The schubert-calculus tag has no wiki summary.

**4**

votes

**0**answers

161 views

### Littlewood-Richardson rule for Schubert polynomials

What is the current state of the problem of finding a combinatorial rule for multiplying two Schubert polynomials? Is the problem still open?

**2**

votes

**1**answer

102 views

### Depth of Schubert cycles

For $a:a_1\geq \cdots\geq a_c$, let $\sigma_a$ be the corresponding Schubert cycle over $Gr(c,\infty)$. We say $a$ is of depth $k$ if $a_1-a_c=k$ ($c>1$). Let $a$ and $b$ be of depth $k_1$ and ...

**4**

votes

**2**answers

196 views

### Upper bound for the product of Schubert cycles

Let $Gr(c,\infty)$ be the complex grassmannian of $c$-dimensional subspaces of the infinite dimensional complex space. Every finite dimensional grassmannian, $Gr(c,N)$, can be thought as a subspace of ...

**6**

votes

**0**answers

198 views

### Fomin-Kirillov algebras and Schubert calculus

In
Fomin, Sergey; Kirillov, Anatol N. Quadratic algebras, Dunkl elements, and
Schubert calculus. Advances in geometry, 147--182, Progr. Math., 172,
BirkhĂ¤user Boston, Boston, MA, 1999. MR1667680 ...

**2**

votes

**0**answers

73 views

### Computing intersection of cycles on the product of Grassmannians/Deligne-Lusztig varieties

My collaborators and I are preparing an interesting manuscript where the computation leads to something related to what we believe to be in the area of Schubert calculus; but none of us knows much ...

**3**

votes

**2**answers

185 views

### Where can I look up some Schubert calculus numbers?

I don't know much about Schubert calculus, but I would like to know all of the intersection numbers
$$
\#(X_{w_1} \cap X_{w_2} \cap X_{w_3})
$$
where $X_w$ indicates a Schubert variety (maybe ...

**28**

votes

**2**answers

903 views

### Schubert calculus, as lowbrow as possible

Starting in a week I'm going to be an instructor at a summer program for exceptionally mathematically talented high school students, and I'm going to be teaching a class on Schubert calculus. The ...

**6**

votes

**0**answers

209 views

### Real schubert calculus

Studying real enumerative questions I noticed, that the even-even Schubert varieties of the real Grassmannian $Gr:=Gr_{2k}(2n,\mathbb R)$ behave analogously to the complex case.
I call a partition ...

**8**

votes

**4**answers

544 views

### Subspaces of End(V) that can fix any vector

Suppose V is a finite-dimensional vector space and I have a linear subspace of its endomorphisms
$$W \subseteq \mbox{End}(V).$$
How can I easily check if every vector of $V$ is fixed by some element ...