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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Advances on Engineering Graphics: Improvements and New Proposals, Volume 2 submission deadline 23 Apr 2025 | 5 articles | Viewed by 15178
(This special issue belongs to the Section Computer)
Relativistic Hydrodynamics and Symmetry: Theory, Methods and Applications
edited by
submission deadline 30 Apr 2025 | 7 articles | Viewed by 26693 | Submission Open
Keywords: Symmetry; Heavy Ion Collisions; Neutron Stars; Hydrodynamics; General Relativity; Gravitational waves
(This special issue belongs to the Section Physics)
Fundamental Aspects of Theoretical Physics - Memorial Issue for Prof. Dr. Weinberg submission deadline 30 Apr 2025 | 8 articles | Viewed by 17887 | Submission Open
(This special issue belongs to the Section Physics)
Symmetry in Statistical Mechanics and Complex Dynamical Systems submission deadline 30 Apr 2025 | 7 articles | Viewed by 11248 | Submission Open
Keywords: cellular automata; coupled map lattices; nonlinear partial differential equations; entropy; partition function; complexity; nonlinear oscillators; exactly solved models; computer simulations
(This special issue belongs to the Section Physics)
Selected Papers Symmetry 2023—The Fourth Edition of the International Conference on Symmetry submission deadline 30 Apr 2025 | 7 articles | Viewed by 11042 | Submission Open
Symmetry in Classical and Quantum Gravity and Field Theory
edited by
submission deadline 30 Apr 2025 | 5 articles | Viewed by 10490 | Submission Open
Keywords: classical and quantum gravity; quantum field theory; symmetry and group theory; classical and quantum cosmology; classical and quantum black holes lie groups; diffeomorphisms; constrained and gauge systems; path integral and BRST quantization
(This special issue belongs to the Section Physics)
Applications Based on AI in Mathematics and Asymmetry/Symmetry
edited by
submission deadline 30 Apr 2025 | 6 articles | Viewed by 9613 | Submission Open
Keywords: AI algorithms; symmetry; asymmetry; formal method; global optimization; extremal configuration
(This special issue belongs to the Section Mathematics)
Recent Advances in Symmetries Methods and Other Approaches to Nonlinear Differential Equations submission deadline 30 Apr 2025 | 6 articles | Viewed by 9552 | Submission Open
Keywords: nonlinear differential equations; Lie symmetry method; closed-form solutions; conservation laws; mathematical physics; analytical solution methods
(This special issue belongs to the Section Mathematics)
Symmetry in Combinatorics and Discrete Mathematics
edited by
submission deadline 30 Apr 2025 | 8 articles | Viewed by 9079 | 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)
Global and Local Scale Symmetry in Gravitation and Cosmology
edited by
submission deadline 30 Apr 2025 | 3 articles | Viewed by 8943 | Submission Open
Keywords: Global Scale Invariance; Local Scale Invariance; Weyl Invariance; Inflation; 5th Force Problem in Late Time Cosmology; Flat Potentials
(This special issue belongs to the Section Physics)
Symmetry in Metric Spaces and Topology submission deadline 30 Apr 2025 | 6 articles | Viewed by 7201 | Submission Open
Keywords: various metric spaces; convergency and completeness of different metric spaces; metric spaces and symmetric and asymmetric properties; different distances and characterizations of various metric spaces; geometric analysis of metric spaces regarding ODEs and PDEs; various abstract metric spaces using Banach algebra and C*-algebra; topologically fixed point theories; symmetries; and asymmetries; applications of fixed point theory regarding spaces; metric-based and distance concepts and combinatorics (and the emphasis on graphs); various metric spaces and fuzzy analysis; various metric spaces as new tools for artificial intelligence
(This special issue belongs to the Section Mathematics)
Discrete and Continuous Memristive Nonlinear Systems and Symmetry II
edited by , and
submission deadline 30 Apr 2025 | 3 articles | Viewed by 6122 | 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)
