Results 41 to 50 of about 1,037 (71)

DUAL TIMELIKE NORMAL AND DUAL TIMELIKE SPHERICAL CURVES IN DUAL MINKOWSKI SPACE

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2009
: In this paper, we give characterizations of dual timelike normal and dual timelike spherical curves in the dual Minkowski 3-space and we show that every dual timelike normal curve is also a dual timelike spherical curve.
Mehmet ÖNDER
doaj  

Null Distance and Convergence of Lorentzian Length Spaces. [PDF]

open access: yesAnn Henri Poincare, 2022
Kunzinger M, Steinbauer R.
europepmc   +1 more source

SEMI-RIEMANN METRİKLİ DOUBLE TANJANT DEMETİN DİFERENSİYEL GEOMETRİSİ

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2009
Özet: Bu çalışmada, diferensiyellenebilir bir manifold üzerindeki bir semi-Riemann metriğin ikinci mertebeden tam yüseltilmesi ile elde edilen nin bir semi-Riemann metriği olduğu gösterildi ve bu metriğin Levi-Civita koneksiyonu bileşenler cinsinden
İsmet AYHAN
doaj  

A note on the Gannon-Lee theorem. [PDF]

open access: yesLett Math Phys, 2021
Schinnerl B, Steinbauer R.
europepmc   +1 more source

ON NULL CURVES ON SURFACES AND NULL VECTORS IN LORENTZ SPACE

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2009
: In this work, we compare the Darboux frame and the Frenet frame of a null curve lying on a spacelike surface in the three-dimensional Lorentz space, and we show that the normal curvature of the curve is a constant.
A. Ceylan ÇÖKEN
doaj  

ON THE DETERMINATION OF A DEVELOPABLE TIMELIKE RULED SURFACE

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2009
: This paper gives a method for determining a developable timelike ruled surface by using dual vector calculus. A developable timelike ruled surface can be parameterized in the form m(t, u) =p(t) +u x(t) ( p(t) is called the base curve of m(t, u)).
Mustafa KAZAZ
doaj  

On skew loops, skew branes and quadratic hypersurfaces

open access: yes, 2003
A skew brane is an immersed codimension 2 submanifold in affine space, free from pairs of parallel tangent spaces. Using Morse theory, we prove that a skew brane cannot lie on a quadratic hypersurface.
Tabachnikov, Serge
core   +1 more source

The future is not always open. [PDF]

open access: yesLett Math Phys, 2020
Grant JDE   +3 more
europepmc   +1 more source

Curvature properties of φ-null Osserman Lorentzian S-manifolds

open access: yesOpen Mathematics, 2014
Brunetti Letizia, Caldarella Angelo
doaj   +1 more source

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