Professor Michael Simpson

Obituary: Professor Michael Argyle

Michael Argyle, who died aged 77 on September 6th, was one of the handful of British psychologists to have gained an international reputation. He was a pioneer in the scientific study of social behaviour. His research on interviews and conversations established that nonverbal rather than verbal communication dictate the impressions people make on others. So much is the primacy of ‘‘body languag...

Steve Simpson

Steve Simpson was born and grew up in Australia. After completing his undergraduate degree at the University of Queensland, he travelled to London where he undertook his PhD on locust feeding physiology. Steve then spent 22 years in Oxford, fi rst in Experimental Psychology and then in the Department of Zoology and the Natural History Museum, before being enticed back to Australia in 2005. Toge...

The Vet Education Webinar Series 2015 “ Canine Vaccination ! ” With Professor Michael Day

Channing and Simpson in Edinburgh

In August of 1852 Dr. Walter Channing, professor of obstetrics and medical jurisprudence at Harvard Medical School, was about to finish an extensive tour of Europe, having left Boston early in May of that year. He was sixtysix at the time, and almost a half century had passed since his previous trip to that continent where as a medical student he studied in Edinburgh and London. The trip had ta...

On the Deligne-Simpson problem

The Deligne-Simpson problem is formulated like this: give necessary and sufficient conditions for the choice of the conjugacy classes Cj ⊂ SL(n,C) or cj ⊂ sl(n,C) so that there exist irreducible (p + 1)-tuples of matrices Mj ∈ Cj or Aj ∈ cj satisfying the equality M1 . . .Mp+1 = I or A1 + . . .+Ap+1 = 0. We solve the problem for generic eigenvalues with the exception of the case of matrices Mj ...