Results 71 to 80 of about 614,238 (277)
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
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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
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Advanced Engineering Materials, EarlyView.This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm +6 more
wiley +1 more source
Foundations of geometric approximate group theory
, 2020 Completely revised and updated ...
Cordes, Matthew +2 more
openaire +2 more sources
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
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
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(−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
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Advanced Engineering Materials, EarlyView.The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu +8 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
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Evaluating Energy Absorption Performance of Filled Lattice Structures
Advanced Engineering Materials, EarlyView.Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney +2 more
wiley +1 more source