Neena Gupta

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20232026

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math.AC2026

A note on double Danielewski surfaces

Neena Gupta, Sourav Sen

In this note we rectify the proof of Theorem 3.11 in [arXiv:2403.02876]. We also present a set of examples at the end discussing various cases.

math.AC2023

Retracts of Laurent polynomial rings

Neena Gupta, Takanori Nagamine

Let $R$ be an integral domain and $B = R [x_{1}, \dots, x_{n}]$ be the polynomial ring. In this paper, we consider retracts of $B [1/ M]$ for a monomial $M$ . We show that (1) if $M=\prod_{i=…