نتایج جستجو برای: von neumann regular

تعداد نتایج: 223592  

Journal: :Proceedings of the American Mathematical Society 1996

Journal: :Proceedings of the American Mathematical Society 1973

2011
PETER GABRIEL

All rings considered are associative with identity and all occurring modules are unital right modules. We denote by Mod R the category of all R-modules. The spectrum of a ring R is known to be the “set” of isomorphism classes of indecomposable injective right R-modules. When R is right-Noetherian the spectrum describes all injective Rmodules, since each injective module is a direct sum of indec...

2005
M. Dickmann F. Miraglia

The aim of this paper is to prove that, if R is a commutative regular ring in which 2 is a unit, then the reduced theory of quadratic forms with invertible coefficients in R, modulo a proper preorder T , satisfies Marshall’s signature conjecture and Milnor’s Witt ring conjecture (for precise statements, see Section 1 below). For that purpose we use the theory of special groups (abbreviated SG),...

1987
David S. Touretzky Mark Derthick

We define five properties of symbol representations (called the Five M's) that together provide a powerful and flexible symbol processing facility. Our ideal symbol structures arc Mobile, Memorable, Meaningful, Malleable, and Modifiable. Conventional symbol processing architectures, such as Lisp on von Neumann machines, support some of these properties, but others seem to require flexibility an...

1992
Harold V. McIntosh

A very general commentary on the program camex, accompanied by an assortment of experiments which can be performed using the cam/pc board. These include the use of one, two, and three dimensional automata, although the primary utility of the board lies with two dimensional automata evolving on a 256x256 screen. Binary Moore and von Neumann neighborhoods are possible in each of the two half-cam'...

2012
GLENN HURLBERT G. Hurlbert

The Birkhoff-von Neumann Theorem has been proved many times in the literature with a number of different methods, some inductive, some constructive, some existential. We offer a new proof that is a little more direct than most, though nonconstructive.

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