Results 101 to 110 of about 3,443,471 (241)

Mixed Hodge structures and Weierstrass $σ$-function [PDF]

arXiv, 2012
A $\sigma$-operator on a complexification $V_{\C}$ of an $\R$-vector space $V_{\R}$ is an operator $A \in \rm{End}_{\C} (V_{\C})$ such that $\sigma (A) = 0$ where $\sigma (z)$ denotes the Weierstrass $\sigma$-function. In this paper we define the notion of the strongly pseudo-real $\sigma$-operator and prove that there is one to one correspondence ...
arxiv  

A bijective proof of an unusual symmetric group generating function [PDF]

arXiv, 2003
For $\sigma \in S_n$, let $D(\sigma) = \{i : \sigma_{i} > \sigma_{i+1}\}$ denote the descent set of $\sigma$. The length of the permutation is the number of inversions, denoted by $inv(\sigma) = \big | \{(i,j) : i \sigma_j\} \big |$. Define an unusual quadratic statisitic by $baj(\sigma) = \sum_{i \in D(\sigma)} i (n-i)$.
arxiv  

Rivers as Creative Ecologies

Open Rivers
By Sigma Colón and Juli Clarkson. We explore how activists, artists, scholars, and rivers might co-create riverine engagements that interrupt the extractive capitalist, heteropatriarchal, and watershed-colonialist projects that have degraded rivers and ...
Sigma Colón and Juli Clarkson
doaj   +1 more source

On the $\sigma$-weak topology of $W^ *$-algebras [PDF]

, 1956
Shôichirô Sakai
openalex   +1 more source

The optical model potential of the $Σ$ hyperon in nuclear matter [PDF]

arXiv, 2009
We present our attempts to determine the optical model potential $U_\Sigma = V_\Sigma -iW_\Sigma$ of the $\Sigma$ hyperon in nuclear matter. We analyze the following sources of information on $U_\Sigma$: $\Sigma N$ scattering, $\Sigma^-$ atoms, and final state interaction of $\Sigma$ hyperons in the $(\pi,K^+)$ and $(K^-.\pi)$ reactions on nuclear ...
arxiv  

Simple permutations poset

, 2011
This article studies the poset of simple permutations with respect to the pattern involvement. We specify results on critically indecomposable posets obtained by Schmerl and Trotter to simple permutations and prove that if $\sigma, \pi$ are two simple ...
Adeline, Pierrot, Dominique, Rossin
core   +1 more source

Conditional probabilities on strictly separable $\sigma$-algebras [PDF]

, 1954
Miloslav Jiřina
openalex   +1 more source

Photonic neuromorphic architecture for tens-of-task lifelong learning

Light: Science & Applications
Scalable, high-capacity, and low-power computing architecture is the primary assurance for increasingly manifold and large-scale machine learning tasks.
Yuan Cheng, Jianing Zhang, Tiankuang Zhou, Yuyan Wang, Zhihao Xu, Xiaoyun Yuan, Lu Fang   +6 more
doaj   +1 more source

Transitions in the Chromium–Manganese and Nickel–Vanadium Sigma Phases [PDF]

, 1952
W. B. Pearson
openalex   +1 more source

PENGARUH PEMAHAMAN KURIKULUM, KEPEMIMPINAN KEPALA SEKOLAH, SARANA DAN PRASARANA TERHADAP KINERJA GURU

Economic Education Analysis Journal, 2019
Tujuan dari penelitian ini adalah untuk mendeskripsikan dan menganalisis pengaruh pemahaman kurikulum, kepemimpinan kepala sekolah, sarana dan prasarana terhadap kinerja guru di MTs N Pamotan Kabupaten Rembang.
Sigma Adha Astianto, Ade Rustiana
doaj