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 polices 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 in Mathematical Theory and Simulation Methods for Backward Problems
edited by
submission deadline 28 Feb 2025 | 4 articles | Viewed by 4312 | Submission Open
Keywords: backward problems; inverse problems; numerical analysis; mathematical modeling; fractional problems; ordinary/partial differential equations; meshless methods; applications; symmetry operators
(This special issue belongs to the Section Mathematics)
Computer-Aided Geometric Design and Matrices submission deadline 28 Feb 2025 | 2 articles | Viewed by 3503 | Submission Open
Keywords: matrices; total positivity; high relative accuracy; subdivision; splines and NURBS; shape analysis; isogeometric analysis; interpolation; approximation and smoothing; wavelets and multi-resolution methods; computer graphics; virtual design
(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 28 Feb 2025 | 3 articles | Viewed by 3458 | 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)
Applications Based on Symmetry/Asymmetry in Functional Data Analysis
edited by Nengxiang Ling
submission deadline 28 Feb 2025 | 2 articles | Viewed by 3389 | Submission Open
(This special issue belongs to the Section Mathematics)
Advances in Image Processing with Symmetry/Asymmetry
edited by and Shunli Zhang
submission deadline 28 Feb 2025 | 2 articles | Viewed by 2777 | 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)
Dynamics at Nanoscale: Linear and Nonlinear Studies
edited by Thierry Verbiest, and Sébastien R. Mouchet
submission deadline 28 Feb 2025 | 1 articles | Viewed by 2346 | Submission Open
Keywords: nonlinear nano-optics; nanophotonics; biophotonics; plasmonics; nonlinear optics; quantum plasmonics
(This special issue belongs to the Section Physics)
Symmetry/Asymmetry Study in Object Detection
edited by , Robert Kopal, and Nikola Protrka
submission deadline 28 Feb 2025 | 1 articles | Viewed by 1199 | Submission Open
Keywords: object detection; symmetry; asymmetry; computer vision; machine learning; algorithm optimization; feature analysis; detection accuracy; pattern recognition; image processing; computational geometry; artificial intelligence; deep learning; detection performance; visual perception; case studies; experimental results; real-world applications; geometric features; algorithm evaluation
(This special issue belongs to the Section Computer)
Symmetry in Fractional Derivatives, Fractional Equations and Fractional Order Systems
edited by Xiaoling Han and Chenghua Gao
submission deadline 28 Feb 2025 | 1 articles | Viewed by 965 | Submission Open
Keywords: fractional differential equations; delay differential equations; functional equations; partial differential equations; stochastic differential equations; integral equations; dynamical systems; applications of fixed-point theorems to nonlinear equations
(This special issue belongs to the Section Mathematics)
Symmetry in Advanced Materials and Nanotechnology
edited by Yuhao Li
submission deadline 28 Feb 2025 | 1 articles | Viewed by 869 | Submission Open
Keywords: symmetry breaking; graphene; moiré superlattices; flexoelectricity; ferroelectricity; atomic force microscopy; strain engineering; electrochemical property; multi-field coupling; mechanical behavior
(This special issue belongs to the Section Engineering and Materials)
Trends and Prospects in Image Processing with Symmetry/Asymmetry
edited by Zaidao Wen and Guanying Huo
submission deadline 28 Feb 2025 | Viewed by 709 | Submission Open
Keywords: symmetry detection; symmetric patterns; asymmetry analysis; image segmentation; image recognition; texture synthesis; object detection; anomaly detection; scene understanding; medical image analysis; visual perception; algorithms; computer vision; robotics; aesthetics; pattern recognition; image enhancement; feature extraction; image manipulation; visual symmetry
(This special issue belongs to the Section Computer)
Symmetry/Asymmetry in Robust Chaos and Chaotification–Theory and Applications submission deadline 28 Feb 2025 | Viewed by 487 | 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/Asymmetry in Artificial Intelligence for Healthcare Applications
