Results 31 to 40 of about 25,301 (182)

Neural network mechanisms underlying stimulus driven variability reduction. [PDF]

open access: yesPLoS Computational Biology, 2012
It is well established that the variability of the neural activity across trials, as measured by the Fano factor, is elevated. This fact poses limits on information encoding by the neural activity.
Gustavo Deco, Etienne Hugues
doaj   +1 more source

Fano Varieties in Mori Fibre Spaces [PDF]

open access: yesInternational Mathematics Research Notices, 2015
32 pages. Results on threefolds and rational homogeneous spaces strengthened. Result on toric varieties corrected.
Codogni, Giulio   +3 more
openaire   +6 more sources

New examples of cylindrical Fano fourfolds

open access: yes, 2017
International audienceWe produce new families of smooth Fano fourfolds with Picard rank 1, which contain cylinders, i.e., Zariski open subsets of form Z × A 1 , where Z is a quasiprojective variety. The affine cones over such a fourfold admit effective G
Prokhorov, Y., Zaidenberg, M.
core   +2 more sources

Uniformity of Vector Bundles of Finite Rank on Complete Intersections of Finite Codimension in a Linear ind-Grassmannian

open access: yesМоделирование и анализ информационных систем, 2015
A linear projective ind-variety X is called 1-connected if any two points on it can be connected by a chain of lines l1, l2, ..., lk in X, such that li intersects li+1.
S. M. Yermakova
doaj   +1 more source

Gorenstein toric Fano varieties [PDF]

open access: yesmanuscripta mathematica, 2005
We investigate Gorenstein toric Fano varieties by combinatorial methods using the notion of a reflexive polytope which appeared in connection to mirror symmetry. The paper contains generalisations of tools and previously known results for nonsingular toric Fano varieties.
openaire   +2 more sources

K-stability of Fano spherical varieties [PDF]

open access: yesAnnales scientifiques de l'École normale supérieure, 2020
We prove a criterion for K-stability of a $\mathbb{Q}$-Fano spherical variety with respect to equivariant special test configurations, in terms of its moment polytope and some combinatorial data associated to the open orbit. Combined with the equivariant version of the Yau-Tian-Donaldson conjecture for Fano manifolds proved by Datar and Sz kelyhidi ...
openaire   +2 more sources

Intelligent Stain‐Free Histology on Structural Colorimetric Nanocavities

open access: yesAdvanced Science, EarlyView.
Chen and Gan et al. introduce a label‐free imaging platform using inexpensive Nanocavity‐on‐Silicon (NOS) slides. These slides transform subtle tissue variations into vivid structural colors, enabling high‐contrast histological imaging under a regular optical microscope. This stain‐free approach reveals morphological details comparable to traditional H&
Qizhe Chen   +18 more
wiley   +1 more source

Electromagnetically Induced Transparency in Symmetric Planar Metamaterial at THz Wavelengths

open access: yesPhotonics, 2015
We report the experimental observation and the evidence of the analogue of electromagnetically-induced transparency (EIT) in a symmetric planar metamaterial. This effect has been obtained in the THz range thanks to a destructive Fano-interference between
Abdelwaheb Ourir   +4 more
doaj   +1 more source

Surface Properties of CeB6 and Challenges in Surface Preparation Revealed by Scanning Tunneling Microscopy

open access: yesAdvanced Physics Research, EarlyView.
The investigation of the Kondo lattice system CeB6${\rm CeB}_6$ by highly surface sensitive techniques is hampered by difficulties in preparing well‐ordered, atomically flat surfaces. The richness of possible surface terminations and their impact on spectroscopic STM results are discussed.
M. Victoria Ale Crivillero   +4 more
wiley   +1 more source

On the Chow ring of certain Fano fourfolds

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2020
We prove that certain Fano fourfolds of K3 type constructed by Fatighenti–Mongardi have a multiplicative Chow–Künneth decomposition. We present some consequences for the Chow ring of these fourfolds.
Robert Laterveer
doaj  

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