Zobrazeno 1 - 10
of 75
pro vyhledávání: '"James B. Wilson"'
Publikováno v:
Bulletin of the London Mathematical Society. 54:213-232
For a finite group $G$, let $\sigma(G)$ be the number of subgroups of $G$ and $\sigma_\iota(G)$ the number of isomorphism types of subgroups of $G$. Let $L=L_r(p^e)$ denote a simple group of Lie type, rank $r$, over a field of order $p^e$ and charact
Publikováno v:
Transactions of the American Mathematical Society. 372:8067-8090
We present a new algorithm to decide isomorphism between finite graded algebras. For a broad class of nilpotent Lie algebras, we demonstrate that it runs in time polynomial in the order of the input algebras. We introduce heuristics that often dramat
Autor:
James B. Wilson
Publikováno v:
Theory of Computing. 15:1-25
Publikováno v:
Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 65:1087-1088
Autor:
Maggie P. Miller, Lorraine N. Margeson, James B. Wilson, Paul Hindsley, Don W. Margeson, Elizabeth A. Forys
Publikováno v:
Natural Areas Journal. 40
Fort De Soto Park (Pinellas County, Florida) encompasses several barrier islands and is accessible to the public by road. Over 32 ha of beach are closed to the general public to allow birds to nest, loaf, and forage without human disturbance. The obj
We introduce an algorithm to decide isomorphism between tensors. The algorithm uses the Lie algebra of derivations of a tensor to compress the space in which the search takes place to a so-called densor space. To make the method practicable we give a
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Autor:
James B. Wilson, Heiko Dietrich
We show that there is a dense set $\ourset\subseteq \mathbb{N}$ of group orders and a constant $c$ such that for every $n\in \ourset$ we can decide in time $O(n^2(\log n)^c)$ whether two $n\times n$ multiplication tables describe isomorphic groups of
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Publikováno v:
Journal of Algebra. 473:545-590
Motivated by the desire for better isomorphism tests for finite groups, we present a polynomial-time algorithm for deciding isomorphism within a class of p -groups that is well-suited to studying local properties of general groups. We also report on
Autor:
James B. Wilson
Publikováno v:
Communications in Algebra. 45:1452-1478
We consider the structure of groups and algebras that can be represented as automorphisms, respectively derivations, of bilinear maps. Representations of that sort arise when we attempt to describe the automorphisms of groups, rings, and algebras tha
Autor:
Heiko Dietrich, James B. Wilson
A group $G$ has cube-free order if no prime to the third power divides $|G|$. We describe an algorithm that given two cube-free groups $G$ and $H$ of known order, decides whether $G\cong H$, and, if so, constructs an isomorphism $G\to H$. If the grou
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