242 citations
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Showing 2009Show all
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math.AC2009
A Note on the Buchsbaum-Rim multiplicity of a parameter module
Futoshi Hayasaka, Eero Hyry
In this article we prove that the Buchsbaum-Rim multiplicity of a parameter module in a free module is bounded above by the colength . Moreover, w…
physics.soc-ph2009★ 242 cited
Introduction of Frictional and Turning Function for Pedestrian Outflow with an Obstacle
Daichi Yanagisawa, Ayako Kimura, Akiyasu Tomoeda +4
In this paper, two important factors which affect the pedestrian outflow at a bottleneck significantly are studied in detail to analyze the effect of an obstacle set up in front of…
math.AC2009★ 1 cited
Multigraded rings, diagonal subalgebras, and rational singularities
Kazuhiko Kurano, Ei-ichi Sato, Anurag K. Singh +1
We study the properties of F-rationality and F-regularity in multigraded rings and their diagonal subalgebras. The main focus is on diagonal subalgebras of bigraded rings: these co…