Results 71 to 80 of about 611,350 (278)
Introducción a la teoría geométrica de grupos
Revista Integración, 2011 En este artículo haremos una introducción a la teoría geométrica de grupos. Veremos cómo a partir de una presentación finita de un grupo, se puede dotar a dicho grupo de una estructura de espacio métrico; se discute la acción del grupo sobre dicho ...
Olga Salazar-Díaz +1 more
doaj
Holographic duals of 3d S-fold CFTs
Journal of High Energy Physics, 2018 We construct non-geometric AdS4 solutions of IIB string theory where the fields in overlapping patches are glued by elements of the S-duality group. We obtain them by suitable quotients of compact and non-compact geometric solutions.
Benjamin Assel, Alessandro Tomasiello
doaj +1 more source
Advanced Engineering Materials, EarlyView.A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm +3 more
wiley +1 more source
Foundations of geometric approximate group theory
, 2020 Completely revised and updated ...
Cordes, Matthew +2 more
openaire +2 more sources
Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys
Advanced Engineering Materials, EarlyView.This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa +9 more
wiley +1 more source
Relative differential K-characters
Symmetry, Integrability and Geometry: Methods and Applications, 2008 We define a group of relative differential K-characters associated with a smooth map between two smooth compact manifolds. We show that this group fits into a short exact sequence as in the non-relative case.
Mohamed Maghfoul
doaj
(−1)-form symmetries from M-theory and SymTFTs
Journal of High Energy PhysicsWe explore (−1)-form symmetries within the framework of geometric engineering in M-theory. By constructing the Symmetry Topological Field Theory (SymTFT) for selected 5d N $$ \mathcal{N} $$ = 1, 4d N $$ \mathcal{N} $$ = 2 and 4d N $$ \mathcal{N} $$ = 1 ...
Marwan Najjar +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund +6 more
wiley +1 more source
Scattering theory for geometrically finite groups
, 1999 We develop a geometric scattering theory for a geometrically finite group acting on (a vector bundle over) a symmetric space of negative curvature. In particular, we obtain the meromorphic continuation of Eisenstein series and scattering matrices and their functional equations.
Bunke, Ulrich, Olbrich, Martin
openaire +2 more sources
Analyzing Electronic Excitations and Exciton Binding Energies in Y6 Films
Advanced Functional Materials, EarlyView.The Y6 molecule is used for increasing the efficiency of organic solar cells. The exciton binding energy is calculated for ensembles of Y6 molecules that are representative of the typically used films. The calculations show that the excitons typically spread out over many molecules.
Sahar Javaid Akram +2 more
wiley +1 more source