### Recent Comments

Gil Kalai on זה הזמן לשינוי Yiftach on זה הזמן לשינוי Gil Kalai on זה הזמן לשינוי קוסמופוליט on זה הזמן לשינוי Gil Kalai on זה הזמן לשינוי Eli_B on זה הזמן לשינוי Michael Elkin on זה הזמן לשינוי Gil Kalai on זה הזמן לשינוי Eli_B on זה הזמן לשינוי Gil Kalai on זה הזמן לשינוי Gil Kalai on זה הזמן לשינוי Eli_B on זה הזמן לשינוי -
### Recent Posts

- זה הזמן לשינוי
- Combinatorics and More – Greatest Hits
- Ilan and me
- The Simplex, the Cyclic polytope, the Positroidron, the Amplituhedron, and Beyond
- From Oberwolfach: The Topological Tverberg Conjecture is False
- Midrasha Mathematicae #18: In And Around Combinatorics
- Quantum computing: achievable reality or unrealistic dream
- A Historical Picture Taken by Nimrod Megiddo
- Scott Triumphs* at the Shtetl

### Top Posts & Pages

- זה הזמן לשינוי
- The Simplex, the Cyclic polytope, the Positroidron, the Amplituhedron, and Beyond
- The Kadison-Singer Conjecture has beed Proved by Adam Marcus, Dan Spielman, and Nikhil Srivastava
- Combinatorics and More - Greatest Hits
- Quantum computing: achievable reality or unrealistic dream
- Believing that the Earth is Round When it Matters
- Happy Birthday Richard Stanley!
- Answer: Lord Kelvin, The Age of the Earth, and the Age of the Sun
- Extremal Combinatorics I: Extremal Problems on Set Systems

### RSS

# Monthly Archives: April 2009

## The Generation Gap

Which is larger, the generation gap between you and your perents or the generation gap between you and your children?

## A Problem on Planar Percolation

Conjecture (Gady Kozma): Prove that the critical probability for planar percolation on a Cayley graph of the group is always an algebraic number. Gady mentioned this conjecture in his talk here about percolation on infinite Cayley graphs. (Update April 30: Today Gady mentioned … Continue reading

## A Conference and a School on Oded Schramm’s Mathematics

There will be a conference this summer in Redmond and a school in December in Jerusalem devoted to Oded Schramm’s mathematics. Oded Schramm Memorial Conference Probability and Geometry Redmond WA, August 30-31, 2009 To be held at Microsoft … Continue reading

## Two Fractal Vegtables Found on Blogs

Physicists and mathematicians think alike: From Kowalski’s blog From asymptotia

## Exciting New Blogs and New Posts

There are new exciting blogs and all sort of nice things on old blogs. In Avzel’s journal you can find a post with the words and a link to the performence of a beautiful Leonard Cohen’s song “everybody knows”; and you can … Continue reading

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

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

## How the g-Conjecture Came About

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