All Stories

  1. A generalized Caputo fractional jerk equation with Caputo antiperiodic boundary conditions: Existence of solutions, stability and numerical simulations

    Article • Mathematics and Computers in Simulation, July 2026, Elsevier

    Sandra Pinelas

  2. Existence and Compactness of the Solution Set for a Coupled Caputo Fractional System with ϕ-Laplacian Operators and Nonlocal Boundary Conditions

    Article • Mathematics, March 2026, MDPI AG

    Sandra Pinelas

  3. On the Ulam-type stability of higher-order iterative Volterra integro-delay differential equations

    Article • AIMS Mathematics, January 2026, Tsinghua University Press

    Sandra Pinelas

  4. Existence and Stabilization for Impulsive Integro‐Differential Equations of Second‐Order With Multiple Kernels and Delays

    Article • Mathematical Methods in the Applied Sciences, August 2025, Wiley

    Sandra Pinelas

  5. A COUPLED NONLINEAR SYSTEM OF INTEGRO-DIFFERENTIAL EQUATIONS USING MODIFIED ABC OPERATOR

    Article • Fractals, March 2025, World Scientific Pub Co Pte Lt

    Prof Jehad Alzabut, Sandra Pinelas

  6. Existence of Solutions to the Variable Order Caputo Fractional Thermistor Problem

    Article • Fractal and Fractional, February 2025, MDPI AG

    Sandra Pinelas

  7. Solvability of Boundary Value Problems for Differential Equations Combining Ordinary and Fractional Derivatives of Non-Autonomous Variable Order

    Article • Symmetry, January 2025, MDPI AG

    Sandra Pinelas

  8. Affine Type Aq Functional Equation In Various Banach Spaces

    Article • July 2024, MDPI AG

    Sandra Pinelas

  9. Stability Analysis of Differential Equations Using Mohand Integral Transform

    Article • January 2024, Springer Science + Business Media

    Sandra Pinelas

  10. On the solution of T−controllable abstract fractional differential equations with impulsive effects

    Article • Cubo (Temuco), December 2023, Universidad de La Frontera

    Sandra Pinelas

  11. Existence and Stability of Ulam–Hyers for Neutral Stochastic Functional Differential Equations

    Article • Bulletin of the Iranian Mathematical Society, December 2023, Springer Science + Business Media

    Sandra Pinelas

  12. Ulam–Hyers Stability of Linear Differential Equation with General Transform

    Article • Symmetry, November 2023, MDPI AG

    Sandra Pinelas

  13. Bounded Inverse-Slashed Pareto Model: Structural Properties and Real-Life Applications

    Article • Advances in the Theory of Nonlinear Analysis and its Application, August 2023, Advances in the Theory of Nonlinear Analysis and its Application

    Sandra Pinelas

  14. On System of Variable Order Nonlinear p-Laplacian Fractional Differential Equations with Biological Application

    Article • Mathematics, April 2023, MDPI AG

    Prof Jehad Alzabut, Sandra Pinelas

  15. Laplace Transform of nested analytic functions via Bell’s polynomials

    Article • Advances in the Theory of Nonlinear Analysis and its Application, March 2023, Advances in the Theory of Nonlinear Analysis and its Application

    Sandra Pinelas

  16. An Interplay of Wigner–Ville Distribution and 2D Hyper-Complex Quadratic-Phase Fourier Transform

    Article • Fractal and Fractional, February 2023, MDPI AG

    Sandra Pinelas

  17. Uncertainty Principles for the Two-Sided Quaternion Windowed Quadratic-Phase Fourier Transform

    Article • Symmetry, December 2022, MDPI AG

    Sandra Pinelas

  18. Existence and uniqueness of solutions to higher order fractional partial differential equations with purely integral conditions

