Professor K. G. Ramanathan (1920-1992)

Professor G. R. Hargreaves

Professor G. Leitmann on for 85th Birthday

George Leitmann was born in Vienna, Austria on May 24, 1925. He emigrated, with his mother and two grandmothers, to the USA in 1940. Leitmann entered a technical high school in New York from which he graduated in 1943. Immediately after graduation he joined the US army and served in the reconnaissance unit of a Combat Engineer Battalion in France in 1944-45. For his role in the battle for Colma...

Remembrances of Professor G . N . Ramachandran

Knots with g(E(K)) = 2 and g(E(K#K#K)) = 6 and Morimoto’s Conjecture

We show that there exist knots K ⊂ S with g(E(K)) = 2 and g(E(K#K#K)) = 6. Together with [5, Theorem 1.5], this proves existence of counterexamples to Morimoto’s Conjecture [10]. This is a special case of [6]. Let Ki (i = 1, 2) be knots in the 3-sphere S, and let K1#K2 be their connected sum. We use the notation t(·), E(·), and g(·) to denote tunnel number, exterior, and Heegaard genus respecti...

$ast$-K-g-Frames in Hilbert $mathcal{A}$-modules

In this paper, we introduce the concepts of $ast$-K-g-Frames in Hilbert $mathcal{A}$-modules and we establish some results.