Special Issues

Fractal and Fractional 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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Applications of General Fractional Calculus Models: Insights into Viscoelasticity and Wave Propagation
edited by Yiying Feng, , Yiming Wang and
submission deadline 15 Nov 2026 | 8 articles | Viewed by 12971 | Submission Open
Keywords: general fractional calculus; integration of mathematics and engineering; fractional rheological models; fractal dimensional space; nonlinear theory; fractional wave propagation models
(This special issue belongs to the Section Engineering)
Artificial Intelligence and Fractional Modelling for Energy Systems submission deadline 15 Nov 2026 | 2 articles | Viewed by 2448 | Submission Open
Keywords: adaptive and learning algorithms; digital twin behaviour-matching algorithms; fractional-order modelling; optimisation methods; edge artificial intelligence; AI at the Edge; AI on the Edge; edge computing with AI; peripheral AI; peripheral artificial intelligence; decentralised AI computing; real-time AI; low-latency AI processing; real-time AI inference; AI in embedded systems; edge machine learning (Edge ML); AI for smart sensors
(This special issue belongs to the Section Optimization, Big Data, and AI/ML)
Advances in Fractional Order Signal Processing: Theory and Methods
edited by Yuan-Min Li and Deyun Wei
submission deadline 15 Nov 2026 | 1 articles | Viewed by 983 | Submission Open
Keywords: fractional integral transform; sparse fractional order transform; sparse representation and fast algorithm; graph transform; sampling and filtering; convolutional neural network; digital signal processing
(This special issue belongs to the Section Engineering)
Advances in Fractional-Order Control for Nonlinear Systems submission deadline 16 Nov 2026 | 5 articles | Viewed by 3779 | Submission Open
Keywords: fractional-order control; nonlinear systems; fractional calculus; variable-order controllers; adaptive control; robust control; stability analysis; Lyapunov methods; fractional PID controllers; backstepping control; memory-dependent systems; hybrid fractional–integer control; computational complexity in control; real-time control systems; human–robot interaction; power electronics control; biomedical systems control; mechatronic systems; industrial automation; process control
(This special issue belongs to the Section Engineering)
Recent Advances in Fractional Fourier Transforms and Applications, 3rd Edition submission deadline 25 Nov 2026 | 2 articles | Viewed by 1301 | Submission Open
Keywords: fractional Fourier transform; linear canonical transform; digital signal processing; fractional integral operator; partial differential equations
(This special issue belongs to the Section General Mathematics, Analysis)
Fractional Order Systems with Application to Electrical Power Engineering, 3rd Edition submission deadline 30 Nov 2026 | 9 articles | Viewed by 11137 | Submission Open
Keywords: fractional order system; distributed energy resources; energy storage system; multi-energy systems; power electronic systems; power converters; renewable energy systems; artificial intelligence; stability analysis; intelligent control; fractional calculus; reliability and resiliency
(This special issue belongs to the Section Engineering)
Harmonic and Geometric Analysis for Fractional Equations
edited by Leandro Tavares and
submission deadline 30 Nov 2026 | 3 articles | Viewed by 3771 | Submission Open
Keywords: fractional equations; fractional operators; fractional derivatives; harmonic analysis; geometric analysis; regularity estimates; fractional Laplacian; geometric aspects of fractional equations; variational methods; existence of solutions; multiplicity
(This special issue belongs to the Section General Mathematics, Analysis)
Multiscale Fractal Analysis in Unconventional Reservoirs, 2nd Edition
edited by and
submission deadline 30 Nov 2026 | 4 articles | Viewed by 2571 | Submission Open
Keywords: multiscale fractal analysis; unconventional reservoirs; fractal geometry; fracture network characterization; pore structure analysis; fluid flow modeling; reservoir simulation; machine learning; digital rock physics
(This special issue belongs to the Section Engineering)
Numerical Solutions of Caputo-Type Fractional Differential Equations and Derivatives, Second Edition
edited by Phumlani Dlamini and Simphiwe Simelane
submission deadline 30 Nov 2026 | 3 articles | Viewed by 1364 | Submission Open
