 | 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)
Perturbative and Nonperturbative Aspects of Quantum Chromodynamics (QCD)
edited by and Jesus Javier Cobos-Martinez
submission deadline 31 Mar 2026 | Viewed by 435 | 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)
Partial Differential Equations and Symmetry
edited by and
submission deadline 31 Mar 2026 | 1 articles | Viewed by 433 | 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 Algebraic Topology, Homological Algebra and Group Theory
edited by and
submission deadline 31 Mar 2026 | Viewed by 408 | 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)
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