Results 41 to 50 of about 80 (80)

On some invariants of cubic fourfolds. [PDF]

open access: yesEur J Math, 2023
Gounelas F, Kouvidakis A.
europepmc   +1 more source

The Riccati Flow and Singularities of Schubert Varieties

open access: yes, 1993
: Let Gr(m; n) be the Grassmannian of m\Gammadimensional subspaces of an n\Gammadim- ensional k\Gammavector space, with k = R or C. Fix an n \Theta n matrix R with coefficients in k: The Riccati Flow \Phi on Gr(m; n) is the action of a one-parameter ...
James S. Wolper
core  

Free fermionic probability theory and k-theoretic schubert calculus

open access: yesForum of Mathematics, Sigma
For each of the four particle processes given by Dieker and Warren, we show the n-step transition kernels are given by the (dual) (weak) refined symmetric Grothendieck functions up to a simple overall factor. We do so by encoding the particle dynamics as
Shinsuke Iwao   +2 more
doaj   +1 more source

The geometries of Jordan nets and Jordan webs. [PDF]

open access: yesAnn Mat Pura Appl, 2022
Bik A, Eisenmann H, Eisenmann H.
europepmc   +1 more source

Grassmannians and Cluster Structures. [PDF]

open access: yesBull Iran Math Soc, 2021
Baur K.
europepmc   +1 more source

Borel-type presentation of the torus-equivariant quantum K-ring of flag manifolds of type C

open access: yesForum of Mathematics, Sigma
We give a presentation of the torus-equivariant (small) quantum K-ring of flag manifolds of type C as an explicit quotient of a Laurent polynomial ring; our presentation can be thought of as a quantization of the classical Borel presentation of the ...
Takafumi Kouno, Satoshi Naito
doaj   +1 more source

Vector bundles on rational homogeneous spaces. [PDF]

open access: yesAnn Mat Pura Appl, 2021
Du R, Fang X, Gao Y.
europepmc   +1 more source

Characteristic numbers and chromatic polynomial of a tensor

open access: yesForum of Mathematics, Sigma
We introduce the characteristic numbers and the chromatic polynomial of a linear subspace of matrices, or equivalently of a tensor. Our approach generalizes and unifies the chromatic polynomial of a graph and of a matroid, characteristic numbers of ...
Austin Conner, Mateusz Michalek
doaj   +1 more source

The quasisymmetric flag variety: A toric complex on noncrossing partitions

open access: yesForum of Mathematics, Pi
We develop the geometric theory of equivariant quasisymmetry via a new “quasisymmetric flag variety.” This is a toric complex in the flag variety whose fixed point set is the set of (algebraic) noncrossing partitions, and whose cohomology ring is the ...
Nantel Bergeron   +4 more
doaj   +1 more source

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