K. S. Raghava

works on

cubic near-misses 1 diophantine equations 1 elliptic curves 1 k3 surfaces 1 pell equations 1

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math.GM2026

A Ramanujan Pell Elliptic K3 Surface and Primitive Five-Cube Near Misses

K. Srinivasa Raghava

The paper constructs a trace‑16 Ramanujan–Pell family of primitive five‑cube near‑misses using quadratic form identities and Pell equations, and shows that the associated Mordell c…

math.GM2026

Boolean Walsh Eta Units and Eisenstein Bases For Squarefree Levels

K. Srinivasa Raghava

Let $M > 1$ be squarefree and let $D (M)$ be its Boolean divisor cube. To each Boolean character $I ¨ _{T}$ we attach the eta-quotient \[ R_T^{(M)}(Ï)=\prod_{d\mid M}Î·(dÏ)^{Ï_T(d)}, \…