    Article • Analysis, October 2022, De Gruyter

    Sandra Pinelas

  19. On the stability and behavior of solutions in mixed differential equations with delays and advances

    Article • Mathematical Methods in the Applied Sciences, January 2022, Wiley

    Sandra Pinelas

  20. Preface of the “Symposium on Difference & Differential Equations with Applications”

    Article • January 2022, American Institute of Physics

    Sandra Pinelas

  21. New oscillation criteria for third-order differential equations with bounded and unbounded neutral coefficients

    Article • Electronic journal of qualitative theory of differential equations, January 2021, University of Szeged

    Sandra Pinelas

  22. Existence of nonoscillatory solutions to third order neutral type difference equations with delay and advanced arguments

    Article • September 2020, Institute of Mathematics, Czech Academy of Sciences

    Sandra Pinelas

  23. New Oscillation Criteria for Second Order Quasilinear Neutral Delay Differential Equations

    Article • Differential Equations and Dynamical Systems, August 2020, Springer Science + Business Media

    Sandra Pinelas

  24. Hyers-Ulam stability of an additive-quadratic functional equation

    Article • Cubo (Temuco), August 2020, Universidad de La Frontera

    Sandra Pinelas

  25. Hyers -Ulam stability of quadratic functional equation

    Article • Journal of Physics Conference Series, July 2020, Institute of Physics Publishing

    Sandra Pinelas

  26. Stability of an non-additive functional equation

    Article • Journal of Physics Conference Series, July 2020, Institute of Physics Publishing

    Sandra Pinelas

  27. Preface of the Symposium on Difference & Differential Equations with Applications

    Article • January 2020, American Institute of Physics

    Sandra Pinelas

  28. Initial data generating bounded solutions of a system of two linear discrete equations

    Article • January 2020, American Institute of Physics

    Sandra Pinelas

  29. Solution of a 3-D cubic functional equation and its stability

    Article • AIMS Mathematics, January 2020, American Institute of Mathematical Sciences (AIMS)

    Sandra Pinelas

  30. On oscillatory second-order nonlinear delay differential equations of neutral type

    Article • Open Journal of Mathematical Sciences, November 2019, Ptolemy Scientific Research Press

    Sandra Pinelas

  31. Nonlinear first-order forced differential equations with several delays of neutral type

    Article • Analysis, October 2019, De Gruyter

    Sandra Pinelas, Shyam Sundar Santra

  32. Solution and stability of an n-dimensional functional equation

    Article • Analysis, October 2019, De Gruyter

    Sandra Pinelas, DR. TAMILVANAN KANDHASAMY, Vediyappan Govindan

  33. On the behavior of the solutions for linear autonomous mixed type difference equation

    Article • Rendiconti del Circolo Matematico di Palermo Series 2, July 2019, Springer Science + Business Media

    Sandra Pinelas

  34. Higher Order Fibonacci Summation Formula with Extorial Functions

    Article • Journal of Computational Mathematica, June 2019, International Journal of Physical Education, Fitness and Sports

    Sandra Pinelas

  35. An n-dimensional cubic functional equation and its Hyers–Ulam stability

    Article • The Journal of Analysis, May 2019, Springer Science + Business Media

    Sandra Pinelas

  36. Asymptotic Properties of Solutions of Fourth-Order Delay Differential Dquations

    Article • Symmetry, May 2019, MDPI AG

    Sandra Pinelas

  37. Fractional frequency Laplace transform by inverse difference operator with shift value

    Article • Open Journal of Mathematical Sciences, April 2019, Ptolemy Scientific Research Press

    Sandra Pinelas

  38. The Third and Fourth Kind Pseudo-Chebyshev Polynomials of Half-Integer Degree

    Article • Symmetry, February 2019, MDPI AG

    Sandra Pinelas

  39. Stability of Pinelas-Septoicosic functional equation

    Article • Open Journal of Mathematical Sciences, February 2019, Ptolemy Scientific Research Press

    DR. TAMILVANAN KANDHASAMY, Sandra Pinelas

  40. Mathematical Analysis of a Prey–Predator System: An Adaptive Back-Stepping Control and Stochastic Approach

    Article • Mathematical and Computational Applications, February 2019, MDPI AG

    Sandra Pinelas

  41. Oscillation criteria for even order neutral difference equations

    Article • Opuscula Mathematica, January 2019, AGHU University of Science and Technology Press

