Results 31 to 40 of about 423,616 (265)

Analytical Green’s functions for continuum spectra

open access: yesJournal of High Energy Physics, 2021
Green’s functions with continuum spectra are a way of avoiding the strong bounds on new physics from the absence of new narrow resonances in experimental data.
Eugenio Megías, Mariano Quirós
doaj   +1 more source

On Strong Diameter Padded Decompositions [PDF]

open access: yes, 2019
Given a weighted graph G=(V,E,w), a partition of V is Delta-bounded if the diameter of each cluster is bounded by Delta. A distribution over Delta-bounded partitions is a beta-padded decomposition if every ball of radius gamma Delta is contained in a ...
Filtser, Arnold
core   +1 more source

Simplification and shift in cognition of political difference: applying the geometric modeling to the analysis of semantic similarity judgment. [PDF]

open access: yesPLoS ONE, 2011
Perceiving differences by means of spatial analogies is intrinsic to human cognition. Multi-dimensional scaling (MDS) analysis based on Minkowski geometry has been used primarily on data on sensory similarity judgments, leaving judgments on abstractive ...
Junko Kato, Kensuke Okada
doaj   +1 more source

Computing Minimal Doubly Resolving Sets and the Strong Metric Dimension of the Layer Sun Graph and the Line Graph of the Layer Sun Graph

open access: yesComplexity, 2020
Let G be a finite, connected graph of order of, at least, 2 with vertex set VG and edge set EG. A set S of vertices of the graph G is a doubly resolving set for G if every two distinct vertices of G are doubly resolved by some two vertices of S.
Jia-Bao Liu, Ali Zafari
doaj   +1 more source

A Chaos Analysis of the Dry Bulk Shipping Market

open access: yesMathematics, 2021
Finding low-dimensional chaos is a relevant issue as it could allow short-term reliable forecasting. However, the existence of chaos in shipping freight rates remains an open and outstanding matter as previous research used methodology that can produce ...
Lucía Inglada-Pérez   +1 more
doaj   +1 more source

A proposal to measure the similarity between retinal vessel segmentations images

open access: yesNova Scientia, 2019
Introduction: We propose a novel approach for the assessment of the similarity of retinal vessel segmentation images that is based on linking the standard performance metrics of a segmentation algorithm, with the actual structural properties of the ...
Marco A. Escobar   +3 more
doaj   +1 more source

Coarse and synthetic Weil-Petersson geometry: quasi-flats, geodesics, and relative hyperbolicity

open access: yes, 2007
We analyze the coarse geometry of the Weil-Petersson metric on Teichm\"uller space, focusing on applications to its synthetic geometry (in particular the behavior of geodesics).
Behrstock   +8 more
core   +6 more sources

On the conformal transformation and duality in gravity [PDF]

open access: yes, 1996
The theory described by the sum of the Einstein-Hilbert action and the action of conformal scalar field possesses the duality symmetry which includes some special conformal transformation of the metric, and also inversion of scalar field and of the ...
Aginstein M E   +24 more
core   +2 more sources

On the strong metric dimension of composed graphs

open access: yes, 2022
Two vertices $u$ and $v$ of an undirected graph $G$ are strongly resolved by a vertex $w$ if there is a shortest path between $w$ and $u$ containing $v$ or a shortest path between $w$ and $v$ containing $u$. A vertex set $R$ is a strong resolving set for $G$ if for each pair of vertices there is a vertex in $R$ that strongly resolves them.
Wagner, Marcel   +2 more
openaire   +2 more sources

Nonlinear diffusion equations and curvature conditions in metric measure spaces [PDF]

open access: yes, 2019
The aim of this paper is to provide new characterizations of the curvature dimension condition in the context of metric measure spaces (X,d,m). On the geometric side, our new approach takes into account suitable weighted action functionals which provide ...
Ambrosio, Luigi   +2 more
core   +3 more sources

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