Positive Polynomials, Convex Integral Polytopes, and a Random Walk Problem
Handelman, David E.
Positive Polynomials, Convex Integral Polytopes, and a Random Walk Problem [electronic resource] / by David E. Handelman. - XIV, 138 p. online resource. - Lecture Notes in Mathematics, 1282 0075-8434 ; . - Lecture Notes in Mathematics, 1282 .
Definitions and notation -- A random walk problem -- Integral closure and cohen-macauleyness -- Projective RK-modules are free -- States on ideals -- Factoriality and integral simplicity -- Meet-irreducibile ideals in RK -- Isomorphisms.
Emanating from the theory of C*-algebras and actions of tori theoren, the problems discussed here are outgrowths of random walk problems on lattices. An AGL (d,Z)-invariant (which is a partially ordered commutative algebra) is obtained for lattice polytopes (compact convex polytopes in Euclidean space whose vertices lie in Zd), and certain algebraic properties of the algebra are related to geometric properties of the polytope. There are also strong connections with convex analysis, Choquet theory, and reflection groups. This book serves as both an introduction to and a research monograph on the many interconnections between these topics, that arise out of questions of the following type: Let f be a (Laurent) polynomial in several real variables, and let P be a (Laurent) polynomial with only positive coefficients; decide under what circumstances there exists an integer n such that Pnf itself also has only positive coefficients. It is intended to reach and be of interest to a general mathematical audience as well as specialists in the areas mentioned.
9783540479512
10.1007/BFb0078909 doi
Global analysis (Mathematics).
Algebra.
Geometry.
Analysis.
Algebra.
Geometry.
QA299.6-433
515
Positive Polynomials, Convex Integral Polytopes, and a Random Walk Problem [electronic resource] / by David E. Handelman. - XIV, 138 p. online resource. - Lecture Notes in Mathematics, 1282 0075-8434 ; . - Lecture Notes in Mathematics, 1282 .
Definitions and notation -- A random walk problem -- Integral closure and cohen-macauleyness -- Projective RK-modules are free -- States on ideals -- Factoriality and integral simplicity -- Meet-irreducibile ideals in RK -- Isomorphisms.
Emanating from the theory of C*-algebras and actions of tori theoren, the problems discussed here are outgrowths of random walk problems on lattices. An AGL (d,Z)-invariant (which is a partially ordered commutative algebra) is obtained for lattice polytopes (compact convex polytopes in Euclidean space whose vertices lie in Zd), and certain algebraic properties of the algebra are related to geometric properties of the polytope. There are also strong connections with convex analysis, Choquet theory, and reflection groups. This book serves as both an introduction to and a research monograph on the many interconnections between these topics, that arise out of questions of the following type: Let f be a (Laurent) polynomial in several real variables, and let P be a (Laurent) polynomial with only positive coefficients; decide under what circumstances there exists an integer n such that Pnf itself also has only positive coefficients. It is intended to reach and be of interest to a general mathematical audience as well as specialists in the areas mentioned.
9783540479512
10.1007/BFb0078909 doi
Global analysis (Mathematics).
Algebra.
Geometry.
Analysis.
Algebra.
Geometry.
QA299.6-433
515