Obituary: G. K. Green

Goodbye Ted (An Obituary for Edward G. Jones)

the discipline, characterized by the use of axonal transport tracers. He became a true master of electron microscopy and of the immunocytochemical techniques required to visualize neurotransmitters and their receptors, and moved on to new techniques to study the expression of specific genes and transcription factors. Ted was always capable of using the newest tools to study his two preferred br...

Obituary

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...

Quotient G-systems and Green\'s Relations

In this paper, we first introduce the concepts of G-systems, quotient G-systems and isomorphism theorems on G-systems of n-ary semihypergroups . Also we consider the Green's equivalences on G-systems and further in-vestigate some of their properties. A number of n-ary semihypergroups are constructed and presented as examples in this paper.

Obituary Notice

Mrs. Meiklejohn, of St. Paul's, Upper Maze M, Ston January 29th. Her life was spent for the weitare ? many parents could testify to the devotion w i ^ defective children, and She was the first to realise the special _n country. For many years she she opened the first home for such children in defective children, and of was the Principal of this home, and of a home 10 wQmen> another home for dif...