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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Advances in Fractional-Order Control for Nonlinear Systems submission deadline 15 Nov 2026 | 3 articles | Viewed by 1991 | 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)
Artificial Intelligence and Fractional Modelling for Energy Systems submission deadline 15 Nov 2026 | 2 articles | Viewed by 1912 | 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 802 | 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)
Recent Advances in Fractional Fourier Transforms and Applications, 3rd Edition submission deadline 25 Nov 2026 | 1 articles | Viewed by 805 | 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)
Harmonic and Geometric Analysis for Fractional Equations
edited by Leandro Tavares and
submission deadline 30 Nov 2026 | 2 articles | Viewed by 3040 | 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 | 3 articles | Viewed by 1318 | 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)
Fractional and Fractal Methods with Their Mechanics Applications
edited by , Lucero Damián-Adame and
submission deadline 30 Nov 2026 | 1 articles | Viewed by 981 | 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)
Numerical Solutions of Caputo-Type Fractional Differential Equations and Derivatives, Second Edition
edited by Phumlani Dlamini and Simphiwe Simelane
submission deadline 30 Nov 2026 | 1 articles | Viewed by 365 | 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)
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 290 | 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 Fractal to Tackle Challenges in Medicine
edited by Consolato M. Sergi
submission deadline 30 Nov 2026 | Viewed by 262 | Submission Open
Keywords: quantum biology; quantum mechanics; biophysics; cancer; complexity; fractal characteristics; microstructures
(This special issue belongs to the Section Life Science, Biophysics)
Fixed Point Theory and Fractals, 2nd Edition submission deadline 30 Nov 2026 | Viewed by 219 | 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 Control Systems and Estimation: Control, State Observers and Parameter Estimation, 2nd Edition submission deadline 30 Nov 2026 | Viewed by 210 | Submission Open
Keywords: adaptive identification and control; robust control; PID control; parameter estimation; state observers
(This special issue belongs to the Section Engineering)
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 | Viewed by 124 | 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)
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 4535 | 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 | 8 articles | Viewed by 9297 | 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 4127 | 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)
Novel and Effective Applications of Fractional-Order Models submission deadline 25 Dec 2026 | 1 articles | Viewed by 874 | 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 750 | 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 694 | 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 226 | 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 5971 | 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 5557 | 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)
Fractional Transform Methods in Complexity Analysis: Theory and Image Applications
edited by
submission deadline 31 Dec 2026 | 2 articles | Viewed by 1690 | 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)
Advances in Fractional Dynamics and Their Applications in Seismology
edited by and Bingluo Gu
submission deadline 31 Dec 2026 | 1 articles | Viewed by 1193 | 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 678 | 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)
Advances in Fractal and Fractional Dynamics submission deadline 31 Dec 2026 | 1 articles | Viewed by 518 | Submission Open
Keywords: fractional calculus; fractal geometry; nonlocal dynamics; complex systems; fractional PDEs; stochastic processes; multiscale modeling; network dynamics
Design and Applications of Fractional-Order Circuits and Filters submission deadline 31 Dec 2026 | Viewed by 488 | Submission Open
Keywords: Cauer and Foster networks; fractional-order circuit theory; fractional-order control systems
(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 | Viewed by 255 | Submission Open
Keywords: lacunarity; fractality; time series; images; data science
(This special issue belongs to the Section Complexity)
Fractal and Fractional Modelling in Deep Mining and Geomechanics
edited by Teng Teng, and Zhengzheng Cao
submission deadline 31 Dec 2026 | Viewed by 242 | 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)
Applications of Multifractal Analysis in Medical Signal and Image Processing submission deadline 31 Dec 2026 | Viewed by 228 | 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 195 | 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 172 | 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 | 1 articles | Viewed by 838 | 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 5670 | 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 3450 | 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)
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 550 | 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)
Fractional Calculus with Applications in Rock Mechanics and Mining Engineering
edited by and
submission deadline 31 Jan 2027 | 2 articles | Viewed by 1168 | 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)
Emerging Trends in Fractal Geometry and Dynamic Systems
edited by , Zhiming Li, Megha Pandey and
submission deadline 31 Jan 2027 | 1 articles | Viewed by 850 | 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)
Advances in Fractional Integral Inequalities: Theory and Applications, Second Edition submission deadline 31 Jan 2027 | 1 articles | Viewed by 355 | 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)
Fractal and Fractional Approaches in Interdisciplinary Mechanics
edited by Yajun Yin and
submission deadline 31 Jan 2027 | Viewed by 219 | 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)
Analysis and Modeling of Fractional-Order Dynamical Networks, Second Edition
edited by Fei Wang and
submission deadline 31 Jan 2027 | Viewed by 161 | Submission Open
Keywords: fractional-order systems; neural networks; gene regulatory networks; dynamical networks; multi-agent systems; coupled systems; synchronization control; heterogeneous networks; analysis of dynamic behavior
(This special issue belongs to the Section Complexity)
Fractional-Order Modeling for Nonlinear and Memory-Dependent Systems submission deadline 31 Jan 2027 | Viewed by 134 | Submission Open
Keywords: fractional order modelling; fractional neural networks (FNNs); nonlinear differential equations keywords; AI and data-driven modeling; system identification; digital twins in process industry; energy storage systems.