edited by Yonggang Zhang, Hangyu Li and
submission deadline 28 Feb 2025 | Viewed by 394 | Submission Open
Keywords: artificial intelligence; healthcare; symmetry; brain tumour diagnosis; autism spectrum disorders; multimodal models for disease diagnosis; personalized medicine
(This special issue belongs to the Section Computer)
Advances in Neural Network/Deep Learning and Symmetry/Asymmetry
edited by Roberto Celio Limao de Oliveira, José Alfredo F. Costa, Rafael Stubs Parpinelli and Eduardo F. Simas Filho
submission deadline 28 Feb 2025 | Viewed by 359 | Submission Open
Keywords: applicable neural networks theory; augmented intelligence; computer vision and image processing; deep learning; deep learning applications; ethical deep learning; explainable deep learning; generative adversarial network; generative pre-trained transformer; hybrid intelligent systems; large language models; neural networks; neuro-fuzzy systems; symmetry/asymmetry; prediction analysis; supervised and unsupervised learning methods; transfer learning; trustworthy deep learning
(This special issue belongs to the Section Computer)
Asymmetric Supercapacitors and Electrode Materials
edited by
submission deadline 28 Feb 2025 | Viewed by 356 | Submission Open
Keywords: electrode materials; energy storage; supercapacitors; capacitor desalination; NiZn battery; micro-/device
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Intelligent Energy Harvesting Technologies and Symmetry: Recent Advances and Applications submission deadline 28 Feb 2025 | Viewed by 324 | Submission Open
Keywords: absorbers; Artificial Intelligence; electromagnetic energy harvesting; symmetric energy harvesting; IoT; UAVs
(This special issue belongs to the Section Engineering and Materials)
Symmetry and Asymmetry in Mechanical Engineering
edited by and Bin Dong
submission deadline 28 Feb 2025 | Viewed by 299 | Submission Open
Keywords: group theory; circulant matrix; model reduction; parity– time symmetry; tensegrity structures; mistuning; symmetry-breaking bifurcation
(This special issue belongs to the Section Engineering and Materials)
Developments in Mechanical Engineering and Symmetry
edited by Fuqiang Chen and
submission deadline 28 Feb 2025 | Viewed by 299 | Submission Open
Keywords: symmetry analysis; aerodynamic; acoustic; flow control; fluid dynamics; optimal design; computational fluid dynamics; structural control
(This special issue belongs to the Section Engineering and Materials)
Symmetry in Optoelectronic Information Technology and Imaging
edited by Linfei Chen
submission deadline 28 Feb 2025 | Viewed by 289 | Submission Open
Keywords: image encoding; information security; computational imaging; imaging quality; running speed; symmetry; asymmetry
(This special issue belongs to the Section Computer)
Symmetry/Asymmetry in Extra Dimensions and Brane Worlds
edited by Heng Guo
submission deadline 28 Feb 2025 | Viewed by 230 | Submission Open
Keywords: extra dimensions; large extra dimensions; warped extra dimension; brane worlds; field theories in higher dimensions; higher-dimensional gravity; domain wall; extended theories of gravity; localization
(This special issue belongs to the Section Physics)
Symmetry Studies in Applied Numerical Methods
edited by
submission deadline 28 Feb 2025 | Viewed by 221 | Submission Open
Keywords: symmetry; numerical methods; computational algorithms; efficiency; precision; robustness; wavelet theory; fluid dynamics; material science; computational physics; fractals; mathematical physics; theoretical breakthroughs; frame theory
(This special issue belongs to the Section Mathematics)
Symmetry or Asymmetry in Signal/Image Processing, Pattern Recognition, and Microwave/Millimeter-Wave Technologies
edited by and Yiming Yu
submission deadline 28 Feb 2025 | Viewed by 213 | Submission Open
Keywords: signal processing; image processing; pattern recognition; machine learning; microwave/millimeter-wave technologies
(This special issue belongs to the Section Computer)
Symmetry in Solving NP-Hard Problems
