R. E. Beard: 11th January 1911–7th November 1983

Walter Pagel (12 November 1898 to 25 March 1983).

Walter Pagel was born in Berlin, the son of Julius Leopold Pagel, the well-known medical historian, who contributed numerous articles to August Hirsch's Biographisches Lexikon der hervorragenden A erzte and who put the study of medieval anatomy and surgery on the map. After a classical philological education, Walter Pagel graduated in medicine in Berlin in 1922. After posts in the Pathology Dep...

TINS -January 1983 Hermann Helmholtz and origins of sensory physiology

The role of great men, according to the historian Burckhardt, is to pry loose the collective thinking from empty chatter and repetition of outmoded viewpoints. Medical science in central Europe in the middle of the last century was ready for great men. For while the Enlightenment and the Napoleonic era had cleared centuries of political and intellectual cobwebs, restorative forces had made sign...

[93] Tarjan, R. E. (1983). Data Structures and Network Algorithms. SIAM.

Solution of large, sparse linear systems is an important problem in science and engineering. Such systemsarise in many applications, such as electrical networks, stress analysis, and more generally, in the numeri-cal solution of partial differential equations. When the coefficient matrices associated with these linearsystems are symmetric and positive definite, the systems are often...

INS - R 0023 November 30 , 2000

SEN - R 9801 January 31 , 1998

We present a survey of connuence properties of (acyclic) term graph rewriting. Results and counterexamples are given for diierent kinds of term graph rewriting: besides plain applications of rewrite rules, extensions with the operations of collapsing and copying, and with both operations together are considered. Collapsing and copying together constitute bisimilarity of term graphs. We establis...