Integral Transformation, Operational Calculus and Their Applications III submission deadline 30 Apr 2025 | 3 articles | Viewed by 5364 | Submission Open
Keywords: integral transformations and integral equations as well as other related operators including their symmetry properties and characteristics; applications involving mathematical (or higher transcendental) functions including their symmetry properties and characteristics; applications involving fractional-order differential and differintegral equations and their associated symmetry; applications involving symmetrical aspect of geometric function theory of complex analysis; applications involving q-series and q-polynomials and their associated symmetry; applications involving special functions of mathematical physics and applied mathematics and their symmetrical aspect; applications involving analytic number theory and symmetry
(This special issue belongs to the Section Mathematics)
Symmetry in Methods of Numerical Analysis and Its Application in Engineering submission deadline 30 Apr 2025 | 3 articles | Viewed by 4830 | Submission Open
Keywords: numerical methods; difference equations; differential equations; applications
(This special issue belongs to the Section Mathematics)
Symmetry in Fuzzy Relation Equations submission deadline 30 Apr 2025 | 2 articles | Viewed by 4814 | Submission Open
Keywords: fuzzy relations; fuzzy equations; fuzzy similarity; fuzzy equivalence; fuzzy systems
(This special issue belongs to the Section Mathematics)
Symmetry in Combinatorial Structures
edited by Jürgen Bokowski and Isabel Hubard
submission deadline 30 Apr 2025 | 5 articles | Viewed by 4525 | Submission Open
Keywords: combinatorial and geometrical automorphisms of surfaces; sphere systems and manifolds; graph theory; embeddings; surfaces and manifolds; discrete geometry; symmetry groups; geometric polyhedra; regular maps
(This special issue belongs to the Section Mathematics)
Shortcuts to Adiabaticity with and without PT Symmetry Systems: Theory, Experiments and Applications
edited by and
submission deadline 30 Apr 2025 | 2 articles | Viewed by 3655 | Submission Open
Keywords: shortcuts to adiabaticity; quantum open systems; quantum optics; population transfer; non-Hermitian  systems; pseudo-Hermitian  systems; PT  symmetry systems; without  PT symmetry systems; Lewis– Riesenfeld  in variants; non-rotating-wave couplings; non-Markovian effects; adiabaticity condition the adiabatic theorem; energy cost of shortcuts to adiabaticity; master equation
(This special issue belongs to the Section Physics)
Model-Driven, Data-Driven and Symmetry Methods in Hyperspectral Image Processing
edited by Yong Chen and Yu-Bang Zheng
submission deadline 30 Apr 2025 | 2 articles | Viewed by 2754 | Submission Open
Keywords: remote sensing; multispectral/hyperspectral image processing; restoration; reconstruction; and fusion; saliency detection and anomaly detection; application in remote sensing; optimization modeling; machine learning and deep learning; symmetry
(This special issue belongs to the Section Computer)
Quantum Darwinism, Decoherence, and the Randomness of Quantum Jump: Fundamentals and Applications
edited by
submission deadline 30 Apr 2025 | 1 articles | Viewed by 2361 | Submission Open
Keywords: quantum Darwinism; symmetries; quantum information; classical information; fundamentals of quantum mechanics; decoherence; quantum jumps; quantum open systems
(This special issue belongs to the Section Physics)
Advances in Optical and Electrical Integrated Circuits with Symmetry/Asymmetry
edited by
submission deadline 30 Apr 2025 | 1 articles | Viewed by 2281 | Submission Open
(This special issue belongs to the Section Physics)
High Energy Physics and Symmetries
edited by
submission deadline 30 Apr 2025 | 1 articles | Viewed by 2025 | Submission Open
Keywords: gauge symmetries; space time symmetries; conservation laws; local or global symmetry breaking
(This special issue belongs to the Section Physics)
Symmetry and Metaheuristic Algorithms
edited by Erik V. Cuevas
