J. Das Gupta

activity

20202026

collaborators

4 papers

math.AG2026

Equality and iso-duality of Generalized Geometric Goppa codes

Jyoti Dasgupta, Nupur Patanker

Geometric Goppa codes are constructed by evaluating elements of an algebraic function field at the places of degree one. Extending this, generalized geometric Goppa codes were defi…

math.AG2022

Logarithmic connections on principal bundles over normal varieties

Jyoti Dasgupta, Bivas Khan, Mainak Poddar

Let $X$ be a normal projective variety over an algebraically closed field of characteristic zero. Let $D$ be a reduced Weil divisor on $X$ . Let $G$ be a reductive linear algebraic…

math.AG2020

Classification, reduction and stability of toric principal bundles

Jyoti Dasgupta, Bivas Khan, Indranil Biswas +2

Let $X$ be a complex toric variety equipped with the action of an algebraic torus $T$ , and let $G$ be a complex linear algebraic group. We classify all $T$ -equivariant principal $G…

math.AG2020

Seshadri constants on Bott towers

Indranil Biswas, Jyoti Dasgupta, Krishna Hanumanthu +1

For a positive integer $n$ , let $X_{n} \to X_{n - 1} \to \dots \to X_{2} \to X_{1} \to X_{0}$ be a Bott tower of height $n$ , and let $L$ be a nef line bundle on $X_{n}$ . We compute Seshadri c…