Date & Time: Monday, August 10, 2015, 14:15-15:15

Venue: Ramanujan Hall

Title: Normality of Amit Roy's group of elementary orthogonal transformations

Speaker: Ravi Rao, TIFR Mumbai

Abstract: Let $(Q, q)$ be a inner product space over a commutative ring $R$, and consider the Dickson-Siegel-Eichler-Roy's subgroup of the orthogonal group $O_R(Q \perp H(R)^n)$, $n \geq 1$. We show that it is a normal subgroup of $O_R(Q \perp H(R)^n)$, for all $n$, except when $n = 2$. This is a joint work with A.A. Ambily.