Charles Singer (1876-1960)

Illustrations from the Wellcome Institute Library. Charles Joseph Singer, DM, DLitt, DSc, FRCP (1876-1960): papers in the Contemporary Medical Archives Centre.

In 1919, Charles Singer wrote that "England is almost the only country where there is no adequate provision for the teaching of medical history". What was needed, he continued was the creation oftwo or three chairs "to be held by men who would devote their lives to the task of setting forth the history of medicine as a continuous whole."'I Further, a specialist institute should be established, ...

Wolf Singer

Nilpotent Singer Groups

Let N be a nilpotent group normal in a group G. Suppose that G acts transitively upon the points of a finite non-Desarguesian projective plane P. We prove that, if P has square order, then N must act semi-regularly on P. In addition we prove that if a finite non-Desarguesian projective plane P admits more than one nilpotent group which is regular on the points of P then P has non-square order a...

The Kadison-Singer Conjecture

We are given a large integer N , and a fixed basis {ei : 1 ≤ i ≤ N} for the space H = C . We are also given an N -by-N matrix H that has all its diagonal entries zero, and has norm one. If σ ⊆ {1, 2, . . . , N}, let Pσ be the projection onto the space Hσ := ∨{ei : i ∈ σ}. Call such a projection basic, and the range of a basic projection a basic subspace. For each constant 0 < γ < 1, we want to ...

Alfred Newton Richards 1876-1966.