Results 11 to 20 of about 63 (55)

Versatile P[acman] BAC libraries for transgenesis studies in Drosophila melanogaster. [PDF]

open access: yesNat Methods, 2009
We constructed Drosophila melanogaster BAC libraries with 21-kb and 83-kb inserts in the P(acman) system. Clones representing 12-fold coverage and encompassing more than 95percent of annotated genes were mapped onto the reference genome. These clones can
Venken KJ   +11 more
europepmc   +4 more sources

A curious identity that implies Faber's conjecture [PDF]

open access: yes, 2022
We prove that a curious generating series identity implies Faber'sintersection number conjecture (by showing that it implies a combinatorialidentity already given in arXiv:1902.02742) and give a new proof of Faber'sconjecture by directly proving this ...
Garcia-Failde, E., Zagier, D.
core   +1 more source

Stability of the Levi-Civita tensors and an Alon–Tarsi type theorem [PDF]

open access: yes, 2023
We show that the Levi-Civita tensors are semistable in the sense of Geometric Invariant Theory, which is equivalent to an analogue of the Alon–Tarsi conjecture on Latin squares.
Damir Yeliussizov
core   +3 more sources

Permutation module decomposition of the second cohomology of a regular semisimple Hessenberg variety

open access: yes, 2021
Regular semisimple Hessenberg varieties admit actions of associated Weyl groups on their cohomology space of each degree. In this paper, we consider the module structure of the cohomology spaces of regular semisimple Hessenberg varieties of type $A$.
Cho, Soojin   +2 more
core   +1 more source

A note on Bridgeland stability conditions and Catalan numbers

open access: yes, 2021
In this short note, we describe a problem in algebraic geometry where the solution involves Catalan numbers. More specifically, we consider the derived category of coherent sheaves on an elliptic surface, and the action of its autoequivalence group on ...
Lo, Jason, Wong, Karissa
core  

On flagged $K$-theoretic symmetric polynomials

open access: yes, 2023
We provide a fermionic description of flagged skew Grothendieck polynomials, which can be seen as a $K$-theoretic counterpart of flagged skew Schur polynomials. Our proof relies on the Jacobi-Trudi type formula established by Matsumura.
Iwao, Shinsuke
core  

Geproci sets on skew lines in $\mathbb P^3$ with two transversals

open access: yes, 2023
The purpose of this work is to pursue classification of geproci sets. Specifically we classify $[m,n]$-geproci sets which consist of $m=4$ points on each of $n$ skew lines, assuming the skew lines have two transversals in common.
Chiantini, Luca   +8 more
core  

James reduced product schemes and double quasisymmetric functions

open access: yes, 2023
Symmetric function theory is a key ingredient in the Schubert calculus of Grassmannians. Quasisymmetric functions are analogues that are similarly central to algebraic combinatorics, but for which the associated geometry is poorly developed.
Pechenik, Oliver, Satriano, Matthew
core  

Photography principle, data transmission, and invariants of manifolds

open access: yes, 2023
In the present paper we develop the techniques suggested in \cite{ManturovNikonov} and the photography principle \cite{ManturovWan} to open a very broad path for constructing invariants for manifolds of dimensions greater than or equal to ...
Kauffman, L.   +3 more
core  

Fast Evaluation of Generalized Todd Polynomials: Applications to MacMahon's Partition Analysis and Integer Programming

open access: yes, 2023
The Todd polynomials $td_k=td_k(b_1,b_2,\dots,b_m)$ are defined by their generating functions $$\sum_{k\ge 0} td_k s^k = \prod_{i=1}^m \frac{b_i s}{e^{b_i s}-1}.$$ It appears as a basic block in Todd class of a toric variety, which is important in the ...
Xin, Guoce, Zhang, Yingrui, Zhang, ZiHao
core  

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