Issue 93

March 23 - 26, 2025, High-Performance Rowing Centre (Centro de Alto Rendimento de Remo), Pocinho, Portugal

Preface

[B93a] Hartosh Singh Bal and Gaurav Bhatnagar

An Easy Proof of Ramanujan's Famous Congruences p(5m+4) ≡ 0 ≡ τ(5m+5) (mod 5) (4 pp.)

[B93b] Dimbiniaina Ratovilebamboavison, Mamy Laingo Nomenjanahary Rakotoarison and Fanja Rakotondrajao

Factorial Euler-Seidel matrix: Refinement and q-analogue (15 pp.)

[B93c] Adrián Celestino and Frédéric Patras

A forest formula for pre-Lie exponentials, Magnus operator and cumulant-cumulant relations (37 pp.)

[B93d] Jyotirmoy Ganguly and Rohit Joshi

Divisibility of Character Values of Representations of Coxeter Groups (18 pp.)