bio | website | gilkalai.wordpress.com |
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location | Jerusalem | |
age | 59 | |
visits | member for | 5 years, 5 months |
seen | 9 hours ago | |
stats | profile views | 17,746 |
Professor of Mathematics at the Hebrew University of Jerusalem and at Yale University
Nov 13 |
answered | Fundamental Examples |
Nov 12 |
answered | Fundamental Examples |
Nov 12 |
comment |
Fundamental Examples
I agree. I would also add the Fibonacci numbers en.wikipedia.org/wiki/Fibonacci_number . Fibonacci numbers lead to rational generating functions and Catalan numbers to rational generating functions. The Catalan numbers appear in an amazing number of different problems. |
Nov 12 |
answered | What is the first interesting theorem in (insert subject here)? |
Nov 12 |
comment |
Fundamental Examples
Dear Andrew, I see your point; In any case, now that it is a community wiki some explenation for why an example is fundamental can be added by other participants. |
Nov 12 |
answered | Free, high quality mathematical writing online? |
Nov 12 |
revised |
How Does Random Noise Typically Look?
edited tags |
Nov 12 |
revised |
How Does Random Noise Typically Look?
edited tags; edited tags |
Nov 12 |
answered | Fundamental Examples |
Nov 12 |
awarded | Self-Learner |
Nov 12 |
comment |
Groupoid of moves on trivalent fatgraph
i did not understand the second move. But first what is a fatgraph? |
Nov 12 |
revised |
Fundamental Examples
edited tags |
Nov 12 |
answered | Fundamental Examples |
Nov 12 |
answered | Fundamental Examples |
Nov 12 |
answered | Fundamental Examples |
Nov 11 |
comment |
Fundamental Examples
I agree, complex projective planes (and spaces), real projective planes and spaces, and those over finite field are very important examples. |
Nov 11 |
comment |
What precisely Is “Categorification”?
I came across this description, but I cannot imagine how Betti numbers were defined to start with. |
Nov 11 |
comment |
What precisely Is “Categorification”?
what do you mean by moving from Betti numbers to homology; arnt the Betti number defined as the dimensions of homology to start with? |
Nov 11 |
revised |
Fundamental Examples
added 80 characters in body |
Nov 11 |
comment |
Fundamental Examples
I see, I guess it is a concrete example! (and even a popular one.) |