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Nori fundamental gerbe of essentially finite covers and Galois closure of towers of torsors
(2019)
We prove the existence of a Galois closure for towers of torsors under finite group schemes over a proper, geometrically connected and geometrically reduced algebraic stack X over a field k. This is done by describing the ...
Classifying A-field and B-field configurations in the presence of D-branes. Part II: Stacks of D-branes
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
In the paper of Bonora et al. (2008) [3] we have shown, in the context of type II superstring theory, the classification of the allowed B-field and A-field configurations in the presence of anomaly-free D-branes, the ...
Grothendieck topologies, fibered categories and descent theory: an introduction to the stack theory
(2015)
The notion of stack grew out of attempts to parameterize geometric objects varying in families. Such families are classically know as Moduli and their understanding is a central theme in Algebraic Geometry. The formalism ...
A rigorous computational model for hydrogen production from bio-ethanol to feed a fuel cell stack
(Pergamon-Elsevier Science Ltd, 2012-02)
A pseudo dynamic rigorous model of a bio-ethanol processor system (BPS) to produce hydrogen for feeding a Proton Exchange Membrane Fuel Cell (PEM-FC) is presented. The main contribution of this work is to give the overall ...
Curvas de contato no espaço projetivo
(Universidade Federal de Minas GeraisUFMG, 2014-02-07)
The odd dimensional projective space P2n-1 admits a contact structure arising from a non integrable distribution of hyperplanes determined by a symplectic form in C2n. Our object of interest is the set of rational curves ...
Fibraciones de CardyCardy fibrations
(Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires, 2015)
Exact solutions for coupled free vibrations of tapered shear-flexible thin-walled composite beams
(Academic Press Ltd - Elsevier Science Ltd, 2008-09-23)
In this paper, analytical solutions for the free vibration analysis of tapered thin-walled laminated-composite beams with both closed and open cross-sections are developed. The present study is based on a recently developed ...