Results 101 to 110 of about 15,188,620 (312)

An algorithm for the principal ideal problem in indefinite quaternion algebras [PDF]

open access: yes, 2014
International audienceDeciding whether an ideal of a number field is principal and finding a generator is a fundamental problem with many applications in computational number theory.
Page, Aurel
core   +1 more source

Introduction to Measurement with Theory. [PDF]

open access: yes
This paper is the introduction to the forthcoming Macroeconomic Dynamics Special Issue on Measurement with Theory. The Guest Editors of the special issue are William A. Barnett, W. Erwin Diewert, Shigeru Iwata, and Arnold Zellner.
Arnold Zellner   +2 more
core   +2 more sources

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS 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

ABL kinase‐dependent phosphorylation of SH proteins promotes their direct interaction with CRK family SH2 domains

open access: yesFEBS Letters, EarlyView.
CT10 regulator of kinase (CRK) and CRK‐Like (CRKL) are signaling adaptors driving cell adhesion, motility, differentiation, and proliferation. SH2‐domain containing (SH) proteins are enriched in YXXP motifs which when phosphorylated create preferred binding sites for CRK family SH2 domains.
Phoebe M. Cousens   +8 more
wiley   +1 more source

Combinatorics of geometrically distributed random variables: new q-tangent and q-secant numbers

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
Up-down permutations are counted by tangent (respectively, secant) numbers. Considering words instead, where the letters are produced by independent geometric distributions, there are several ways of introducing this concept; in the limit they all ...
Helmut Prodinger
doaj   +1 more source

The Prouhet Tarry Escott Problem: A Review

open access: yesMathematics, 2019
This paper presents a review of the Prouhet Tarry Escott problem. The solutions of the Prouhet Tarry Escott problem are significant because of its numerous applications. Available literature about the present topic has been critically examined. The ideal
Srikanth Raghavendran, Veena Narayanan
doaj   +1 more source

Crystal Constructions in Number Theory [PDF]

open access: yes, 2019
Weyl group multiple Dirichlet series and metaplectic Whittaker functions can be described in terms of crystal graphs. We present crystals as parameterized by Littelmann patterns and we give a survey of purely combinatorial constructions of prime power coefficients of Weyl group multiple Dirichlet series and metaplectic Whittaker functions using the ...
openaire   +3 more sources

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

open access: yesFEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang   +4 more
wiley   +1 more source

Introduction to Non-Diophantine Number Theory [PDF]

open access: yes
In the 19th century, non-Euclidean geometries were discovered and studied. In the 20th century, non-Diophantinearithmetics were discovered and studied. Construction of non-Diophantine arithmetics is based on more generalmathematical structures, which are
Burgin, Mark
core   +1 more source

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