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FIBERED TORIC VARIETIES
Publications associées (33)
Global Frobenius liftability I
We formulate a conjecture characterizing smooth projective varieties in positive characteristic whose Frobenius morphism can be lifted modulo p(2)-we expect that such varieties, after a finite stale cover, admit a toric fibration over an ordinary abelian v ...
EUROPEAN MATHEMATICAL SOC-EMS2021Resolving bundle-specific intra-axonal T2 values within a voxel using diffusion-relaxation tract-based estimation
Jean-Philippe Thiran, Erick Jorge Canales Rodriguez, Alessandro Daducci, Cristina Granziera, Muhamed Barakovic
At the typical spatial resolution of MRI in the human brain, approximately 60–90% of voxels contain multiple fiber populations. Quantifying microstructural properties of distinct fiber populations within a voxel is therefore challenging but necessary. Whil ...
2020Characteristic classes as complete obstructions
In the first part of this paper, we propose a uniform interpretation of characteristic classes as obstructions to the reduction of the structure group and to the existence of an equivariant extension of a certain homomorphism defined a priori only on a sin ...
SPRINGER HEIDELBERG2019Modular functors, cohomological field theories, and topological recursion
Given a topological modular functor V in the sense of Walker, we construct vector bundles Z (lambda) over bar, over (M) over bar (g,n) whose Chern characters define semi-simple cohomological field theories. This construction depends on a determinati ...
AMER MATHEMATICAL SOC2018A note on the fibres of Mori fibre spaces
Giulio Codogni, Roberto Svaldi
We consider the problem of determining which Fano manifolds can be realised as fibres of a Mori fibre space. In particular, we study the case of toric varieties, Fano manifolds with high index and some Fano manifolds with high Picard rank. ...
SPRINGER INTERNATIONAL PUBLISHING AG2018A Looping-Delooping Adjunction For Topological Spaces
Every principal G-bundle over X is classified up to equivalence by a homotopy class X -> BG, where BG is the classifying space of G. On the other hand, for every nice topological space X Milnor constructed a strict model of its loop space (Omega) over tild ...
Int Press Boston, Inc2017Towards new invariants for principal bundles
We investigate the theory of principal bundles from a homotopical point of view. In the first part of the thesis, we prove a classification of principal bundles over a fixed base space, dual to the well-known classification of bundles with a fixed structur ...
EPFL2017Distributed photothermal spectroscopy in microstructured optical fibers: towards high-resolution mapping of gas presence over long distances
Chemical sensing using optical fibers is often challenging, as it is generally difficult to achieve strong interaction between the guided light and the analyte at the wavelength of interest for performing the detection. Despite this difficulty, many scheme ...
Optical Society of America2017Fiber bundle model under fluid pressure
Internal fluid pressure often plays an important role in the rupture of brittle materials. This is a major concern for many engineering applications and for natural hazards. More specifically, the mechanisms through which fluid pressure, applied at a micro ...
Amer Physical Soc2016Two-photon excitation endoscopy through a multimode optical fiber
Demetri Psaltis, Christophe Moser, Edgar Emilio Morales Delgado
The vast number of propagating solutions to the wave equation in multimode optical fibers represents a larger information capacity than provided by fiber bundles of the same diameter. Therefore, in the field of imaging, multimode fibers potentially allow t ...
Spie-Int Soc Optical Engineering2016