Keywords: Caputo-type fractional differential equations; Caputo-type fractional derivatives; generalized fractional derivatives; fractional inequalities; fractional operator; fractional Green’s functions; fractional Laplace transform; fractional evolution equations; finite difference schemes; spectral methods; existence and uniqueness; stability; controllability; iterative learning controls
(This special issue belongs to the Section Numerical and Computational Methods)
Fixed Point Theory and Fractals, 2nd Edition submission deadline 30 Nov 2026 | 2 articles | Viewed by 1316 | Submission Open
Keywords: fixed point theorems; fractal sets, functions and measures; fixed-point approximation and stability; iterative methods for the solution of differential and integral equations; iterated function systems; discrete dynamical systems; fractional calculus related to fixed point theory, dynamical systems or deterministic/stochastic fractals; the applications of these above fields; multifractal analysis, fractal geometry, dynamical systems and ergodic theory
(This special issue belongs to the Section General Mathematics, Analysis)
Fractional and Fractal Methods with Their Mechanics Applications
edited by , Lucero Damián-Adame and
submission deadline 30 Nov 2026 | 1 articles | Viewed by 1198 | Submission Open
Keywords: fractals calculus; fractional calculus; fractal continuum; hurst exponent; cluster percolation; fractal dynamics; wave phenomena; time series; mechanical vibrations; thermal analysis
(This special issue belongs to the Section Mathematical Physics)
Advances in Fractional-Order Memristive High-Dimensional Neural Networks: Dynamics, Synchronization, and Brain-Inspired Engineering Applications
edited by Jianying Xiao
submission deadline 30 Nov 2026 | 1 articles | Viewed by 577 | Submission Open
Keywords: fractional-order systems; intelligent control; neural networks; memristive systems; stability analysis; synchronization; lyapunov method
(This special issue belongs to the Section Engineering)
Advances in Existence Theory and Stability of Variable Fractional Systems
edited by , Nguyen Thanh Chung, Shapour Heidarkhani and
submission deadline 30 Nov 2026 | Viewed by 503 | Submission Open
Keywords: variable-order fractional derivatives; existence and uniqueness; stability analysis; lyapunov methods; fractional differential equations; time-varying systems; fixed point theory; asymptotic behavior; distributed-order models; nonlocal dynamics
(This special issue belongs to the Section General Mathematics, Analysis)
Connecting Quantum Computing and Fractals to Tackle Challenges in Medicine
edited by Consolato M. Sergi
submission deadline 30 Nov 2026 | Viewed by 374 | Submission Open
Keywords: quantum biology; quantum mechanics; biophysics; cancer; complexity; fractal characteristics; microstructures
(This special issue belongs to the Section Life Science, Biophysics)
Fractional Control Systems and Estimation: Control, State Observers and Parameter Estimation, 2nd Edition submission deadline 30 Nov 2026 | Viewed by 297 | Submission Open
Keywords: adaptive identification and control; robust control; PID control; parameter estimation; state observers
(This special issue belongs to the Section Engineering)
From Fractals to Fractional Calculus: Nonlinear Dynamics and Hybrid Complex Systems
edited by Katica (Stevanović) Hedrih
submission deadline 10 Dec 2026 | 5 articles | Viewed by 5031 | Submission Open
Keywords: fractals; nonlinear dynamics; fractional calculus; mathematical phenomenology; hybrid systems; complex structures; discrete and continuous dynamic systems
(This special issue belongs to the Section General Mathematics, Analysis)
Fractal Analysis and Its Applications in Rock Engineering, Second Edition
edited by , and Gaofeng Liu
submission deadline 15 Dec 2026 | 11 articles | Viewed by 12003 | Submission Open
Keywords: fractal analysis and modeling; fragmentation; rock mechanics; rock fractures; rock microstructures; rock engineering; geomechanical processes; engineering application
(This special issue belongs to the Section Engineering)
Fractional Elliptic and Parabolic Equations: Analysis and Related Topics
edited by Wenxiong Chen and Leyun Wu
submission deadline 18 Dec 2026 | 3 articles | Viewed by 4572 | Submission Open
Keywords: fractional elliptic equations; fractional parabolic equations; fractional laplacian; non-local operators; variational method; multiplicity numerical analysis; applications of fractional equations; nonlinearity, symmetry, monotonicity, a priori estimate, existence, non-existence, uniqueness, classification, method of moving planes, sliding method, etc.
