Nelson Spencer (1918–2002)

Kerry Spencer

The fall of tsarism in Russia in 1917 was the culmination of many factors. It is perhaps widely noted that Nicholas II was not suited to his role as Tsar, mainly due to his character and personality. Resentment of his wife and her involvement with the mystical Rasputin was also widespread and helped contribute to the collapse of the monarchy. Also the state of the country during World War One l...

Spencer-Attix Cavity Theory

2 Spencer Bloch And

Let X be a smooth, projective algebraic variety over an algebraically closed field k, and let H(X) denote a Weil cohomology theory. The existence of algebraic cycles on X×X inducing as correspondences the various Künneth projectors π : H(X) → H (X) is one of the standard conjectures of Grothendieck, [8], [9]. It is known in general only for the cases i = 0, 1, 2d − 1, 2d where d = dimX. The pur...

Genetics: Nelson and Lederberg

* Th(e work reporte(I in this article( was carried( out und(ler Contract No. AT-(30-1)-1151, United St at4s Atomiic Energy Conimnissioi. S. Wright and Th. Dohzhansky, Genetics, 31, 125-156, 1946. 2 E. Spiess, Evolution, 4, 14-33, 1950. 3 A. B. Da Cunha, Evolution, 5, 395-404, 1951. 4Th. Dobzhansky and 0. Pavlovsky, Evolution, 7, 198-210, 1953. 5 H. Levene, 0. Pavlovsky, and Th. Dobzhansky, Evol...

Aristotle and George Spencer-Brown

The paper deals with Aristotelian logic as the special case of more general epistemology and sociology of both science and common sense. The Aristotelian principles of identity, of noncontradiction, and of excluded middle are to be supplemented by the secondorder cybernetic, or "cybernethic" principles of paradox, of ambivalence, and of control. In this paper we collect some ideas on how to eva...