Results 71 to 80 of about 975,864 (308)
Noncommutative spectral geometry of Riemannian foliations [PDF]
arXiv, 1997 We construct spectral triples in a sense of noncommutative differential geometry, associated with a Riemannian foliation on a compact manifold, and describe its dimension spectrum.
arxiv
Determination of the number of texture segments using wavelets
Electronic Journal of Differential Equations, 2001 This paper presents a robust method of determining the number of texture segments in an image. We take an $N imes N$ image and decompose it into $n imes n$ blocks.
Joseph P. Havlicek, Peter C. Tay
doaj
Differential geometry and demand function
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e NaturaliThe presented work is devoted to the differential geometric analysis of the demand function. Analysis of the neoclassic approach leads to the introduction of the generalized demand function.
Samvel Haroutunian
doaj +1 more source
Curvature in Synthetic Differential Geometry of Groupoids [PDF]
arXiv, 2007 We study the fundamental properties of curvature in groupoids within the framework of synthetic differential geometry. As is usual in synthetic differential geometry, its combinatorial nature is emphasized. In particular, the classical Bianchi identity is deduced from its combinatorial one.
arxiv
Differential Geometry of generalized almost quaternionic structures, 1 [PDF]
arXiv, 1997 The fibre bundles adjoint to generalized almost quaternionic structures are studied. The most important classes of generalized almost quaternionic manifolds are considered.
arxiv
Analytical ruled surfaces and their complete classification
Structural Mechanics of Engineering Constructions and Buildings, 2020 The aim of the work - to give the possibility to expand mind of designers and architects projecting structures in the form of traditional and non-canonical ruled surfaces.
Sergey N. Krivoshapko
doaj +1 more source
Soliton equations in 2+1 dimensions and Differential geometry of curves/surfaces [PDF]
arXiv, 1999 A connection between differential geometry and soliton equations is ...
arxiv
International 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
Differential Invariants of Conformal and Projective Surfaces
Symmetry, Integrability and Geometry: Methods and Applications, 2007 We show that, for both the conformal and projective groups, all the differential invariants of a generic surface in three-dimensional space can be written as combinations of the invariant derivatives of a single differential invariant. The proof is based
Evelyne Hubert, Peter J. Olver
doaj
SORM DG - an efficient SORM based on differential geometry
REM: International Engineering JournalThe first order reliability method (FORM) efficiently performs first order structural reliability analysis, but with limited accuracy. On the other hand, the traditional second order reliability method (SORM) was established to improve the results of ...
Emmanoel Guasti Ferreira +3 more
doaj +1 more source