Results 101 to 110 of about 6,919,485 (295)
On totally positive matrices and geometric incidences
Journal of Combinatorial Theory, Series A, 2014 11 ...
Miriam Farber +2 more
openaire +2 more sources
From mice to humans—divergent strategies for intestinal homeostasis and regeneration
FEBS Letters, EarlyView.Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
wiley +1 more source
Modelling stem cell differentiation related processes—A practical overview for biologists
FEBS Letters, EarlyView.Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar +4 more
wiley +1 more source
Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
wiley +1 more source
Double Bruhat Cells And Total Positivity
, 1998 This paper continues algebraic study of total positivity in semisimple algebraic groups undertaken in [3, 4]. The classical theory of total positivity studies matrices whose all minors are nonnegative. Recently, G.
Andrei Zelevinsky, Sergey Fomin
core
Generalizations of Total Positivity
, 2020 University of Minnesota Ph.D. dissertation. July 2020. Major: Mathematics. Advisor: Pavlo Pylyavskyy. 1 computer file (PDF); ix, 160 pages.The theory of total positivity was classically concerned with totally nonnegative matrices (matrices with all ...
Chepuri, Sunita
core
Total Positivity in Reductive Groups, II [PDF]
Bulletin of the Institute of Mathematics Academia Sinica NEW SERIES, 2019 42 ...
openaire +4 more sources
Positivity and representations of surface groups
Forum of Mathematics, PiIn [24, 26] Guichard and Wienhard introduced the notion of $\Theta $ -positivity, a generalization of Lusztig’s total positivity to real Lie groups that are not necessarily split.
Olivier Guichard +2 more
doaj +1 more source
FEBS Letters, EarlyView.The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi +6 more
wiley +1 more source
On Total Positivity of Catalan-Stieltjes Matrices
The Electronic Journal of Combinatorics, 2016 Recently Chen-Liang-Wang (Linear Algerbra Appl. 471 (2015) 383—393) proved some sufficient conditions for the total positivity of Catalan-Stieltjes matrices. Our aim is to provide a combinatorial interpretation of their sufficiant conditions. More precisely, for any Catalan-Stieltjes matrix $A$ we construct a digraph with a weight, which is positive ...
Pan, Qiongqiong, Zeng, Jiang
openaire +2 more sources