On extensions of hook Weyl modules

Abstract: We determine the integral extension groups

E x t^{1} (D e l t a (h), D e l t a (h (k)))

and

E x t^{k} (D e l t a (h), D e l t a (h (k)))

, where

D e l t a (h), D e l t a (h (k))

are the Weyl modules of the general linear group

G L_{n}

corresponding to the hook partitions

h = (a, 1^{b})

,

h (k) = (a + k, 1^{b - k})

.

This page was built for publication: On extensions of hook Weyl modules