edited by Luka Fürst and Uroš Čibej
submission deadline 28 Feb 2025 | Viewed by 200 | Submission Open
Keywords: symmetry; NP-hard problems; NP-complete problems; combinatorial optimization; graph theory; complete search; dynamic programming; metaheuristics; evolutionary algorithms
(This special issue belongs to the Section Computer)
Neutrinos and Symmetry: Theoretical Developments and New Directions
edited by Davide Meloni and Alessio Giarnetti
submission deadline 28 Feb 2025 | Viewed by 198 | Submission Open
Keywords: neutrino masses; neutrino mixing; symmetries; new physics; model building
(This special issue belongs to the Section Physics)
Studies of Symmetry in Applied Numerical Methods
edited by and Rimantas Barauskas
submission deadline 28 Feb 2025 | Viewed by 196 | Submission Open
Keywords: solving systems of linear equations; solving nonlinear equations; solving differential equations; numerical integration and differentiation; interpolation and approximation; finding eigenvalues and eigenvectors; finite difference method; finite element method; semi-analytical finite elements; mechanical engineering; chemical engineering; electrical engineering; signal and image processing
(This special issue belongs to the Section Computer)
Biocatalysts and Symmetry
edited by and Qian Huang
submission deadline 28 Feb 2025 | Viewed by 193 | Submission Open
Keywords: biocatalysis; multifunctional biocatalysts; enzymatic syntheses; evolution of enzymes; engineered biocatalysts; chemical synthesis; pharmaceuticals; chiral compounds; computational techniques; stereoselectivity
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Symmetry-Based Properties in Two-Dimensional Materials submission deadline 28 Feb 2025 | Viewed by 192 | Submission Open
Keywords: two-dimensional materials; time-reversal symmetry; inversion symmetry; mirror symmetry; topological states; optical properties; mechanical properties
(This special issue belongs to the Section Engineering and Materials)
Symmetries, and Symmetry Breaking in String Theory
edited by Ivano Basile
submission deadline 28 Feb 2025 | Viewed by 191 | Submission Open
Keywords: symmetry; symmetry breaking; supersymmetry; gauge group; quantum gravity; string theory; swampland; anomaly; string universality; string landscape
(This special issue belongs to the Section Physics)
Matter and Antimatter Asymmetry in Cosmology and Particle Physics
edited by Luiz Garcia De Andrade and Zhifu Gao
submission deadline 28 Feb 2025 | Viewed by 183 | Submission Open
Keywords: cosmology; particle physics; modified gravity; pulsar astronomy; matter and antimatter; loop quantum gravity
(This special issue belongs to the Section Physics)
Advances in Quantum Theory with Symmetry
edited by Diandong Tang, Chad E. Hoyer and Xuechen Zheng
submission deadline 28 Feb 2025 | Viewed by 180 | Submission Open
Keywords: vibrational and/or electronic spectroscopy; molecular chirality and stereochemistry; symmetry-adapted machine learning for quantum chemistry; application of symmetry in quantum computing; topology in condensed matter physics
(This special issue belongs to the Section Chemistry: Symmetry/Asymmetry)
Symmetries/Asymmetries in Neurorehabilitation
edited by
submission deadline 28 Feb 2025 | Viewed by 178 | Submission Open
Keywords: neurorehabilitation; symmetry; asymmetry; central motor neuron diseases; multiple sclerosis; spinal cord injuries; stroke; advanced technologies; robotics; exoskeletons; functional electrical stimulation; repetitive transcranial magnetic stimulation (rTMS); virtual reality; motor and sensory impairments; personalized therapeutic interventions
(This special issue belongs to the Section Life Sciences)
Symmetry and Asymmetry in Object Detection, Object Tracking, and Behaviour Understanding
edited by Mohamed Naiel
submission deadline 28 Feb 2025 | Viewed by 132 | Submission Open
Keywords: object detection; pose estimation; multi-object tracking; object tracking; behaviour recognition; action recognition; activity recognition
(This special issue belongs to the Section Computer)
