Results 31 to 40 of about 1,070,654 (256)

Holomorphic Anomalies in Topological Field Theories [PDF]

open access: yes, 1993
We study the stringy genus one partition function of $N=2$ SCFT's. It is shown how to compute this using an anomaly in decoupling of BRST trivial states from the partition function.
Aspinwall   +37 more
core   +3 more sources

Entanglement content of quantum particle excitations. III. Graph partition functions [PDF]

open access: yesJournal of Mathematics and Physics, 2019
We consider two measures of entanglement, the logarithmic negativity and the entanglement entropy, between regions of space in excited states of many-body systems formed by a finite number of particle excitations.
O. Castro-Alvaredo   +3 more
semanticscholar   +1 more source

Euler number of Instanton Moduli space and Seiberg-Witten invariants [PDF]

open access: yes, 2000
We show that a partition function of topological twisted N=4 Yang-Mills theory is given by Seiberg-Witten invariants on a Riemannian four manifolds under the condition that the sum of Euler number and signature of the four manifolds vanish. The partition
A. Sako   +20 more
core   +2 more sources

Fuzzy 2-partition entropy threshold selection based on Big Bang–Big Crunch Optimization algorithm

open access: yesEgyptian Informatics Journal, 2015
The fuzzy 2-partition entropy approach has been widely used to select threshold value for image segmenting. This approach used two parameterized fuzzy membership functions to form a fuzzy 2-partition of the image.
Baljit Singh Khehra   +2 more
doaj   +1 more source

Parallel algorithms for select and partition with noisy comparisons [PDF]

open access: yesSymposium on the Theory of Computing, 2016
We consider the problem of finding the kth highest element in a totally ordered set of n elements (Select), and partitioning a totally ordered set into the top k and bottom n − k elements (Partition) using pairwise comparisons. Motivated by settings like
M. Braverman, Jieming Mao, S. Weinberg
semanticscholar   +1 more source

A Note on the Maximum Size of a Prefix Code

open access: yesIEEE Access, 2022
In the presented paper, we investigate the problem of finding the maximum possible cardinality of a dictionary of a prefix code for a string of a given length.
Viliam Hromada, Otokar Grosek
doaj   +1 more source

Practical challenges in data‐driven interpolation: Dealing with noise, enforcing stability, and computing realizations

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley   +1 more source

Data‐driven performance metrics for neural network learning

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri   +2 more
wiley   +1 more source

Humans and the core partition: An agent-based modeling experiment.

open access: yesPLoS ONE, 2022
Although strategic coalition formation is traditionally modeled using cooperative game theory, behavioral game theorists have repeatedly shown that outcomes predicted by game theory are different from those generated by actual human behavior.
Andrew J Collins, Sheida Etemadidavan
doaj   +1 more source

Effective Lagrangian for non-Abelian two-dimensional topological field theory

open access: yesNuclear Physics B, 2022
We develop a systematic approach to obtain an effective Lagrangian for 2D non-Abelian topological BF theory. A general expression is presented in a diagrammatic representation containing solely scalar fields. Expressions for the SU(2) and SU(3) effective
Pongwit Srisangyingcharoen   +1 more
doaj   +1 more source

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