P.M.S. Sai Krishna

collaborators

Showing math.ACShow all

3 papers · 1 filter

math.AC2025

A note on $G_{a}$ -actions in positive characteristic

P M S Sai Krishna

Miyanishi proved that the ring of invariants of any $G_{a}$ action on $A^{3}$ is $A^{2}$ , when the field $k$ has zero characteristic. However, it is not known…

math.AC2024

Rigidity and triangularity of an exponential map

P. M. S. Sai Krishna

Let $k$ be a field of arbitrary characteristic, $A$ be a domain and $K = frac (A)$ . Then (1) All exponential maps of $k^{[3]}$ are rigid, and we give a necessary and sufficie…

math.AC2024

An Algebraic characterization of the affine three space in arbitrary characteristic

P. M. S. Sai Krishna

We give an algebraic characterization of the affine $3$ -space over an algebraically closed field of arbitrary characteristic. We use this characterization to reformulate the follow…

A note on Ga​-actions in positive characteristic

Rigidity and triangularity of an exponential map

An Algebraic characterization of the affine three space in arbitrary characteristic

A note on $G_{a}$ -actions in positive characteristic