bio | website | gilkalai.wordpress.com |
---|---|---|
location | Jerusalem | |
age | 59 | |
visits | member for | 5 years, 5 months |
seen | 8 hours ago | |
stats | profile views | 17,678 |
Professor of Mathematics at the Hebrew University of Jerusalem and at Yale University
Apr 28 |
asked | Grassmann-Plücker relations for permanents |
Apr 28 |
comment |
A question about pairs of lines in 3D projective space
Thanks, David. Yes this is correct. But we can identify the quaternions with 2 dimensional v.s. over the complex so we get 8 choose 4. and then we can save a bit by intersecting with a generic hyperplane and get 7 choose 3. I wonder if Amitsur's theorem is relevant. |
Apr 28 |
comment |
A question about pairs of lines in 3D projective space
The following MO question is of some relevance mathoverflow.net/questions/65421/… |
Apr 28 |
revised |
Experimental Mathematics
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Apr 28 |
asked | A question about pairs of lines in 3D projective space |
Apr 24 |
revised |
Why was John Nash's 1950 Game Theory paper such a big deal?
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Apr 24 |
comment |
Why was John Nash's 1950 Game Theory paper such a big deal?
Joël, Of course there are also issues with the notion of value for zero-sum 2-person games, like the need to have mixed strategies which is problematic in various cases (and various others issues). Once you apply Von Neumann and Morgenstern utility theory on mixed outcomes you often loose the zero-sum property. But I agree that the notion of a value of zero-sum games is also very important. |
Apr 23 |
comment |
Why was John Nash's 1950 Game Theory paper such a big deal?
Dear Joël, I agree. To a large extent Nash equilibrium is a miracle concept leading to (almost) all the problems in applied game theory. It often represents genuine problems and shortcomings not only of economics theory but also of economics reality. Certainly this is something we, as mathematicians can celebrate and be enthusiastic about! |
Apr 23 |
answered | Why was John Nash's 1950 Game Theory paper such a big deal? |
Apr 21 |
awarded | Famous Question |
Apr 14 |
awarded | Good Answer |
Apr 14 |
revised |
What have simplicial complexes ever done for graph theory?
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Apr 8 |
revised |
What have simplicial complexes ever done for graph theory?
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Apr 7 |
revised |
What is the amplituhedron?
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Apr 7 |
awarded | Notable Question |
Mar 28 |
comment |
First PhD in pure math and the second PhD in applied math
I am aware of several such cases. (Prhaps in Israel and Europe there is more flexibility.) |
Mar 28 |
revised |
What have simplicial complexes ever done for graph theory?
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Mar 28 |
revised |
What have simplicial complexes ever done for graph theory?
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Mar 27 |
awarded | Nice Answer |
Mar 27 |
revised |
What have simplicial complexes ever done for graph theory?
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