    Sandra Pinelas

  42. On Sheffer polynomial families

    Article • 4open, January 2019, EDP Sciences

    Paolo Emilio Ricci, Sandra Pinelas

  43. Preface of Symposium on Difference & Differential Equations with Applications

    Article • January 2019, American Institute of Physics

    Sandra Pinelas

  44. Stability of an n-Dimensional Functional Equation in Banach Space and Fuzzy Normed Space

    Article • January 2019, Springer Science + Business Media

    DR. TAMILVANAN KANDHASAMY, Sandra Pinelas

  45. Fibonacci Sequence and its Sum by Second Order Difference Operator with Polynomial Factorial

    Article • Journal of Computational Mathematica, December 2018, International Journal of Physical Education, Fitness and Sports

    Sandra Pinelas

  46. Stability of a quartic functional equation

    Article • Journal of Fixed Point Theory and Applications, October 2018, Springer Science + Business Media

    Sandra Pinelas, DR. TAMILVANAN KANDHASAMY

  47. Discrete Heat Equation model of Rod by Partial Fibonacci Difference Operator with shift values

    Article • International Journal of Engineering & Technology, October 2018, Science Publishing Corporation

    Sandra Pinelas

  48. Oscillation of second order difference equation with several super-linear neutral terms

    Article • Advances in Difference Equations, September 2018, Springer Science + Business Media

    Sandra Pinelas

  49. Stability of Cubic Functional Equation in Random Normed Space

    Article • JOURNAL OF ADVANCES IN MATHEMATICS, August 2018, CIRWOLRD

    DR. TAMILVANAN KANDHASAMY, Sandra Pinelas

  50. New Type of Quadratic Functional Equation and Its Stability

    Article • International Journal of Mathematics Trends and Technology, August 2018, Seventh Sense Research Group Journals

    Sandra Pinelas

  51. Correction to: Oscillations of difference equations with several deviated arguments

    Article • Aequationes Mathematicae, July 2018, Springer Science + Business Media

    Sandra Pinelas

  52. Orthogonal stability of mixed type additive-cubic functional equations in multi-Banach spaces

    Article • Demonstratio Mathematica, May 2018, De Gruyter

    Sandra Pinelas

  53. Oscillation theorems for third order nonlinear delay difference equations

    Article • April 2018, Institute of Mathematics, Czech Academy of Sciences

    Sandra Pinelas

  54. Necessary and sufficient condition for oscillation of nonlinear neutral first-order differential equations with several delays

    Article • Journal of Fixed Point Theory and Applications, February 2018, Springer Science + Business Media

    Sandra Pinelas, Prof Jehad Alzabut

  55. Analytic Representation of Generalized Möbius-Listing’s Bodies and Classification of Links Appearing After Their Cut

    Article • January 2018, Springer Science + Business Media

    Sandra Pinelas

  56. Oscillation of Third Order Mixed Type Neutral Difference Equations

    Article • January 2018, Springer Science + Business Media

    Sandra Pinelas

  57. Stability of general quadratic

    Article • Malaya Journal of Matematik, January 2018, Malaya Journal of Matematik

    Sandra Pinelas

  58. Laplace - Fibonacci transform by the solution of second order generalized difference equation

    Article • Nonautonomous Dynamical Systems, August 2017, De Gruyter

    Sandra Pinelas

  59. Higher Order Fibonacci Sequence and Series by Generalized Higher Order Variable Co-Efficient Difference Operator

    Article • Journal of Computational Mathematica, June 2017, International Journal of Physical Education, Fitness and Sports

