Frontiers of Combinatorics & Number Theory

Restricted Eisenstein Series & Certain Convolution Sums; The Number of Nonzero Binomial Coefficients Modulo p(a); Symmetry Sets, Approximate Groups; Extreme values of the Dedekind Function; Partitions with Prescribed Hooksets; Turan's Problem for Trees; Zeros of the Hurwitz Zeta Function in the Interval (0,1); Prime Factorization Conditions Providing Multiplicities in Coset Partitions of Groups; Pairs of Additive Forms of Degrees 2.3 & 4.5 ; Mean Value Formulas for Twisted Edwards Curves; Binary Matrices as Morphisms of a Triangular Category; Some Diophantine Triples & Quadruples for Quadratic Polynomials; Edge Maximal Graph without Wk graphs, k=5,6; Nonextensibility of the pair {1,3} to a Diophantine Quintuple in Z[ -2]; On the Number of Representations of A Positive Integer By Certain Quadratic Forms In Twelve Variables; Codes Associated with Orthogonal Groups; Combinatorial Sums & Series Involving Inverses of the Gaussian Binomial Coefficients; Full Friendly Index Sets & Full Product-cordial Index Sets of Twisted Cylinders; Properly Charged Coloring of Two-Dimensional Arrays; Index.