Results 31 to 40 of about 16,775,561 (166)
Constructive degree bounds for group-based models
, 2013 Group-based models arise in algebraic statistics while studying evolution processes. They are represented by embedded toric algebraic varieties. Both from the theoretical and applied point of view one is interested in determining the ideals defining the ...
Michalek, Mateusz
core +1 more source
Segre Class Computation and Practical Applications
, 2019 Let $X \subset Y$ be closed (possibly singular) subschemes of a smooth projective toric variety $T$. We show how to compute the Segre class $s(X,Y)$ as a class in the Chow group of $T$.
Harris, Corey, Helmer, Martin
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A test complex for Gorensteinness [PDF]
, 2006 Let $R$ be a commutative noetherian ring with a dualizing complex. By recent work of Iyengar and Krause, the difference between the category of acyclic complexes and its subcategory of totally acyclic complexes measures how far $R$ is from being ...
Christensen, Lars Winther, Oana Veliche
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Temporal quantum correlations and Leggett-Garg inequalities in multi-level systems
, 2014 We show that the quantum bound for temporal correlations in a Leggett-Garg test, analogous to the Tsirelson bound for spatial correlations in a Bell test, strongly depends on the number of levels $N$ that can be accessed by the measurement apparatus via ...
Budroni, Costantino, Emary, Clive
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Semisimple Quantum Cohomology and Blow-ups
, 2004 Using results of Gathmann, we prove the following theorem: If a smooth projective variety X has generically semisimple (p,p)-quantum cohomology, then the same is true for the blow-up of X at any number of points.
Bayer, Arend
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General method for constructing local-hidden-variable models for entangled quantum states [PDF]
, 2016 Entanglement allows for the nonlocality of quantum theory, which is the resource behind device-independent quantum information protocols. However, not all entangled quantum states display nonlocality, and a central question is to determine the precise ...
Cavalcanti, Daniel +3 more
core +2 more sources
A non-projective greedy dependency parser with bidirectional LSTMs [PDF]
, 2017 The LyS-FASTPARSE team presents BIST-COVINGTON, a neural implementation of the Covington (2001) algorithm for non-projective dependency parsing. The bidirectional LSTM approach by Kipperwasser and Goldberg (2016) is used to train a greedy parser with a ...
Gómez-Rodríguez, Carlos +1 more
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Practically state-independent test of contextuality with 9 observables
, 2012 We propose a test of quantum contextuality for a single three-level system that uses nine projective measurements. It has a form of an inequality that has to be satisfied by any non-contextual theory and which is violated by any quantum state, except for
Kaszlikowski, Dagomir, Kurzynski, Pawel
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Experimental test of an entropic measurement uncertainty relation for arbitrary qubit observables
, 2019 A tight information-theoretic measurement uncertainty relation is experimentally tested with neutron spin-1/2 qubits. The noise associated to the measurement of an observable is defined via conditional Shannon entropies and a tradeoff relation between ...
Abbott, Alastair A. +4 more
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Entanglement in Mesoscopic Structures: Role of Projection
, 2003 We present a theoretical analysis of the appearance of entanglement in non-interacting mesoscopic structures. Our setup involves two oppositely polarized sources injecting electrons of opposite spin into the two incoming leads.
A. Aspect +24 more
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