    Sandra Pinelas

  60. STABILITY OF TREDECIC FUNCTIONAL EQUATION IN MATRIX NORMED SPACES

    Article • JOURNAL OF ADVANCES IN MATHEMATICS, May 2017, CIRWOLRD

    Sandra Pinelas

  61. Ulam–Hyers stability of hexadecic functional equations in multi-Banach spaces

    Article • Analysis, January 2017, De Gruyter

    Sandra Pinelas

  62. Preface of the “Symposium on Difference & Differential Equations and Applications”

    Article • January 2017, American Institute of Physics

    Sandra Pinelas

  63. Oscillation of solutions to non-linear difference equations with several advanced arguments

    Article • Opuscula Mathematica, January 2017, AGHU University of Science and Technology Press

    Sandra Pinelas

  64. Oscillation properties for a scalar linear difference equation of mixed type

    Article • Mathematica Bohemica, May 2016, Institute of Mathematics, Czech Academy of Sciences

    Sandra Pinelas

  65. Interval oscillation criteria for second-order forced impulsive delay differential equations with damping term

    Article • SpringerPlus, May 2016, Springer Science + Business Media

    Sandra Pinelas

  66. General Solution and Stability of Quattuordecic Functional Equation in Quasi β-Normed Spaces

    Article • Advances in Pure Mathematics, January 2016, Scientific Research Publishing, Inc,

    Sandra Pinelas

  67. Oscillation theorems for second order difference equations woth negative neutral term

    Article • Tamkang Journal of Mathematics, December 2015, Tamkang Journal of Mathematics

    Sandra Pinelas

  68. Oscillation Criteria for the First-Order Linear Difference Equations with Several Delay Arguments

    Article • Journal of Mathematical Sciences, July 2015, Springer Science + Business Media

    Sandra Pinelas

  69. Oscillation results for difference equations with oscillating coefficients

    Article • Advances in Difference Equations, February 2015, Springer Science + Business Media

    Sandra Pinelas, Professor Emeritus Ioannis STAVROULAKIS

  70. Some New Oscillation Theorems for Second Order Difference Equations with Mixed Neutral Terms

    Article • British Journal of Mathematics & Computer Science, January 2015, Sciencedomain International

    Sandra Pinelas

  71. Oscillation theorems for second order nonlinear neutral difference equations

    Article • Journal of Inequalities and Applications, January 2014, Springer Science + Business Media

    Sandra Pinelas

  72. Oscillatory difference equations and moment problems

    Article • Advances in Difference Equations, January 2014, Springer Science + Business Media

    Sandra Pinelas

  73. Oscillations of difference equations with several deviated arguments

    Article • Aequationes Mathematicae, November 2013, Springer Science + Business Media

    Sandra Pinelas

  74. On oscillation of solutions of second-order nonlinear difference equations

    Article • Journal of Mathematical Sciences, February 2013, Springer Science + Business Media

    Sandra Pinelas

  75. Delay difference equations: Coexistence of oscillatory and nonoscillatory solutions

    Article • Analysis, January 2013, De Gruyter

    Sandra Pinelas

  76. Differential and Difference Equations with Applications

    Article • January 2013, Springer Science + Business Media

    Sandra Pinelas

  77. Classifications of solutions of second-order nonlinear neutral differential equations of mixed type

    Article • Advances in Difference Equations, January 2012, Springer Science + Business Media

    Sandra Pinelas

  78. Oscillation criteria for second-order nonlinear neutral difference equations of mixed type

    Article • Advances in Difference Equations, January 2012, Springer Science + Business Media

    Sandra Pinelas

  79. Oscillatory behaviour of odd order neutral delay dynamic equations on time-scales

    Article • International Journal of Dynamical Systems and Differential Equations, January 2012, Inderscience Publishers

    Sandra Pinelas

  80. Analytical and numerical treatment of oscillatory mixed differential equations with differentiable delays and advances

    Article • Journal of Computational and Applied Mathematics, July 2011, Elsevier

    Sandra Pinelas

  81. An Introduction to Complex Analysis

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  82. Analytic Continuation

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  83. Analytic Functions I

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  84. Analytic Functions II

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  85. Argument Principle and Rouché and Hurwitz Theorems

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  86. Behavior of Analytic Mappings

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  87. Bieberbach’s Conjecture

