Prof. N. V. Nassonov

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...

Prof. Sir Ravindra N Maini.

P Ravinder Maini was born on 17 th N o v e m b e r 1 9 3 7 i n Lu d h i a n a w h e r e h i s maternal grandparents resided. His paternal g r a n d p a r e n t s h a d migrated to Nairobi , Kenya, at the end of 19th century. His grandfather wa s a b u s i n e s s m a n . Maini’s father, Sir Amar N a t h , h a d q u a l i f i e d as a barrister with a graduate degree from t h e L o n d o n S c h...

$n$-cocoherent rings‎, ‎$n$-cosemihereditary rings and $n$-V-rings

 Let $R$ be a ring‎, ‎and let $n‎, ‎d$ be non-negative integers‎. ‎A right $R$-module $M$ is called $(n‎, ‎d)$-projective if $Ext^{d+1}_R(M‎, ‎A)=0$ for every $n$-copresented right $R$-module $A$‎. ‎$R$ is called right $n$-cocoherent if every $n$-copresented right $R$-module is $(n+1)$-coprese-nted‎, ‎it is called a right co-$(n,d)$-ring if every right $R$-module is $(n‎, ‎d)$-projective‎. ‎$R$...

Prof. Dr. Prof. Prof.

$n$-cocoherent rings‎, ‎$n$-cosemihereditary rings and $n$-v-rings

let $r$ be a ring‎, ‎and let $n‎, ‎d$ be non-negative integers‎. ‎a right $r$-module $m$ is called $(n‎, ‎d)$-projective if $ext^{d+1}_r(m‎, ‎a)=0$ for every $n$-copresented right $r$-module $a$‎. ‎$r$ is called right $n$-cocoherent if every $n$-copresented right $r$-module is $(n+1)$-coprese-nted‎, ‎it is called a right co-$(n,d)$-ring if every right $r$-module is $(n‎, ‎d)$-projective‎. ‎$r$ ...