Results 41 to 50 of about 1,037 (71)
DUAL TIMELIKE NORMAL AND DUAL TIMELIKE SPHERICAL CURVES IN DUAL MINKOWSKI SPACE
: 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]
Kunzinger M, Steinbauer R.
europepmc +1 more source
SEMI-RIEMANN METRİKLİ DOUBLE TANJANT DEMETİN DİFERENSİYEL GEOMETRİSİ
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]
Schinnerl B, Steinbauer R.
europepmc +1 more source
ON NULL CURVES ON SURFACES AND NULL VECTORS IN LORENTZ SPACE
: 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
: 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
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
Hyperbolic angles in Lorentzian length spaces and timelike curvature bounds. [PDF]
Beran T, Sämann C.
europepmc +1 more source
Curvature properties of φ-null Osserman Lorentzian S-manifolds
Brunetti Letizia, Caldarella Angelo
doaj +1 more source