Zobrazeno 1 - 10
of 9 889
pro vyhledávání: '"Meléndez P"'
Autor:
Beck, Matthias, Hanada, Mitsuki, Hlavacek, Max, Lentfer, John, Vindas-Meléndez, Andrés R., Waddle, Katie
We study a refinement of the $q,t$-Catalan numbers introduced by Xin and Zhang (2022, 2023) using tools from polyhedral geometry. These refined $q,t$-Catalan numbers depend on a vector of parameters $\vec{k}$ and the classical $q,t$-Catalan numbers a
Externí odkaz:
http://arxiv.org/abs/2407.21226
Autor:
Richter, H. J., Mihajlović, G., Chopdekar, R. V., Jung, W., Gibbons, J., Melendez, N. D., Grobis, M. K., Santos, T. S.
We report device level damping measurements using spin-torque driven ferromagnetic resonance on perpendicular magnetic random-access memory (MRAM) cells. It is shown that thermal agitation enhances the apparent damping for cells smaller than about 55
Externí odkaz:
http://arxiv.org/abs/2407.20965
The matching polytope of a graph $G$ is the convex hull of the indicator vectors of the matchings on $G$. We characterize the graphs whose associated matching polytopes are Gorenstein, and then prove that all Gorenstein matching polytopes possess the
Externí odkaz:
http://arxiv.org/abs/2407.08820
Stellar ages are an important parameter to study the chemical evolution of the Galaxy. In recent years, several studies have established the existence of a relationship between chemical clocks and stellar ages. The [Y/Mg] clock is a promising techniq
Externí odkaz:
http://arxiv.org/abs/2407.07283
Autor:
Bandyopadhyay, Abhisek, Lee, S., Adroja, D. T., Lees, M. R., Stenning, G. B. G., Aich, P., Tortora, Luca, Meneghini, C., Cibin, G., Berlie, Adam, Saha, R. A., Takegami, D., Melendez-Sans, A., Poelchen, G., Yoshimura, M., Tsuei, K. D., Hu, Z., Chan, Ting-Shan, Chattopadhyay, S., Thakur, G. S., Choi, Kwang-Yong
We present an experimental investigation of the magnetic ground state in Ba$_4$NbIr$_3$O$_{12}$, a fractional valent trimer iridate. X-ray absorption and photoemission spectroscopy show that the Ir valence lies between 3+ and 4+ while Nb is pentavale
Externí odkaz:
http://arxiv.org/abs/2406.17129
Autor:
Loaiza-Tacuri, V., Cunha, Katia, Smith, Verne V., Quispe-Huaynasi, F., Costa-Almeida, Ellen, Ghezzi, Luan, Melendez, Jorge
Effective temperatures, surface gravities, and iron abundances were derived for 109 stars observed by the K2 mission using equivalent width measurements of Fe I and Fe II lines. Calculations were carried out in LTE using Kurucz model atmospheres. Ste
Externí odkaz:
http://arxiv.org/abs/2405.08128
Autor:
Feuillet, Léa, Meléndez, Marcio, Kraemer, Steve, Schmitt, Henrique, Fischer, Travis, Reeves, James
Studying the behavior along the galaxy main sequence is key in furthering our understanding of the possible connection between AGN activity and star formation. We select a sample of 1215 AGN from the catalog of SDSS galaxy properties from the Portsmo
Externí odkaz:
http://arxiv.org/abs/2405.02404
Constraining the equation of state (EOS) of strongly interacting, dense matter is the focus of intense experimental, observational, and theoretical effort. Chiral effective field theory ($\chi$EFT) can describe the EOS between the typical densities o
Externí odkaz:
http://arxiv.org/abs/2404.06323
We introduce and study a $q$-version of the chromatic polynomial of a given graph $G=(V,E)$, namely, \[ \chi_G^\lambda(q,n) \ := \sum_{\substack{\text{proper colorings}\\ c\,:\,V\to[n]}} q^{ \sum_{ v \in V } \lambda_v c(v) }, \] where $\lambda \in \m
Externí odkaz:
http://arxiv.org/abs/2403.19573
Autor:
Bayer, Margaret M., Borgwardt, Steffen, Chambers, Teressa, Daugherty, Spencer, Dawkins, Aleyah, Deligeorgaki, Danai, Liao, Hsin-Chieh, McAllister, Tyrrell, Morrison, Angela, Nelson, Garrett, Vindas-Meléndez, Andrés R.
For $\mathbf{b}=(b_1,\dots,b_n)\in \mathbb{Z}_{>0}^n$, a $\mathbf{b}$-parking function is defined to be a sequence $(\beta_1,\dots,\beta_n)$ of positive integers whose nondecreasing rearrangement $\beta'_1\leq \beta'_2\leq \cdots \leq \beta'_n$ satis
Externí odkaz:
http://arxiv.org/abs/2403.07387