Results 21 to 30 of about 2,302,459 (290)

Multilocal invariants for the classical groups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
Multilocal higher-order invariants, which are higher-order invariants defined at distinct points of representation space, for the classical groups are derived in a systematic way.
Paul F. Dhooghe
doaj   +1 more source

Douglas' Factorization Theorem and Atomic System in Hilbert Pro-$C^{\ast}$-Modules [PDF]

open access: yesSahand Communications in Mathematical Analysis
In the present paper, we introduce  the generalized inverse operators, which have an exciting role in operator theory. We establish Douglas' factorization theorem type  for  the Hilbert pro-$C^{\ast}$-module.We introduce the notion of atomic system and ...
Mohamed Rossafi   +2 more
doaj   +1 more source

DIFFERENTIAL GEOMETRY OF THE q-PLANE [PDF]

open access: yesInternational Journal of Modern Physics A, 2000
Hopf algebra structure on the differential algebra of the extended q-plane is defined. An algebra of forms which is obtained from the generators of the extended q-plane is introduced and its Hopf algebra structure is given.
Çelik, Sultan, Çelik, Salih
openaire   +3 more sources

Geometry of skeletal structures and symmetry sets [PDF]

open access: yes, 2012
In this thesis we study the geometry of symmetry sets and skeletal structures. The relationship between a symmetry point (skeletal point) and the associated midlocus point is studied and the impact of the singularity of the radius function on this ...
Alghanemi, Azeb Zain Jafar
core   +6 more sources

Differential geometry of gerbes

open access: yesAdvances in Mathematics, 2005
78 pages. Uses XyPic. A number of significant additions have been incorporated into this version. This includes a description of the coboundary relations in full generality, as well as a Cech-de Rham interpretation of the cocycle and coboundary relations for the 3-curvature of a gerbe with connection.
Breen, Lawrence, Messing, William
openaire   +2 more sources

Functional Segmentation for Preoperative Liver Resection Based on Hepatic Vascular Networks

open access: yesIEEE Access, 2021
Successful liver resection relies on accurate estimation of future liver remnant volume (FLRV). According to Couinaud's scheme, a liver is composed of eight functionally independent segments, each of which has its own vascular in- and out-flow tracks ...
Doan Cong Le   +3 more
doaj   +1 more source

Using Differential Geometry to Revisit the Paradoxes of the Instantaneous Frequency

open access: yesIEEE Open Access Journal of Power and Energy, 2022
This paper proposes a general framework to interpret the concept of Instantaneous Frequency (IF) in three-phase systems. The paper first recalls the conventional frequency-domain analysis based on the Fourier transform as well as the definition of IF ...
Federico Milano   +4 more
doaj   +1 more source

A Set of Axioms for Differential Geometry [PDF]

open access: yesProceedings of the National Academy of Sciences, 1931
Publisher Summary This chapter discusses a set of axioms for differential geometry. The chapter presents the axioms that are intended to describe the class of manifolds of n dimensions to which the theories, grouped together under the heading of differential geometry, are applicable.
Veblen, O., Whitehead, J. H. C.
openaire   +3 more sources

Geometrical modeling and numerical analysis of edge dislocation

open access: yesNihon Kikai Gakkai ronbunshu, 2021
In this study, we conduct modeling and numerical analysis of a straight edge dislocation in a three-dimensional geometrically nonlinear elastic medium.
Shunsuke KOBAYASHI, Ryuichi TARUMI
doaj   +1 more source

On preferred point geometry in statistics [PDF]

open access: yes, 2001
A brief synopsis of progress in differential geometry in statistics is followed by a note of some points of tension in the developing relationship between these disciplines. The preferred point nature of much of statistics is described and suggests the
Marriott, P.   +9 more
core   +1 more source

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