(This special issue belongs to the Section General Mathematics, Analysis)
Numerical Solution and Applications of Fractional Differential Equations, 3rd Edition
edited by , and
submission deadline 20 Dec 2026 | 10 articles | Viewed by 11289 | Submission Open
Keywords: numerical methods; mathematical modelling; fractional calculus; fractional differential equations; numerical analysis; fast algorithm
(This special issue belongs to the Section Numerical and Computational Methods)
Novel and Effective Applications of Fractional-Order Models submission deadline 25 Dec 2026 | 1 articles | Viewed by 1953 | Submission Open
Keywords: fractional calculus; fractional-order modeling; fractional-order control; FOPID controllers; fractional-order system identification; stability and robustness analysis; numerical implementation and approximation; real-world applications and experimental validation
(This special issue belongs to the Section General Mathematics, Analysis)
Advances in Fractional Order Systems and Robust Control, 3rd Edition
edited by
submission deadline 25 Dec 2026 | 1 articles | Viewed by 1060 | Submission Open
Keywords: fractional order systems; fractional differential equations; robust control; fractional controllers; stability analysis; modeling
(This special issue belongs to the Section Engineering)
Fractal and Fractional Analysis in Biomedical Sciences and Engineering, 2nd Edition submission deadline 30 Dec 2026 | Viewed by 817 | Submission Open
Keywords: fractal and multifractal analysis; fractal lacunarity analysis; fractional calculus; fractional differential equations; convergence and stability analysis; biological system complexity; non-linear biosystem dynamics; medical image and data analysis; neural networks and graphs; long-term correlation tracking
Advances in Fractional Stochastic Differential Equations and Their Real-World Applications
edited by and Ching‑Feng Wen
submission deadline 30 Dec 2026 | Viewed by 341 | Submission Open
Keywords: fractional differential equations; stochastic differential equations; fractional-order dynamical systems; stochastic variational inequalities; fuzzy fractional differential inclusions; well-posedness analysis; hemivariational inequalities; controllability; optimality conditions; solvability or uniqueness
(This special issue belongs to the Section General Mathematics, Analysis)
Recent Trends in Computational Physics with Fractional Applications
edited by , , and Udoh Akpan
submission deadline 31 Dec 2026 | 5 articles | Viewed by 6907 | Submission Open
Keywords: stability analysis; integral equations; semi-analytical method; traveling wave solutions; analytical and numerical methods; soliton theory and its applications; fractional calculus and its applications; ordinary and partial differential equations; symmetry analysis and conservation laws; mathematical modeling of flow in porous media; multi-scale approaches to modeling wave phenomena; high-order numerical differential formulas for fractional derivatives; numerical and computational methods in fractional differential equations
(This special issue belongs to the Section Mathematical Physics)
Modeling and Dynamic Analysis of Fractional-Order Systems
edited by Li Ma and Fanhai Zeng
submission deadline 31 Dec 2026 | 5 articles | Viewed by 6546 | Submission Open
Keywords: stability and control of fractional-order systems; reductions for fractional-order systems; bifurcation and chaos in fractional-order systems; discrete-time or continuous-time fractional-order systems; modeling via fractional calculus; generalized fractional calculus; numerical methods for fractional-order systems
(This special issue belongs to the Section General Mathematics, Analysis)
Advances in Fractal and Fractional Dynamics submission deadline 31 Dec 2026 | 7 articles | Viewed by 3108 | Submission Open
Keywords: fractional calculus; fractal geometry; nonlocal dynamics; complex systems; fractional PDEs; stochastic processes; multiscale modeling; network dynamics
Fractional Transform Methods in Complexity Analysis: Theory and Image Applications
edited by
submission deadline 31 Dec 2026 | 2 articles | Viewed by 2680 | Submission Open
Keywords: complexity analysis; fractional theory; fractals theory; nonlinear dynamics; image encryption and coding; image compression; image watermarking and information hiding; image segmentation and processing; control and stability with complexities; AI methods in image processing
(This special issue belongs to the Section Complexity)
Fractional Stochastic Process: Theory and Applications submission deadline 31 Dec 2026 | 3 articles | Viewed by 2360 | Submission Open
Keywords: classic and quantum mechanics; equilibrium and non-equilibrium; fluids, granular and soft matter; fractional calculus in statistical mechanics; fractional calculus in statistical physics; interdisciplinary statistical mechanics; interdisciplinary statistical physics; fault diagnosis; life prediction; signals processing; neuronal signal analysis (EEG, BCI); mathematical modeling of diseases
(This special issue belongs to the Section Probability and Statistics)