submission deadline 30 Apr 2025 | 1 articles | Viewed by 1888 | Submission Open
Keywords: symmetry-based optimization; the improvement in traditional metaheuristic algorithms (pso; sa; de; etc.) using new mechanisms; new metaheuristic algorithms; hybridization of metaheuristic methods; multi-objective optimization; theoretical insights into metaheuristic algorithms; metaheuristics in artificial intelligence and machine learning; metaheuristics for image processing; metaheuristic applications in healthcare and biomedical engineering; emerging trends and future directions in metaheuristic research
(This special issue belongs to the Section Computer)
Symmetry in Cyber Security and Privacy submission deadline 30 Apr 2025 | 1 articles | Viewed by 1834 | Submission Open
Keywords: computer security; intrusion detection; Internet of Things; machine learning; deep learning
(This special issue belongs to the Section Computer)
Recent Advances in Mathematical Aspect in Engineering—Second Edition
edited by , , , Zhiping Zhang and
submission deadline 30 Apr 2025 | 1 articles | Viewed by 1668 | Submission Open
Keywords: fluid mechanics; optimization; energy; heat transfer; steady and unsteady flow problems; porosity; nanofluids; particle shape effects; multiphase flow; thermodynamics; magnetohydrodynamics; electromagnetic; physiological fluid phenomena  in biological systems; peristaltic; blood flow; symmetry
(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 30 Apr 2025 | 1 articles | Viewed by 1380 | 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 in Three-Phase Electrical Power Systems
edited by Jun Xie and Jianqiao Ma
submission deadline 30 Apr 2025 | 1 articles | Viewed by 1132 | Submission Open
Keywords: new topology and geometry design; in-depth physical/chemical process study; novel modelling and computing theories and methods; design of new experiment and test result analysis; system/component/material research
(This special issue belongs to the Section Engineering and Materials)
Studies of Optoelectronics in Symmetry
edited by Jin-Kun Guo, and Yan Kang
submission deadline 30 Apr 2025 | 2 articles | Viewed by 740 | Submission Open
Keywords: optoelectronics; light-matter interaction; optical field control; nonlinear optics; photonics; electro-optical effects; quantum sensing; quantum imaging; photodetectors; laser
(This special issue belongs to the Section Engineering and Materials)
Symmetry in Complex System and Network Science
edited by Weigang Sun
submission deadline 30 Apr 2025 | Viewed by 636 | Submission Open
Keywords: network science; symmetry and asymmetry metrics; spectral graph theory; laplacian eigenvalues of graphs; synchronization and consensus of coupled systems; optimization algorithms; kirchhoff index; spanning trees
(This special issue belongs to the Section Computer)
Symmetry: Mathematical Applications (Fuzzy Systems, Artificial Intelligence, and Neuro-Fuzzy) in Energy and Agricultural Systems
edited by , Marcelo Campos and
submission deadline 30 Apr 2025 | Viewed by 552 | Submission Open
Keywords: fuzzy systems; artificial intelligence; neuro-fuzzy; applied mathematics; collaborative computing; machine learning; electrical power systems; agricultural systems
(This special issue belongs to the Section Mathematics)
Navigating New Horizons: Symmetry and Advances in the Integration and Active Support of Large-Scale Renewable Energy
edited by , Sizhe Chen, Li Liu and
submission deadline 30 Apr 2025 | 1 articles | Viewed by 462 | Submission Open
Keywords: renewable energy; integration; power electronics; wind; PV; power flow optimization; power market
(This special issue belongs to the Section Engineering and Materials)
Advance Studies in Catalysis with Symmetry/Asymmetry
edited by Cheng Li, Hongkui Zheng, Xinran Li and Wei Huang
submission deadline 30 Apr 2025 | Viewed by 442 | Submission Open
Keywords: symmetric and asymmetric catalysts; catalyst characterization; surface and interface catalysis
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Symmetry and Asymmetry in Network Control
