Results 41 to 50 of about 63 (55)

Lazy tournaments and multidegrees of a projective embedding of \(\overline{M}_{0,n}\)

open access: yes, 2023
We consider the (iterated) Kapranov embedding \(\Omega_n:\overline{M}_{0,n+3} \hookrightarrow \mathbb{P}^1 \times \cdots \times \mathbb{P}^n\), where \(\overline{M}_{0,n+3}\) is the moduli space of stable genus \(0\) curves with \(n+3\) marked points. In
Gillespie, Maria   +2 more
core  

Deformations of Zappatic stable surfaces and their Galois covers

open access: yes
This paper considers some algebraic surfaces that can deform to planar Zappatic stable surfaces with a unique singularity of type En. We prove that the Galois covers of these surfaces are all simply connected of general type, for n >= 4, and we give a ...
Amram, Meirav, Gong, Cheng, Mo, JiaLi
core  

A Molev-Sagan type formula for double Schubert polynomials

open access: yes
We give a Molev-Sagan type formula for computing the product $\mathfrak{S}_u(x;y)\mathfrak{S}_v(x;z)$ of two double Schubert polynomials in different sets of coefficient variables where the descents of $u$ and $v$ satisfy certain conditions that ...
Samuel, Matthew J.
core   +1 more source

JAMARC No.60 [PDF]

open access: yes, 2003
PDFファイルにテキストなしperiodica

core  

Expressive curves

open access: yes, 2020
We initiate the study of a class of real plane algebraic curves which we call expressive. These are the curves whose defining polynomial has the smallest number of critical points allowed by the topology of the set of real points of a curve. This concept
Fomin, Sergey, Shustin, Eugenii
core  

Microbial metatranscriptomics : towards understanding microbial gene expression and regulation in natural habitats [PDF]

open access: yes, 2011
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2011.Cataloged from PDF version of thesis.Includes bibliographical references (p.
Shi, Yanmei, Ph. D. Massachusetts Institute of Technology
core  

$B_{n-1}$-orbits on the flag variety and the Bruhat graph for $S_{n}\times S_{n}$

open access: yes
Let $G=G_{n}=GL(n)$ be the $n\times n$ complex general linear group and embed $G_{n-1}=GL(n-1)$ in the top left hand corner of $G$. The standard Borel subgroup of upper triangular matrices $B_{n-1}$ of $G_{n-1}$ acts on the flag variety of $G$ with ...
Colarusso, Mark, Evens, Sam
core  

On the codimension of permanental varieties

open access: yes
In this article, we study permanental varieties, i.e. varieties defined by the vanishing of permanents of fixed size of a generic matrix. Permanents and their varieties play an important, and sometimes poorly understood, role in combinatorics.
Boralevi, Ada   +3 more
core  

A cluster of results on amplituhedron tiles. [PDF]

open access: yesLett Math Phys
Even-Zohar C   +5 more
europepmc   +1 more source

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