1. High-Order Methods for Systems of Fractional Ordinary Differential Equations and Their Application to Time-Fractional Diffusion Equations

   • Luís L. Ferrás
   • Neville Ford
   • Magda Rebelo

   OriginalPaper 16 January 2020 Pages: 535 - 551

2. Geometry of the Hough Transforms with Applications to Synthetic Data

   • M. C. Beltrametti
   • C. Campi
   • M. Torrente

   OriginalPaper 24 March 2020 Pages: 553 - 575

   

3. The Absent-Minded Passengers Problem: A Motivating Challenge Solved by Computer Algebra

   • Carsten Schneider

   OriginalPaper Open access 09 August 2020 Pages: 577 - 588

   

4. Common Factors in Fraction-Free Matrix Decompositions

   • Johannes Middeke
   • David J. Jeffrey
   • Christoph Koutschan

   OriginalPaper Open access 26 November 2020 Pages: 589 - 608

   

5. Compositional Properties of Alignments

   • Sarah J. Berkemer
   • Christian Höner zu Siederdissen
   • Peter F. Stadler

   OriginalPaper Open access 28 December 2020 Pages: 609 - 630

   

6. A Mechanical Geometer

   • Francisco Botana
   • Zoltán Kovács
   • Tomás Recio

   OriginalPaper 20 November 2020 Pages: 631 - 641

   

7. Heat Kernel Analysis of Syntactic Structures

   • Andrew Ortegaray
   • Robert C. Berwick
   • Matilde Marcolli

   OriginalPaper 24 February 2021 Pages: 643 - 660

   

8. Self-Paced, Instructor-Assisted Approach to Teaching Linear Algebra

   • Pavel Solin

   OriginalPaper 27 February 2021 Pages: 661 - 687

   

9. Using Fractals and Turtle Geometry to Visually Explain the Spread of a Virus to Kids: A STEM Multitarget Activity

   • Eugenio Roanes-Lozano
   • Carmen Solano-Macías

   OriginalPaper 05 March 2021 Pages: 689 - 699

   

10. Counting Lattice Points on Bargraphs of Catalan Words

    • Toufik Mansour
    • José L. Ramírez
    • Diana A. Toquica

    OriginalPaper 23 February 2021 Pages: 701 - 713

    

11. Factorials Experiments, Covering Arrays, and Combinatorial Testing

    • Raghu N. Kacker
    • D. Richard Kuhn
    • Dimitris E. Simos

    OriginalPaper 12 April 2021 Pages: 715 - 739

12. Correction to: Factorials Experiments, Covering Arrays, and Combinatorial Testing

    • Raghu N. Kacker
    • D. Richard Kuhn
    • Dimitris E. Simos

    Correction 10 May 2021 Pages: 741 - 741

13. Linear k-arboricity of Caylay Graphs on Abelian Groups with Given Degree

    • Nan Jia
    • Yaping Mao
    • Eddie Cheng

    OriginalPaper 16 April 2021 Pages: 743 - 755

    

14. Envelopes and Offsets of Two Algebraic Plane Curves: Exploration of Their Similarities and Differences

    • Thierry Dana-Picard

    OriginalPaper 08 April 2021 Pages: 757 - 774

    

15. XaoS 4.0 and Beyond: Fractals in Mathematics Education

    • Anurag Aggarwal
    • Zoltán Kovács
    • Jonathan Wolfe

    OriginalPaper 09 April 2021 Pages: 775 - 788

    

16. Two almost-circles, and two real ones

    • Zoltán Kovács

    OriginalPaper 26 March 2021 Pages: 789 - 801

    

17. Phylogenetics of Indo-European Language Families via an Algebro-Geometric Analysis of Their Syntactic Structures

    • Kevin Shu
    • Andrew Ortegaray
    • Matilde Marcolli

    OriginalPaper 15 April 2021 Pages: 803 - 857

    

18. Computing the Topology of Voronoï Diagrams of Parallel Half-Lines

    • Ibrahim Adamou
    • Bernard Mourrain

    OriginalPaper 12 April 2021 Pages: 859 - 876

    

19. Mathematical Multidimensional Modelling and Structural Artificial Intelligence Pipelines Provide Insights for the Designing of Highly Specific AntiSARS-CoV2 Agents

    • Dimitrios Vlachakis
    • Panayiotis Vlamos

    OriginalPaper 16 June 2021 Pages: 877 - 888

20. On Column-Convex and Convex Carlitz Polyominoes

    • Toufik Mansour
    • Reza Rastegar
    • Armend Sh. Shabani

    OriginalPaper 04 September 2021 Pages: 889 - 898