edited by Yadong Xu, and
submission deadline 30 Apr 2025 | Viewed by 424 | Submission Open
Keywords: symmetrical and asymmetrical network control; pattern recognition; neural network; complex network analysis; network security; big data processing; fault diagnosis; anomaly detection; cloud computing; non-linear dynamic systems; control algorithm
(This special issue belongs to the Section Computer)
Fed-Vision for Symmetrical Modelling in Smart Healthcare Systems
edited by Manisha Guduri, Martin Margala and Chinmay Chakraborty
submission deadline 30 Apr 2025 | Viewed by 391 | Submission Open
Keywords: artificial intelligence; deep learning for biomedical applications; generative adversarial networks; symmetry in medical images; symmetry in medical devices; federated learning
(This special issue belongs to the Section Computer)
Applications of Graph Theory in Network Security and Reliability
edited by
submission deadline 30 Apr 2025 | Viewed by 391 | Submission Open
Keywords: symmetry; graph theory; network security; data reliability
(This special issue belongs to the Section Computer)
Symmetry and Asymmetry in Nucleon and Quark Matter
edited by and
submission deadline 30 Apr 2025 | Viewed by 295 | Submission Open
Keywords: quantum chromodynamics; hadronic spectroscopy; exotic hadrons; hadronic molecules; tetraquark states; pentaquark states; chiral symmetry
(This special issue belongs to the Section Physics)
Neutrino Physics and Symmetries
edited by Eduardo Bauer, and Jiajie Ling
submission deadline 30 Apr 2025 | Viewed by 281 | Submission Open
Keywords: lepton number symmetry; CP symmetry violation; see-saw model; scale-invariant models; supersymmetric models; radiative mechanisms (Zee and Ma models); minimal flavor violation (MFV) models; sterile neutrinos; double-beta decay; neutrino detectors
(This special issue belongs to the Section Physics)
Dynamic Systems and Mechanics—2nd Edition submission deadline 30 Apr 2025 | Viewed by 252 | Submission Open
Keywords: dynamic systems; dynamic machines and equipment; viscous– elastic connections; effects of vibrations on buildings; linear/nonlinear models; symmetries/asymmetries with significant effects on dynamic behavior; defects and structural degradation due to dynamic actions; operating mode optimization for dynamic equipment with technological vibrations; models for calculating base isolation; base insolation systems
Symmetry/Asymmetry in Micro/Nanofluidic Devices and Applications
edited by Haizhen Sun, and
submission deadline 30 Apr 2025 | Viewed by 251 | Submission Open
Keywords: lab on a chip; micromixer; microreactor; micro/nano sensor; micro/nano fabrication; droplet manipulation; heat transfer; drug delivery; single-cell analysis; micro/nano robotics
(This special issue belongs to the Section Engineering and Materials)
Symmetry/Asymmetry in Structural Dynamics and Structural Health Monitoring
edited by Xiao-Mei Yang, Xiao-Jun Yao and
submission deadline 30 Apr 2025 | Viewed by 250 | Submission Open
Keywords: structural health monitoring; dynamics; digital twin; performance evaluation; damage diagnosis
(This special issue belongs to the Section Computer)
Symmetry in Photonics and Plasmonics and Their Applications
edited by Renming Liu and Yanmin Kuang
submission deadline 30 Apr 2025 | Viewed by 244 | Submission Open
Keywords: light-matter interaction; surface plasmons; strong plasmon-exciton coupling; exciton polaritons; SHG; BIC; Raman/SERS; nonlinear plasmonics; quantum plasmonics; single-photon sources; symmetry in photonic crystals (1D; 2D; and 3D); nanolasers and spacers; metamaterials and metasurfaces; plasmonic sensors
(This special issue belongs to the Section Physics)
Symmetry and Asymmetry in Dark Energy and Dark Matter Models: Cosmological Implications
edited by
submission deadline 30 Apr 2025 | Viewed by 229 | Submission Open
Keywords: dark energy; dark matter; symmetry; asymmetry; modified gravity; observational constraints; cosmological models; large-scale structures; cosmic acceleration
(This special issue belongs to the Section Physics)