Advances in Fractional Dynamics and Their Applications in Seismology
edited by and Bingluo Gu
submission deadline 31 Dec 2026 | 2 articles | Viewed by 1697 | Submission Open
Keywords: fractional wave equation; fractional laplacian; time-/space-domain fractional derivatives; seismic modeling, imaging, and inversion
(This special issue belongs to the Section Mathematical Physics)
Fractional Modeling and Dynamics Analysis of Complex Systems
edited by , and Kuan Lu
submission deadline 31 Dec 2026 | 2 articles | Viewed by 1226 | Submission Open
Keywords: fractional order modeling; complex dynamical systems; statistical characteristics; computational methods of fractional mechanics; fractional order stiffness and damping effects in mechanical systems; propagation of uncertainty in complex dynamical systems; fractal surface topology in contact mechanics; development of solution methods for fractional nonlinear systems
(This special issue belongs to the Section Numerical and Computational Methods)
Fractal and Fractional Modelling in Deep Mining and Geomechanics
edited by Teng Teng, and Zhengzheng Cao
submission deadline 31 Dec 2026 | 2 articles | Viewed by 759 | Submission Open
Keywords: rock mechanics and rock engineering; fractal geometry and dimension; fractional calculus and constitutive models; pore structure and permeability; deep mining and geomechanics; multi-physics coupling; rock damage and fracture
(This special issue belongs to the Section Engineering)
Fractal and Lacunarity Analysis of Time Series and Images: Foundations and Applications submission deadline 31 Dec 2026 | 1 articles | Viewed by 636 | Submission Open
Keywords: lacunarity; fractality; time series; images; data science
(This special issue belongs to the Section Complexity)
Design and Applications of Fractional-Order Circuits and Filters submission deadline 31 Dec 2026 | Viewed by 617 | Submission Open
Keywords: Cauer and Foster networks; fractional-order circuit theory; fractional-order control systems
(This special issue belongs to the Section Engineering)
Applications of Multifractal Analysis in Medical Signal and Image Processing submission deadline 31 Dec 2026 | Viewed by 343 | Submission Open
Keywords: fractal analysis; multifractal analysis; morphometry; medical image analysis; biomedical signal processing; machine learning in medicine; computational biophysics
(This special issue belongs to the Section Life Science, Biophysics)
Fractional Order Modeling of Fluid Flow and Heat Transfer
edited by Razi Khan and
submission deadline 31 Dec 2026 | Viewed by 285 | Submission Open
Keywords: fractional calculus; fractional differential equations (FDEs); viscoelastic fluid flow; non-Newtonian fluids; nanofluids, hybrid and trihybrid fluids; heat and mass transfer; magnetohydrodynamics (MHD); computational fluid dynamics (CFD); fractional disease dynamics and epidemiological modelling; artificial neural networks (ANNs); physics-informed neural networks (PINNs)
(This special issue belongs to the Section Mathematical Physics)
Fractional Calculus in Stochastic Systems, Game Theory and Decision Making
edited by Yoon-Tae Kim
submission deadline 31 Dec 2026 | Viewed by 255 | Submission Open
Keywords: fractional Brownian motion; fractional differential equation; fractional stochastic differential equation; fractional calculus; Malliavin calculus; long-range dependence; fractional differential games; fractional optimal control; fractional Markov decision processes
(This special issue belongs to the Section Probability and Statistics)
Recent Advances in Fixed Point Theory and Applications to Fractional Differential Equations
edited by Jamshaid Ahmad and
submission deadline 1 Jan 2027 | 4 articles | Viewed by 2400 | Submission Open
Keywords: fixed point theory; fractional differential equations; generalized metric spaces; generalized contractions; integral and integro-differential equations; stability analysis; applications of fractional calculus
(This special issue belongs to the Section General Mathematics, Analysis)
Advances in Fractional Modeling and Computation, Second Edition submission deadline 15 Jan 2027 | 4 articles | Viewed by 6938 | Submission Open
Keywords: fractional models in natural sciences; fractional models in economics and engineering; numerical algorithms and discretization; fractional differential systems with control theory; fractional dynamic systems; analysis of fractional models; stochastic methods for fractional models; Monte Carlo methods; Markov chains and processes; stochastic modeling and simulation; related fractional models
(This special issue belongs to the Section Numerical and Computational Methods)
Fractional-Order Systems: Modeling and Control Applications in Engineering
edited by and
submission deadline 15 Jan 2027 | 3 articles | Viewed by 4145 | Submission Open
Keywords: fractional-order differential or difference equations; fractional controlling theories; fractional-order systems; numerical methods; optimization techniques; complex networks; neural networks; applications in robotics and automation; applications in power and electrical systems; applications in mechanical systems; applications in biomedical engineering; applications in signal processing and communications
