Zobrazeno 1 - 10
of 275 286
pro vyhledávání: '"Sharp, P. A."'
Let $F$ be a graph on $r$ vertices and let $G$ be a graph on $n$ vertices. Then an $F$-factor in $G$ is a subgraph of $G$ composed of $n/r$ vertex-disjoint copies of $F$, if $r$ divides $n$. In other words, an $F$-factor yields a partition of the $n$
Externí odkaz:
http://arxiv.org/abs/2411.14138
We obtain sharp embeddings from the Sobolev space $W^{k,2}_0(-1,1)$ into the space $L^1(-1,1)$ and determine the extremal functions. This improves on a previous estimate of the sharp constants of these embeddings due to Kalyabin.
Externí odkaz:
http://arxiv.org/abs/2411.10201
Publikováno v:
Class. Quantum Grav. 41 (2024) 205001
A sharp step on a chaotic potential can enhance primordial curvature fluctuations on smaller scales to the $\mathcal{O}(10^{-2})$ to form primordial black holes (PBHs). The present study discusses an inflationary potential with a sharp step that resu
Externí odkaz:
http://arxiv.org/abs/2411.10076
Autor:
Bai, Yuehao, Tabord-Meehan, Max
This paper studies the sharp testable implications of an additive random utility model with a discrete multi-valued treatment and a discrete multi-valued instrument, in which each value of the instrument only weakly increases the utility of one choic
Externí odkaz:
http://arxiv.org/abs/2411.09808
Autor:
Wang, Hongjian, Ramdas, Aaditya
We present two sharp empirical Bernstein inequalities for symmetric random matrices with bounded eigenvalues. By sharp, we mean that both inequalities adapt to the unknown variance in a tight manner: the deviation captured by the first-order $1/\sqrt
Externí odkaz:
http://arxiv.org/abs/2411.09516
Autor:
Larsen, Michael
Let $S_n$ denote a symmetric group, $\chi$ an irreducible character of $S_n$, and $g\in S_n$ an element which decomposes into $k$ disjoint cycles, where $1$-cycles are included. Then $|\chi(g)|\le k!$, and this upper bound is sharp for fixed $k$ and
Externí odkaz:
http://arxiv.org/abs/2411.08265
Autor:
Roychowdhury, Prasun, Spector, Daniel
The main results of this paper are the establishment of sharp constants for several families of critical Sobolev embeddings. These inequalities were pioneered by David R. Adams, while the sharp constant in the first order case is due to Andrea Cianch
Externí odkaz:
http://arxiv.org/abs/2411.00293
Autor:
Mikhaeil, Jonas M., Green, Donald P.
Building on statistical foundations laid by Neyman [1923] a century ago, a growing literature focuses on problems of causal inference that arise in the context of randomized experiments where the target of inference is the average treatment effect in
Externí odkaz:
http://arxiv.org/abs/2411.00191
Autor:
Qi, Chunhua, Wilner, David J.
Observations of CO isotopologue emission from protoplanetary disks at millimeter wavelengths are a powerful tool for probing the CO snowline, an important marker for disk chemistry, and also for estimating total disk gas mass, a key quantity for plan
Externí odkaz:
http://arxiv.org/abs/2410.23036
We develop a sharp palindromic argument for general 1D operators, that proves absence of semi-uniform localization in the regime of exponential symmetry-based resonances. This provides the first examples of operators with dynamical localization but n
Externí odkaz:
http://arxiv.org/abs/2410.21700