Louis Dumont (1911-1998)

Dr R. A. Gordon 1911-1998.

Gustave Malécot, 1911-1998. Population genetics founding father.

IN November 1998 we lost one of the most important cot completed his mathematics degree at the École Normale Superieure in Paris (Nagylaki 1989). Malécot scientists of this century, Gustave Malécot. He was, in the best sense of the words, a great man. His contributold me how he had spent 2 years reading and mastering (no doubt in rigorous mathematical detail) Fisher’s artitions to science and m...

Restricted 132-Dumont permutations

A permutation π is said to be a Dumont permutation of the first kind if each even integer in π must be followed by a smaller integer, and each odd integer is either followed by a larger integer or is the last element of π (see, for example, www.theory.csc.uvic.ca/∼cos/inf/perm/Genocchi Info.html). In Duke Math. J. 41 (1974), 305–318, Dumont showed that certain classes of permutations on n lette...

Restricted Dumont permutations

We analyze the structure and enumerate Dumont permutations of the first and second kinds avoiding certain patterns or sets of patterns of length 3 and 4. Some cardinalities are given by Catalan numbers, powers of 2, little Schröder numbers, and other known or related sequences.

Maclyn McCarty (1911–2005)

The editorial board lost a real soul mate when Maclyn McCarty passed away on January 2nd at age 93. While attending the theater with friends, one of the many activities that he enjoyed, he collapsed. “Dr. Mac” was revered worldwide for his remarkable experiments that led to the identification of DNA as the genetic material. This totally unanticipated discovery, and the revolutionary 1944 paper ...