Vol. 13, No. 2, 2020

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ISSN (electronic): 1944-4184
ISSN (print): 1944-4176
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Vol. 13, No. 2, 2020

Arithmetic functions of higher-order primes

Kyle Czarnecki and Andrew Giddings

Spherical half-designs of high order

Daniel Hughes and Shayne Waldron

A series of series topologies on $\mathbb{N}$

Jason DeVito and Zachary Parker

Discrete Morse functions, vector fields, and homological sequences on trees

Ian Rand and Nicholas A. Scoville

An explicit third-order one-step method for autonomous scalar initial value problems of first order based on quadratic Taylor approximation

Thomas Krainer and Chenzhang Zhou

New generalized secret-sharing schemes with points on a hyperplane using a Wronskian matrix

Weston Loucks and Bahattin Yildiz

Generalized Cantor functions: random function iteration

Jordan Armstrong and Lisbeth Schaubroeck

Numerical semigroup tree of multiplicities 4 and 5

Abby Greco, Jesse Lansford and Michael Steward

Enumerating diagonalizable matrices over $\mathbb{Z}_{p^k}$

Catherine Falvey, Heewon Hah, William Sheppard, Brian Sittinger and Rico Vicente

On arithmetical structures on complete graphs

Zachary Harris and Joel Louwsma

Connectedness of digraphs from quadratic polynomials

Siji Chen and Sheng Chen