Results 11 to 20 of about 3,657 (195)

The motif problem: Geometric representations of sets of equivalence relations

open access: yesApplicable Analysis and Discrete Mathematics, 2014
A motif is a sequence of L points in Rp satisfying certain equality conditions between specified coordinates, which are described by a motif specification. In this sense a motif is a geometric representation of p equivalence relations on subsets of f1,...., Lg.
Rodney Canfield   +3 more
openaire   +2 more sources

Zakharov-Ito equation and Generalized Heisenberg ferromagnet-type equation: equivalence and related geometric curve flows

open access: yes, 2020
12 ...
Umbetova, Zhanbala   +5 more
openaire   +2 more sources

The Global Symmetry Group of Quantum Spectral Beams and Geometric Phase Factors

open access: yesAdvances in Mathematical Physics, 2015
We propose a cohomological modelling schema of quantum state spaces and their connectivity structures in relation to the formulation of global geometric phase phenomena. In the course of this schema, we introduce the notion of Hermitian differential line
Elias Zafiris
doaj   +1 more source

Fuzzy Logic for Incidence Geometry

open access: yesThe Scientific World Journal, 2016
The paper presents a mathematical framework for approximate geometric reasoning with extended objects in the context of Geography, in which all entities and their relationships are described by human language. These entities could be labelled by commonly
Alex Tserkovny
doaj   +1 more source

Sachs’ free data in real connection variables

open access: yesJournal of High Energy Physics, 2017
We discuss the Hamiltonian dynamics of general relativity with real connection variables on a null foliation, and use the Newman-Penrose formalism to shed light on the geometric meaning of the various constraints.
Elena De Paoli, Simone Speziale
doaj   +1 more source

Geometric equivalence relations on modules

open access: yesJournal of Pure and Applied Algebra, 1981
In [4] Gersten developed the notion of homotopy for ring homomorphisms. A simple homotopy of two ring homomorphisms f,g : A +B can be viewed as a deformation over the parameter space Spec Z[t]. This is a homomorphism A+B[t] which restricts to f when t = 0 and to g when t = 1.
openaire   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Modelling stem cell differentiation related processes—A practical overview for biologists

open access: yesFEBS 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

ZW4864‐mediated inhibition of the β‐catenin/BCL9/BCL9L complex reveals therapeutic potential in bladder cancer

open access: yesMolecular Oncology, EarlyView.
BCL9 and BCL9L drive bladder cancer progression by enhancing β‐catenin signaling, promoting proliferation, migration, invasion, and organoid growth. Genetic depletion of BCL9(L) suppresses malignant phenotypes, while pharmacological disruption of the β‐catenin/BCL9(L) complex with ZW4864 inhibits canonical Wnt signaling and tumor‐associated cellular ...
Roland Kotolloshi   +11 more
wiley   +1 more source

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