Allen Knutson

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Name Allen Knutson
Member for 3 years
Seen 27 mins ago
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Location Cornell
Age 43
Math professor at Cornell, PhD 1996
45

Questions
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Where to buy premium white chalk in the U.S., like they have at RIMS?

apr 3 at 4:57 Kyung 1●1●2

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What would you want on a Lie theory cheat poster?

jan 30 12 at 5:01 unknown (google) 5,530●6●29

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Hall’s Marriage Theorem and intervals

apr 11 at 11:15 Allen Knutson 12.3k●1●23●64

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Smooth bases of matroids

jun 21 at 9:16 Gjergji Zaimi 37.4k●2●72●149

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147

Answers
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99
What should be learned in a first serious schemes course? (4)
47
Geometric Interpretation of Trace
34
Why aren’t representations of monoids studied so much?
33
What are your favorite instructional counterexamples?
25
Why do Littlewood-Richardson coefficients describe the cohomology of the Grassmannian?
21
Algebraic geometry used “externally” (in problems without obvious algebraic structure). (2)
17
Figure out the roots from the Dynkin diagram
15
A slick proof of the Bruhat Decomposition for GL_n(k)?
15
What is the relationship between integrable systems and toric degenerations?
14
Books you would like to see translated into English.
14
Finite subgroups of SL_2(Z) (reference request)
14
Why “Classification” of 4 manifolds is NOT possible?
13
Rep Theory Consequences of Bott--Weil--Borel
13
Suggestions for good notation
12
Oriention-Reversing Diffeomorphisms of a Manifold
12
Why do wedges of spheres often appear in combinatorics?
12
Longest element of Weyl groups.
11
What does the term “yoga” mean in mathematics?
11
Theorems with unexpected conclusions
11
Examples of common false beliefs in mathematics.
11
deformation to the normal cone
11
Jokes in the sense of Littlewood: examples?
10
How much reading do you do before you attack a problem?
10
Cohomology of Flag Varieties
10
Varieties cut by quadrics
10
On referee-author communications
10
Exceptional isomorphisms of Lie groups
10
Yang-Mills and Chern-Simons functionals as Morse functions
9
Why is $\mathbb{R}^{\infty}$ defined the way it is?
9
Atiyah Bott localisation applied to Euler characteristic
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