(This special issue belongs to the Section General Mathematics, Analysis)
Fractional-Order Control Systems Under Uncertainty: Advanced Methods and Applications submission deadline 31 Jan 2027 | Viewed by 115 | 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)
Analysis, Control and Computation of Fractional Evolution Processes
edited by and
submission deadline 31 Jan 2027 | Viewed by 75 | Submission Open
Keywords: fractional evolution equations; well-posedness; averaging principle; stability and synchronization; controllability; numerical analysis and computation
(This special issue belongs to the Section General Mathematics, Analysis)
Fractal Analysis in Pharmacology: Theory and Application
edited by Elena Simona Bacaita and
submission deadline 31 Jan 2027 | Viewed by 3 | Submission Open
Keywords: fractal analysis; pharmacological systems; drug delivery; multiscale modeling; complex systems; release kinetics; degradation processes
(This special issue belongs to the Section Life Science, Biophysics)
Efficient Development of Geo-Energy and Carbon Sequestration in Fractal Geo-Systems: New Challenges, 2nd Edition
edited by Zhongwei Wu, Chuanzhi Cui and
submission deadline 15 Feb 2027 | Viewed by 99 | Submission Open
Keywords: geo-energy development; fractal geometry; CCUS/CCS; data analysis technology; production enhancement technologies; multi-phase flow discipline; water– rock reaction in fractal systems
(This special issue belongs to the Section Engineering)
Interplay Between Fixed Point Theory and Fractional Differential Equations: Methods and Applications submission deadline 25 Feb 2027 | Viewed by 121 | Submission Open
Keywords: fractional differential equations; fixed point methods; boundary value problems; generalized fractional operators; approximation methods; stability and controllability
(This special issue belongs to the Section General Mathematics, Analysis)
Fractal Dimension Analysis in Brain Function: From Basic Mechanisms to Clinical Frontiers
edited by
submission deadline 28 Feb 2027 | 3 articles | Viewed by 2695 | Submission Open
Keywords: innovative methods for FD extraction and analysis in neural signals; FD-driven improvements in BCI design and decoding strategies; personalised neuromodulation by tailoring NIBS interventions using FD metrics; FD as a non-invasive biomarker for early diagnosis and monitoring of neurological and psychiatric disorders; multimodal and cross-modal applications combining FD with EEG; MEG; fMRI; and TMS; new theoretical frameworks linking brain criticality; fractal geometry; and functional connectivity
(This special issue belongs to the Section Life Science, Biophysics)
Advances in Fractional-Order Chaotic and Complex Systems, Second Edition
edited by and
submission deadline 28 Feb 2027 | 1 articles | Viewed by 569 | Submission Open
Keywords: fractional-order theory; fractional-order systems; complex systems; chaos; chaotic systems; chaos applications; non-linear systems; neural networks
(This special issue belongs to the Section Complexity)
Fractal Dynamics in High-Order Iterative Methods
edited by Younghee Geum and
submission deadline 28 Feb 2027 | Viewed by 201 | Submission Open
Keywords: nonlinear equation; higher-order convergence; parameter space; dynamical plane; multiple-root finder
(This special issue belongs to the Section Numerical and Computational Methods)
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