Symmetry in Mathematical Optimization Algorithm and Its Applications
edited by Zhe Sun
submission deadline 1 May 2025 | 2 articles | Viewed by 1802 | 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)
Symmetry in Cosmological Theories and Observations
edited by and Gansukh Tumurtushaa
submission deadline 20 May 2025 | 2 articles | Viewed by 2937 | Submission Open
Keywords: inflationary models and primordial symmetries; symmetry breaking in the early Universe; dark matter and dark energy models; cosmic microwave background radiation; gravitational waves and their implications for symmetry; galaxy formation and the large-scale structure of the Universe; baryogenesis and leptogenesis; symmetries in high-energy astrophysics; black holes and their symmetries; tests of fundamental symmetries using astronomical observations; symmetry principles in modified gravity theories; topological defects and cosmic strings; constraints on symmetry from cosmological data; symmetries in the evolution of the universe; role of symmetry in cosmological perturbations; asymmetry in cosmic baryon and lepton numbers; probing cosmological symmetries with next-generation observatories
(This special issue belongs to the Section Physics)
Symmetry/Asymmetry in Applied Machine Learning and Neural Networks for Hybrid Energy Ship Power System
edited by , Shuzheng Wang and Shaoping Chang
submission deadline 30 May 2025 | 1 articles | Viewed by 990 | Submission Open
Keywords: symmetry in ship energy power systems; symmetry in coordination control and optimization; life prediction and evaluation of energy storage systems; security mechanism under extreme disaster conditions
(This special issue belongs to the Section Computer)
Symmetry in Geometric Theory of Analytic Functions submission deadline 31 May 2025 | 36 articles | Viewed by 46408 | 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 Functional Equations and Inequalities, 2nd Edition submission deadline 31 May 2025 | 12 articles | Viewed by 18030 | Submission Open
(This special issue belongs to the Section Mathematics)
Mathematical Theories, Models and Methods in Applied Sciences: Deterministic, Stochastic and Symmetry Perspectives
edited by , Wei Gong and
submission deadline 31 May 2025 | 10 articles | Viewed by 16666 | Submission Open
Keywords: symmetry; PDEs; ODEs; dynamical systems; numerical analysis; materials science; nonlinear analysis; stochastic analysis
(This special issue belongs to the Section Mathematics)
Symmetrical Mathematical Computation in Fluid Dynamics
edited by and
submission deadline 31 May 2025 | 9 articles | Viewed by 16004 | Submission Open
Keywords: symmetry; mathematical computation of fluid dynamics; symmetry constraints; symmetry breaking; transitional flow; reduced-order modeling; data-driven models
(This special issue belongs to the Section Mathematics)
Three-Dimensional Dynamical Systems and Symmetry submission deadline 31 May 2025 | 6 articles | Viewed by 8787 | Submission Open
Keywords: mathematical models; continuous-time dynamical systems; discrete-time dynamical systems; time-delay dynamical systems; piecewise dynamical systems; fractional-order dynamical systems; symmetries; integrability; controllability; stability; special orbits (periodic orbits and limit cycles; homoclinic and heteroclinic orbits); bifurcations; chaotic behavior; numerical methods; numerical simulations
(This special issue belongs to the Section Mathematics)
Security Requirements and Challenges of Distributed Intelligent Devices and Applications
edited by Yu Jiang, , Shang Gao and Yuexiu Xing
submission deadline 31 May 2025 | 4 articles | Viewed by 8572 | Submission Open
Keywords: distributed device security; physical security of intelligent devices; power terminal security; device vulnerabilities; device data security; secure machine learning technique for data analysis; access authentication for distributed device; multi-agent devices security; new security challenges in distributed devices
(This special issue belongs to the Section Computer)
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