Results 41 to 50 of about 1,311,142 (167)
On coupling and “vacant set level set” percolation
Electronic Communications in Probability, 2019 In this note we discuss vacant set level set percolation on a transient weighted graph. It interpolates between the percolation of the vacant set of random interlacements and the level set percolation of the Gaussian free field. We employ coupling and derive a stochastic domination from which we deduce in a rather general set-up a certain monotonicity ...
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Regularity of the Level Set Flow [PDF]
Communications on Pure and Applied Mathematics, 2017 AbstractWe showed earlier that the level set function of a monotonic advancing front is twice differentiable everywhere with bounded second derivative and satisfies the equation classically. We show here that the second derivative is continuous if and only if the flow has a single singular time where it becomes extinct and the singular set consists of ...
Colding, Tobias, Minicozzi, William
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Analysis of Fuzzy Vector Spaces as an Algebraic Framework for Flag Codes
MathematicsFlag codes are a recent network coding strategy based on linear algebra. Fuzzy vector subspaces extend the notions of classical linear algebra. They can be seen as abstractions of flags to the point that several fuzzy vector subspaces can be identified ...
Carlos Bejines +2 more
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Multi-level decoding of task sets in neurophysiological data during cognitive flexibility
iScience, 2021 Summary: Cognitive flexibility is essential to achieve higher level goals. Cognitive theories assume that the activation/deactivation of goals and task rules is central to understand cognitive flexibility.
Vanessa Petruo +4 more
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Differentiating Thick Clouds From Thin Clouds by Using Intensity Inhomogeneity
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingClouds are usually present in optical satellite images, yet they occlude the ground truth, making it difficult to interpret satellite images. Moreover, distinguishing between areas with thick clouds and thin clouds is challenging when using the existing ...
Yishuo Huang, Bon A Dewitt
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Detailed Voxel-Based Implicit Modeling With Local Boolean Composition of Discrete Level Sets
IEEE Access, 2020 Compared with the functionally-based implicit models, the level set models are usually defined by discretely sampling the implicit function values over the volume grid to represent the shapes, which are suitable for scientific computing and engineering ...
Zhongxiang Duan +3 more
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Probabilistic shape‐based segmentation method using level sets
IET Computer Vision, 2014 In this study, a novel probabilistic, geometric and dynamic shape‐based level sets method is proposed. The shape prior is coupled with the intensity information to enhance the segmentation results.
Melih S. Aslan +3 more
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The Level Sets of Typical Games
Notices of the American Mathematical Society, 2014 This is the author original manuscript.
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Convergence of Polynomial Level Sets [PDF]
Transactions of the American Mathematical Society, 1998 In this paper we give a characterization of pointwise and uniform convergence of sequences of homogeneous polynomials on a Banach space by means of the convergence of their level sets. Results are obtained both in the real and the complex cases, as well as some generalizations to the nonhomogeneous case and to holomorphic functions in the complex case.
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Morphological characterization of the hippocampus: a first database in Ecuador
Frontiers in Human NeuroscienceIntroductionThe hippocampal volume is a well-known biomarker to detect and diagnose neurological, psychiatric, and psychological diseases. However, other morphological descriptors are not analyzed.
Stefano Buitrón Cevallos +8 more
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