(This special issue belongs to the Section General Mathematics, Analysis)
New Horizons in Fractional and Fractal Dynamics: Unraveling Complexity in Chaotic Systems
edited by and
submission deadline 15 Jan 2027 | 2 articles | Viewed by 2538 | Submission Open
Keywords: fractional-order systems; stability analysis; fractional-order control theory; high-dimensional fractional-fractal simulation; chaotic time series analysis; machine learning for fractional chaos; fractal network dynamics; biological oscillator modeling; economic fractal models; security encryption applications
(This special issue belongs to the Section Complexity)
Fractional-Order Modeling in Data-Driven Intelligent Systems: From Optimization to AI/ML Applications
edited by Yan Li and Ziquan Yu
submission deadline 15 Jan 2027 | 1 articles | Viewed by 829 | Submission Open
Keywords: fractional-order calculus in AI/ML; control theoretic ML; large-scale optimization; safe/explainable AI; real-time ML; interdisciplinary integration
(This special issue belongs to the Section Optimization, Big Data, and AI/ML)
Fractal and Fractional Modelling Applied to Energy Storage
edited by Mei Yin and
submission deadline 30 Jan 2027 | Viewed by 375 | Submission Open
Keywords: fractional calculus; anomalous heat and mass transfer; renewable and hybrid energy systems; geothermal applications; viscoelastic modelling; computational strategies
(This special issue belongs to the Section Engineering)
Fractional Calculus with Applications in Rock Mechanics and Mining Engineering
edited by and
submission deadline 31 Jan 2027 | 4 articles | Viewed by 2092 | Submission Open
Keywords: fractional calculus; fractional modelling; fractional-order evolution; fractional-order image recognition and reconstruction; fractional-order AI/deep mining; fractional-order multiphysics coulping methods; fractional signal/information processing; rock dynamics; rock mechanics; mining engineering; deep mining
(This special issue belongs to the Section Engineering)
Complexity, Fractality and Fractional Dynamics Applied to Science and Engineering, 2nd Edition
edited by Alexandra M. S. F. Galhano, and
submission deadline 31 Jan 2027 | 1 articles | Viewed by 1758 | Submission Open
Keywords: fractional-order systems; memory; econophysics; time series; finance; economics, big data; complex systems; biosystems; fractals
(This special issue belongs to the Section Complexity)
Emerging Trends in Fractal Geometry and Dynamic Systems
edited by , Zhiming Li, Megha Pandey and
submission deadline 31 Jan 2027 | 1 articles | Viewed by 1383 | Submission Open
Keywords: fractal geometry; multifractal analysis; geometric analysis; dynamical systems; fractal models; fractal sets; ergodic theory; measure theory
(This special issue belongs to the Section Geometry)
Fractal and Fractional Approaches in Interdisciplinary Mechanics
edited by Yajun Yin and
submission deadline 31 Jan 2027 | 1 articles | Viewed by 910 | Submission Open
Keywords: fractal theory; fractional calculus; interdisciplinary mechanics; nonconventional approach; nonlinear mechanical behavior; local fractional operators; multi-scale characterization; memory-dependent effects; engineering applications
(This special issue belongs to the Section Engineering)
Advances in Fractional Integral Inequalities: Theory and Applications, Second Edition submission deadline 31 Jan 2027 | 1 articles | Viewed by 881 | Submission Open
Keywords: fractional integral inequalities; numerical integrations methods; operator theory; convex and concave functions.
(This special issue belongs to the Section General Mathematics, Analysis)
Advances in Fractional-Order PID Control: Theory and Applications
edited by and César-Fernando Méndez-Barrios
submission deadline 31 Jan 2027 | Viewed by 714 | Submission Open
Keywords: fractional systems; PID control; control theory; chaotic dynamics; automatic control; real-world applications; time-delay systems
(This special issue belongs to the Section Engineering)
Fractal Geometry in Contact Mechanics: Characterization, Simulation and Real-World Applications submission deadline 31 Jan 2027 | Viewed by 328 | Submission Open
Keywords: random fractal surfaces; contact mechanics; fractal dimension; multifractal surfaces; measurement and characterization; surface simulation; contact simulation; finite element method; boundary element method; elastoplastic behavior; viscoelastic behavior
(This special issue belongs to the Section Geometry)
Fractional-Order Control Systems Under Uncertainty: Advanced Methods and Applications submission deadline 31 Jan 2027 | Viewed by 237 | Submission Open
Keywords: fractional-order control; FOPID; uncertainty; robust control; model predictive control; sliding mode control; adaptive control; system identification; nonlinear systems; data-driven control; control applications
(This special issue belongs to the Section Engineering)
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