W. James Lyons

James W. Valentine

Jim Valentine went to college on the GI Bill (a WWII veterans privilege) and has been there ever since; at present he is Professor of Integrative Biology, Emeritus, at UC Berkeley. His early research was on what is now called macroecology, working with fossil marine faunas, leading to a book, Evolutionary Paleoecology of the Marine Biosphere. Those studies continue today, chiefly with colleague...

Book Review: The Teaching Gap by James W. Stigler and James Hiebert

CJ 2000-Lyons (vol. 1)

The underlying thesis of this paper is that crime control policy is politically constructed. In developing our thesis and its implications, we depart from much of the conventional wisdom in three basic ways. First, in demonstrating the political derivations of crime control policy we reveal how, why, and to what extent criminological knowledge is marginalized in the policymaking process. Second...

A Kusuoka-Lyons-Victoir particle filter

The aim of this paper is to introduce a new numerical algorithm for solving the continuous time non-linear filtering problem. In particular, we present a particle filter that combines the Kusuoka-Lyons-Victoir cubature method on Wiener space (KLV) [13], [18] to approximate the law of the signal with a minimal variance ”thining” method, called the tree based branching algorithm (TBBA) to keep th...

The Uniqueness of Groups of Lyons Type

We give the first computer free proof of the uniqueness of groups of type Ly. We also show that certain simpicial complexes associated to the Lyons group Ly have the same homotopy type as the Quillen complex for Ly at the prime 3; we show this complex is simply connected, and we calculate its homology. Finally we supply simplified proofs of some properties of groups of type Ly, such as the grou...