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  88. Cauchy-Goursat Theorem

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  89. Cauchy’s Integral Formula

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  90. Cauchy’s Integral Formula for Derivatives

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  91. Cauchy’s Residue Theorem

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  92. Complex Functions

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  93. Complex Integration

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  94. Complex Numbers I

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  95. Complex Numbers II

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  96. Complex Numbers III

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  97. Conformal Mappings

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  98. Contour Integrals Involving Multi-valued Functions

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  99. Curves, Contours, and Simply Connected Domains

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  100. Deformation Theorem

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  101. Elementary Functions I

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  102. Elementary Functions II

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  103. Evaluation of Real Integrals by Contour Integration I

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  104. Evaluation of Real Integrals by Contour Integration II

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  105. Harmonic Functions

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  106. History of Complex Numbers

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  107. Indented Contour Integrals

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  108. Independence of Path

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  109. Infinite Products

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  110. Julia and Mandelbrot Sets

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  111. Laurent’s Series

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  112. Mappings by Functions I

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  113. Mappings by Functions II

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  114. Maximum Modulus Principle

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  115. Mittag-Leffler Theorem

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  116. Oscillation Criteria for Second-Order Neutral Delay Dynamic Equations with Mixed Nonlinearities

    Article • Advances in Difference Equations, January 2011, Springer Science + Business Media

    Sandra Pinelas

  117. Periodic Functions

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  118. Power Series

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  119. Sequences and Series of Functions

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  120. Sequences and Series of Numbers

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  121. Set Theory in the Complex Plane

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  122. Singularities and Poles I

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  123. Singularities and Poles II

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  124. Summation of Series

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  125. Symmetry and Reflection

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  126. Taylor’s Series

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  127. The Fundamental Theorem of Algebra

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  128. The Riemann Surfaces

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  129. The Riemann Zeta Function

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  130. The Schwarz-Christoffel Transformation

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  131. Weierstrass’s Factorization Theorem

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  132. Zeros of Analytic Functions

    Article • January 2011, Springer Science + Business Media

    Sandra Pinelas

  133. Oscillatory Mixed Differential Difference Equations

    Article • November 2010, World Scientific Pub Co Pte Lt

    Sandra Pinelas

  134. Bounds for analytic solutions to integral equations in the complex domain

    Article • Applied Mathematics Letters, August 2010, Elsevier

    Sandra Pinelas

  135. Comparison and oscillatory behavior for certain second order nonlinear dynamic equations

    Article • Korean Journal of Computational & Applied Mathematics, January 2010, Springer Science + Business Media

    Sandra Pinelas

  136. Oscillatory Mixed Differential Systems

    Article • Funkcialaj Ekvacioj, January 2010, Division of Functional Equations, The Mathematical Society of Japan (JST)

    Sandra Pinelas

  137. Oscillatory Nonautonomous Lucas Sequences

    Article • International Journal of Differential Equations, January 2010, Hindawi Publishing Corporation

    Sandra Pinelas

  138. Nonautonomous oscillators and coefficient evaluation for orthogonal function systems

    Article • The Journal of Difference Equations and Applications, November 2009, Taylor & Francis

    Sandra Pinelas

  139. On nonoscillation of mixed advanced-delay differential equations with positive and negative coefficients

    Article • Computers & Mathematics with Applications, August 2009, Elsevier

    Sandra Pinelas

  140. Complementary Lidstone Interpolation and Boundary Value Problems

    Article • Journal of Inequalities and Applications, January 2009, Springer Science + Business Media

    Sandra Pinelas

  141. Oscillatory mixed difference systems

    Article • Advances in Difference Equations, January 2006, Springer Science + Business Media

    Sandra Pinelas

  142. Nonoscillations in retarded systems

    Article • Journal of Mathematical Analysis and Applications, August 2005, Elsevier

    Sandra Pinelas

  143. Oscillatory retarded functional systems

    Article • Journal of Mathematical Analysis and Applications, September 2003, Elsevier

    Sandra Pinelas