Tag Archives: g-conjecture

(Eran Nevo) The g-Conjecture III: Algebraic Shifting

Posted on September 21, 2009 by

This is the third in a series of posts by Eran Nevo on the g-conjecture. Eran’s first post was devoted to the combinatorics of the g-conjecture and was followed by a further post by me on the origin of the g-conjecture. … Continue reading →

Posted in Combinatorics, Convex polytopes, Guest blogger, Open problems | Tagged , | 2 Comments

(Eran Nevo) The g-Conjecture II: The Commutative Algebra Connection

Posted on April 9, 2009 by

Richard Stanley This post is authored by Eran Nevo. (It is the second in a series of five posts.) The g-conjecture: the commutative algebra connection Let be a triangulation of a -dimensional sphere. Stanley’s idea was to associate with a ring … Continue reading →

Posted in Combinatorics, Convex polytopes, Open problems | Tagged , , , | 4 Comments

How the g-Conjecture Came About

Posted on April 4, 2009 by

This post complements Eran Nevo’s first  post on the -conjecture 1) Euler’s theorem Euler Euler’s famous formula for the numbers of vertices, edges and faces of a  polytope in space is the starting point of many mathematical stories. (Descartes came close … Continue reading →

Posted in Combinatorics, Convex polytopes, Open problems | Tagged , , , , | 5 Comments

(Eran Nevo) The g-Conjecture I

Posted on April 2, 2009 by

This post is authored by Eran Nevo. (It is the first in a series of five posts.) Peter McMullen The g-conjecture What are the possible face numbers of triangulations of spheres? There is only one zero-dimensional sphere and it consists … Continue reading →

Posted in Combinatorics, Convex polytopes, Guest blogger, Open problems | Tagged , , | 5 Comments

Billerafest

Posted on June 12, 2008 by

I am unable to attend the conference taking place now at Cornell, but I send my warmest greetings to Lou from Jerusalem. The titles and abstracts of the lectures can be found here. Let me tell you about two theorems by Lou. … Continue reading →

Posted in Conferences, Convex polytopes | Tagged , , , | 1 Comment