Results 91 to 100 of about 4,715,878 (299)

Branching Geodesics of the Gromov-Hausdorff Distance

open access: yesAnalysis and Geometry in Metric Spaces, 2022
In this paper, we first evaluate topological distributions of the sets of all doubling spaces, all uniformly disconnected spaces, and all uniformly perfect spaces in the space of all isometry classes of compact metric spaces equipped with the Gromov ...
Ishiki Yoshito
doaj   +1 more source

On a vector space construction by Hausdorff [PDF]

open access: yesProceedings of the American Mathematical Society, 1957
Initroduction. Some years ago Hausdorff, using Hamel bases, showed that any infinite dimensional real Banach space contained a second category linear subspace that was not complete under any equivalent norm [5]. It is shown below that a slight abstraction of his construction leads to the following: (A) a "multiple offender" example (Theorem 3), one ...
openaire   +2 more sources

Atomic Scale Visualization of Vibrational Modes in Armchair Graphene Nanoribbon

open access: yesphysica status solidi (RRL) – Rapid Research Letters, EarlyView.
To visualize the vibrational modes of armchair graphene nanoribbons and verify theories, a functionalized scanning tunneling tip is used to enhance the inelastic tunneling channel over the elastic one. Results show that edge phonons are localized than bulk phonons with little influence from substrate interactions.
Stefan Šćepanović   +4 more
wiley   +1 more source

On Functionally Hausdorff Spaces

open access: yesMissouri Journal of Mathematical Sciences, 2013
This paper deals with functionally Hausdorff spaces. Some separation axioms which are introduced recently are studied in this paper. An interesting categorical properties of functionally Hausdorff spaces are given. Finally, we characterize topological spaces for which the functionally Hausdorff-reflection is a spectral space.
openaire   +3 more sources

Noncommmutative theorems: Gelfand Duality, Spectral, Invariant Subspace, and Pontryagin Duality [PDF]

open access: yes, 2005
We extend the Gelfand-Naimark duality of commutative C*-algebras, "A COMMUTATIVE C*-ALGEBRA -- A LOCALLY COMPACT HAUSDORFF SPACE" to "A C*-ALGEBRA--A QUOTIENT OF A LOCALLY COMPACT HAUSDORFF SPACE".
Patel, Mukul S.
core  

Arbitrary‐Scale Point Cloud Upsampling via Enhanced Geometric Spatial Consistency

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT Point cloud upsampling is an essential yet challenging task in various 3D computer vision and graphics applications. Existing methods often struggle with limitations such as the generation of outliers or shrinkage artifacts. Additionally, these methods usually ignore the overall spatial structure of point clouds, leading to suboptimal results.
Xianjing Cheng   +5 more
wiley   +1 more source

Hausdorff closed extensions of pre-uniform spaces

open access: yesApplied General Topology, 2012
The family of densely finite open covers of a Hausdorff space X determines a completable pre-uniformity on X and the canonical completion X is Hausdorff closed.
Adalberto García-Máynez   +1 more
doaj   +1 more source

On the Dimension of Paracompact Hausdorff Spaces [PDF]

open access: yesNagoya Mathematical Journal, 1955
This short note gives the generalized sum theorem for Lebesgue dimension of paracompact Hausdorff spaces. Our theorem, though it is a generalization of Mr. Morita’s sum theorem for fully normal spaces [3, Theorem 3. 2] which is essentially based on his generalized sum theorem for normal spaces [3, Theorem 3.1], is obtained by very brief arguments ...
openaire   +3 more sources

Minimality of planes in normed spaces

open access: yes, 2012
We prove that a region in a two-dimensional affine subspace of a normed space $V$ has the least 2-dimensional Hausdorff measure among all compact surfaces with the same boundary.
A.C. Thompson   +12 more
core   +1 more source

Market Allocations Under Conflation of Goods

open access: yesInternational Economic Review, EarlyView.
ABSTRACT We study competitive equilibria in exchange economies when a continuum of goods is conflated into a finite set of commodities. The design of conflation choices affects the allocation of scarce resources among agents, by constraining trading opportunities and shifting competitive pressures.
Niccolò Urbinati, Marco LiCalzi
wiley   +1 more source

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