Results 11 to 20 of about 199,387 (77)

Mathematical Foundations of Radial Coherential Dynamics — Paper I: Coherent Fields, Adjacency Structure, and Pre-Metric Geometry

open access: green
This work establishes the first mathematical foundations of Radial Coherential Dynamics (RCD) without presupposing spacetime geometry. Version 1.1 introduces the adjacency structure ∼, resolving the dimensional-collapse problem of v1.0 and allowing spatial structure to emerge independently of coherence. Starting from four primitives — a coherence field,
Cerezo, Arturo, AI Collaborative Panel
  +4 more sources

Spinorial Characterization of CR Structures, I [PDF]

open access: yes, 2014
We characterize certain CR structures of arbitrary codimension (different from 3, 4 and 5) on Riemannian Spin$^c$ manifolds by the existence of a Spin$^c$ structure carrying a strictly partially pure spinor field.
Hererra, Rafael, Nakad, Roger
core  

An asymptotic dimension for metric spaces, and the 0-th Novikov-Shubin invariant

open access: yes, 2001
A nonnegative number d_infinity, called asymptotic dimension, is associated with any metric space. Such number detects the asymptotic properties of the space (being zero on bounded metric spaces), fulfills the properties of a dimension, and is invariant ...
Guido, Daniele, Isola, Tommaso
core  

Geometric Reasoning with polymake

open access: yes, 2005
The mathematical software system polymake provides a wide range of functions for convex polytopes, simplicial complexes, and other objects. A large part of this paper is dedicated to a tutorial which exemplifies the usage. Later sections include a survey
Gawrilow, Ewgenij, Joswig, Michael
core   +1 more source

Geometric flows and (some of) their physical applications

open access: yes, 2005
The geometric evolution equations provide new ways to address a variety of non-linear problems in Riemannian geometry, and, at the same time, they enjoy numerous physical applications, most notably within the renormalization group analysis of non-linear ...
Bakas, I.
core  

Classification of LRS Bianchi-I spacetime in context of f(T) gravity via its self-similar symmetry. [PDF]

open access: yesPLoS One
Sidaoui R   +5 more
europepmc   +1 more source

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