Results 61 to 70 of about 15,579,277 (362)

Splitting of extensions in the category of locally compact abelian groups [PDF]

International Journal of Group Theory, 2014
Let $pounds$ be the category of all locally compact abelian (LCA) groups. In this paper, the groups $G$ in $pounds$ are determined such that every extension $0to Xto Yto Gto 0$ with divisible, $sigma-$compact $X$ in $pounds$ splits. We also determine the
Hossein Sahleh , Akbar Alijani
doaj  

Categorically Closed Topological Groups

Axioms, 2017
Let C → be a category whose objects are semigroups with topology and morphisms are closed semigroup relations, in particular, continuous homomorphisms.
Taras Banakh
doaj   +1 more source

Linear flows on compact, semisimple Lie groups: stability and periodic orbits

Electronic Journal of Qualitative Theory of Differential Equations, 2021
Our first purpose is to study the stability of linear flows on real, connected, compact, semisimple Lie groups. Our second purpose is to study periodic orbits of linear and invariant flows.
Simão Stelmastchuk
doaj   +1 more source

Random Action of Compact Lie Groups and Minimax Estimation of a Mean Pattern [PDF]

, 2011
This paper considers the problem of estimating a mean pattern in the setting of Grenander's pattern theory. Shape variability in a dataset of curves or images is modeled by the random action of elements in a compact Lie group on an infinite dimensional ...
Gadat, Sébastien, Bigot, Jérémie, Christophe, Claire, Claire, Christophe   +3 more
core   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch, Isabel Vogel, Sina Nokodian, Johanna Moeller, Antonia Blechschmidt, Vicky Hecht, Vanessa Kuentzel, Katharina Thiedig, Melissa Schwab, Oliver Schilling, Holger Bronger, Marion Kiechle, Viktor Magdolen, Tobias Dreyer   +13 more
wiley   +1 more source

Compact group actions and the topology of manifolds with non-positive curvature

, 1979
THE PURPOSE of this paper is twofold. First of all, we study properties of harmonic maps from a compact manifold M into a compact manifold N with non-positive curvature.
R. Schoen, S. Yau
semanticscholar   +1 more source

Comparative activity of carbapenem testing: the COMPACT study.

, 2011
Objectives: Doripenem is a new carbapenem recently introduced into Europe. The COMParative Activity of Carbapenem Testing (COMPACT) study compared the susceptibility of common Gram-negative bacilli causing serious infections in hospitalized patients ...
V. Korten, J. M. Laeuffer, COMPACT study group, R. K. Flamm, I. Morrissey, J. J. Picazo, J. C. Seak, V. Sambri, A. Quintana, ), P. Nordmann, R. Mutters   +11 more
core   +1 more source

ESR1 methylation and ESR1 mutations in circulating tumor cells (CTCs) and paired plasma‐cfDNA of advanced breast cancer patients: A feasibility proof‐of‐concept study

Molecular Oncology, EarlyView.
Circulating tumor cells (CTCs) and plasma cell‐free DNA (cfDNA) were analyzed to detect ESR1 mutations and methylation in patients with advanced breast cancer. CTC‐derived DNA showed higher sensitivity for mutation detection and revealed complementary genetic and epigenetic alterations, highlighting the added value of CTC analysis for understanding ...
Dimitra Stergiopoulou, Athina Markou, Eleonora Nicolo, Mara S Serafini, Qiang Zhang, Youbin Zhang, Lorenzo Gerratana, Andrew A. Davis, Huiping Liu, William J Gradishar, Carolina Reduzzi, Massimo Cristofanilli, Evi Lianidou   +12 more
wiley   +1 more source

Star-forming compact groups: Tracing the early evolutionary stages of compact group environments

Astronomy & Astrophysics
Context. In the context of pre-processing – a scenario where galaxies quench their star formation within substructures before falling into clusters – we investigate the impact of environment on the physical and morphological properties of galaxies in ...
Ortiz-Gómez S., Torres-Flores S., Monachesi A., Montaguth G. P., Véliz Astudillo S., Mendes de Oliveira C., Olave-Rojas D. E., Lima-Dias C., Demarco R., Pallero D., Lopes A. R., Cortesi A., Telles E., Kanaan A., Ribeiro T., Schoenell W.   +15 more
doaj   +1 more source

The Formation of Dwarf Galaxies in Tidal Debris: A Study of the Compact Group Environment [PDF]

, 1995
From R-band images of 42 Hickson compact groups, we present a sample of 47 candidate dwarf galaxies that are associated with the tidal tails and arms in the groups. The candidates, found in 15 tidal features, have R magnitudes and masses (for M/L = 1) in
S. Hunsberger, J. Charlton, D. Zaritsky
semanticscholar   +1 more source