Thursday, December 12 2019
15:30 - 16:30

Alladi Ramakrishnan Hall

Classification of obstructed bundles over a very general sextic surface using Alexander-Hirschowitz Theorem and Mestrano-Simpson Conjecture

Sarbeswar Pal,


Let $S$ be a very general sextic surface over complex numbers.
Let $\mathcal{M}(H, c_2)$ be the moduli space of rank $2$ stable bundles
on $S$ with fixed first Chern class $H$ and second Chern class $c_2$. In
this talk we will introduce a new approach using Alexander-Hirschowitz
Theorem to give a bound of the space of obstructions of a point $E \in
\mathcal{M}(H, c_2)$ and we will apply this to proof Mestrano -Simpson
conjecture on number of irreducible components of $\mathcal{M}(H, 11)$.

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