Security and Privacy Challenges in 5G Networks submission deadline 10 Mar 2025 | 3 articles | Viewed by 3642 | Submission Open
Keywords: 5G; security; privacy; cryptography; steganography; cloud service; IoT; 5G applications; forensics
(This special issue belongs to the Section Computer)
Symmetry and Asymmetry in Cyber Security, IoTs and Privacy
edited by Rodrigo Sanches Miani and
submission deadline 12 Mar 2025 | Viewed by 801 | 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)
Fibonacci and Lucas Numbers and the Golden Ratio in Physics and Biology submission deadline 31 Mar 2025 | 6 articles | Viewed by 30358 | 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)
Symmetric and Asymmetric Data in Solution Models, Part II submission deadline 31 Mar 2025 | 6 articles | Viewed by 27823 | Submission Open
Keywords: Symmetry and asymmetry particularities in sustainable development modelling; Symmetry and asymmetry particularities in economics and business modelling; Symmetry and asymmetry particularities in public; environmental; and occupational health; Symmetry and asymmetry particularities in engineering and technology; Symmetric and asymmetric information properties for extreme situation modelling; Data mining and integration of symmetric and asymmetric information; Description of symmetric and asymmetric data in models; Multiple-criteria problem solution models with certainly and vague determined data; Symmetric and asymmetric risks of problems; Hybrid problem solution models; Fuzzy sets; Intuitionistic fuzzy sets; Neutrosophic sets; Rough sets; Grey systems; Novel descriptions of sets; Computer-aided problem solution
(This special issue belongs to the Section Computer)
The Dark Universe: The Harbinger of a Major Discovery
edited by
submission deadline 31 Mar 2025 | 10 articles | Viewed by 17840 | Submission Open
Keywords: Dark matter; ; Dark energy; ; Dark matter streams; ; Cosmic rays; ; Matter antimatter asymmetry; ; Cosmology; Models; ; Dark Universe; ; Symmetry;   ; axion; ; WIMP; ; Beyond SM physics; ; Direct dark matter signatures; ; Astrophysical dark matter signatures; ; Detection techniques; ; Cosmological constant; ; Variable physics constants; ; Gravitation;
(This special issue belongs to the Section Physics)
Theory and Applications of Special Functions II
edited by
submission deadline 31 Mar 2025 | 9 articles | Viewed by 15211 | Submission Open
(This special issue belongs to the Section Physics)
100 Years of Quantum Matter Waves: Celebrating the Work of Louis De Broglie
edited by
submission deadline 31 Mar 2025 | 6 articles | Viewed by 13901 | Submission Open
Keywords: quantum matter waves; quantum mechanics; quantum foundations; hydrodynamical; mechanical; nonlinear wave equations
(This special issue belongs to the Section Physics)
Symmetry Application in Motor Control in Sports and Rehabilitation submission deadline 31 Mar 2025 | 5 articles | Viewed by 11235 | Submission Open
Keywords: assessment of symmetry and its clinical relevance; body symmetry and the performance of activities of daily living; sports performance and symmetry; symmetry and sports injury prevention; fall prevention and symmetry in postural alignment and bodyweight distribution; role of sidedness; handedness; and footedness in motor control; effects of clinical interventions on symmetry in people with neurologic or musculoskeletal conditions
(This special issue belongs to the Section Life Sciences)
Symmetry/Asymmetry Studies in Modern Power Systems
edited by , Zhong Chen, Lei Chen and
submission deadline 31 Mar 2025 | 8 articles | Viewed by 10258 | Submission Open
Keywords: power systems; power electronics; symmetrical faults; asymmetrical faults; power system stability; balanced conditions; grid-forming converters
(This special issue belongs to the Section Engineering and Materials)
Symmetrical and Asymmetrical Distributions in Statistics and Data Science II submission deadline 31 Mar 2025 | 8 articles | Viewed by 10246 | 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)
Symmetry and Quantum Orders
edited by
submission deadline 31 Mar 2025 | 5 articles | Viewed by 9582 | Submission Open
