In this paper we introduce some polyhedra in Grassman manifolds which we call Grassmannian
simplices. We study two aspects of these polyhedra: their combinatorial structure (…

Our object is to prove the existence of Chern classes for possibly singular complex algebraic
varieties, which was conjectured by Deligne and Grothendieck [2]. These are homology …

This paper is a continuation of [GM] which was published in the same journal. We will explore
a remarkable connection between the geometry of the Schubert cells in the Grassmann …

Cellular structures or tessellations are ubiquitous in nature. Metals and ceramics commonly
consist of space-filling arrays of single-crystal grains separated by a network of grain …

Pain management has become an increasingly well researched area in medicine over
recent years, and there have been advances in a number of areas. While opioids remain an …

A method of analysis of uniform random number generators is developed, applicable to
almost all practical methods of generation. The method is that of Fourier analysis of the output …

The range of drugs available to provide anesthesia for patients undergoing electroconvulsive
therapy (ECT) is ever increasing. Initially, anesthetic agents were selected on the basis of …

In a previous paper, the authors described a simulation method for the evolution of two-dimensional
cellular structures by curvature flow that satisfied the von Neumann–Mullins relation …

Many physical systems can be modeled as large sets of domains “glued” together along
boundaries—biological cells meet along cell membranes, soap bubbles meet along thin films, …

A COMBINATORIAL FORMULA FOR THE PONTRJAGIN CLASSES Page 1 BULLETIN (New
Series) OF THE AMERICAN MATHEMATICAL SOCIETY Volume 26, Number 2, April 1992 …