G. N. Ramachandran (1922–2001)

Remembrances of Professor G . N . Ramachandran

Remembrances of Professor G . N . Ramachandran ( 1922 – 2001

Editor’s note: Few scientists contribute an idea of such clarity and power that it appears in all the discipline’s textbooks and bears the author’s name. For the contribution to be relevant and universally employed almost forty years after it first appeared is even less common. Structural biology lost the author of such an idea with the death of G.N. Ramachandran, whose picture appears on the c...

On the Finite Groupoid G(n)

In this paper we study the existence of commuting regular elements, verifying the notion left (right) commuting regular elements and its properties in the groupoid G(n). Also we show that G(n) contains commuting regular subsemigroup and give a necessary and sufficient condition for the groupoid G(n) to be commuting regular.

Prof. v. Ramachandran

Dr. Ramachandran was born on 6th June 193 7. He had his medical education at Madras Medical College andpost graduate training (D.P.M. andM.D.) in Psychiatry atNIMHANS, Bangalore. He was awardedPfuD by the University of Madras and Fellowship by the Royal College of Psychiatrists, U.K. He was Consultant Psychiatrist at Institute of Mental Health and Additional Professor of Psychiatry at Madras Me...

N Average of g(n)

Let d n pn the n th prime for n and let dk n jdk n dk n j for k n A well known conjecture usually ascribed to Gilbreath but actually due to Proth in the th century says that dk for all k This paper reports on a computation that veri ed this conjecture for k It also discusses the evidence and the heuristics about this conjecture It is very likely that similar conjectures are also valid for many ...