Keywords: topological phases; quantum orders; quantum magnetism; global symmetries; gauge symmetries; higher-form symmetries; emergent symmetries; fractons; quantum phase transitions; lattice models; effective field theory; tensor network states; entanglement; broken symmetry
(This special issue belongs to the Section Physics)
Machine Learning and Data Analysis II
edited by
submission deadline 31 Mar 2025 | 6 articles | Viewed by 8776 | Submission Open
Keywords: machine learning; data analysis; process modelling; time series prediction
(This special issue belongs to the Section Computer)
Symmetry in the Soliton Theory
edited by , Dianchen Lu, and
submission deadline 31 Mar 2025 | 4 articles | Viewed by 8119 | 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 Asymmetry in Information Security and Network Security
edited by Bingwen Feng
submission deadline 31 Mar 2025 | 6 articles | Viewed by 7956 | Submission Open
Keywords: network security; data hiding; information security
(This special issue belongs to the Section Computer)
Computational Mathematics and Its Applications in Numerical Analysis
edited by and
submission deadline 31 Mar 2025 | 6 articles | Viewed by 6720 | Submission Open
Keywords: computational mathematics for data science; applied mathematics in optimization problems; signal processing and mathematical images; scientific computing and algorithms; numerical analysis for problems arising in various fields 
(This special issue belongs to the Section Mathematics)
Nonlinear Differential and Integral Equations and Their Infinite Systems submission deadline 31 Mar 2025 | 5 articles | Viewed by 6508 | Submission Open
Keywords: nonlinear differential equation; nonlinear integral equation; stability of solutions; asymptotic stability of solutions; asymptotic behaviour of solutions at infinity; infinite system of nonlinear differential equations; infinite system of nonlinear integral equations; sequence Banach space; compactness conditions
(This special issue belongs to the Section Mathematics)
Skewed (Asymmetrical) Probability Distributions and Applications Across Disciplines Fourth Edition submission deadline 31 Mar 2025 | 6 articles | Viewed by 6318 | Submission Open
Keywords: new applications and parameter interpretations of the main skewed distributions; parameter estimation and statistical developments; advances in modelling and simulations (i.e.; Monte Carlo sampling) of processes in mathematics; physics; chemistry; biology; and social sciences; efficient numerical methods to handle skewed distributions; skewed distributions and the modelling of infectious diseases; including COVID-19; the true meaning of skewed distributions in nature; skewed distributions in psychological and neurological sciences; non-normal distributions in biological and medical sciences; skewed distributions in describing social processes; the origin and fundamental interpretations of skewed distributions in mathematics; physics; chemistry; biology; and social sciences
(This special issue belongs to the Section Mathematics)
Symmetry in Nonlinear Partial Differential Equations and Rogue Waves
edited by
submission deadline 31 Mar 2025 | 4 articles | Viewed by 6150 | Submission Open
Keywords: nonlinear waves; coherent structures; the nonlinear Schrö dinger (NLS) equation; soliton on constant background; breathers; freak waves; rogue waves; extreme waves; wave packets; modulational instability; phase singularity; wavefront dislocation; variational formulation; maximum temporal amplitude; amplification factor; dissipation; surface gravity waves; nonlinear optics; superconductivity; plasma physics; Bose– Einstein condensates
(This special issue belongs to the Section Mathematics)
Security, Communication and Privacy in Internet of Things: Symmetry and Advances — Volume II
edited by
submission deadline 31 Mar 2025 | 4 articles | Viewed by 6038 | Submission Open
Keywords: artificial intelligence; information security; communication and privacy; multimedia processing; Internet of Things; symmetry application; intellectual property
(This special issue belongs to the Section Computer)
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