Results 81 to 90 of about 2,948 (187)
Frenet frames and invariants of timelike ruled surfaces
Ain Shams Engineering Journal, 2013 In this study we give the Frenet frames and Frenet invariants of timelike ruled surfaces. We show that a timelike ruled surface and its directing cone have the same base of Frenet frame.
Mehmet Önder, H. Hüseyin Uğurlu
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Fortschritte der Physik, Volume 74, Issue 3, March 2026.ABSTRACT We propose a manifestly duality‐invariant, Lorentz‐invariant, and local action to describe quantum electrodynamics in the presence of magnetic monopoles that derives from Sen's formalism. By employing field strengths as the dynamical variables, rather than potentials, this formalism resolves longstanding ambiguities in prior frameworks.
Aviral Aggarwal +2 more
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Characterizations of Spacelike Slant Helices In Minkowski 3-Space
Annals of the Alexandru Ioan Cuza University - Mathematics, 2014 Abstract In this paper, we investigate tangent indicatrix, principal normal indicatrix and binormal indicatrix of a spacelike curve with spacelike, timelike and null principal normal vector in Minkowski 3-space E3 1 and we construct their Frenet equations and curvature functions.
Gök, I. +4 more
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Random Structures &Algorithms, Volume 68, Issue 2, March 2026.ABSTRACT We study the contact process on the long‐range percolation cluster on ℤ$$ \mathbb{Z} $$ where each edge ⟨i,j⟩$$ \left\langle i,j\right\rangle $$ is open with probability |i−j|−s$$ {\left|i-j\right|}^{-s} $$ for s>2$$ s>2 $$. Using a renormalization procedure, we apply the Peierls‐type argument to prove that the contact process dies out if the ...
Pablo A. Gomes +3 more
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Geometric approaches to establish the fundamentals of Lorentz spaces $\mathbb{R}_2^3$ and $\mathbb{R}_1^2$ [PDF]
Mathematica BohemicaThe aim of this paper is to investigate the orthogonality of vectors to each other and the Gram-Schmidt method in the Minkowski space $\mathbb{R}_2^3$.
Sevilay Çoruh Şenocak, Salim Yüce
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On parallel surfaces in minkowski 3-space
, 2013 In this paper, we study on some properties of parallel surfaces in Minkowski 3-space. The results given in this paper were given in Euclidean space by [7, 8]. By using these two former studies, we show these properties in Minkowski 3-space. Also we give the relation among the fundamental forms of parallel surfaces in Minkowski 3-space.
UNLUTURK, Yasin, OZUSAGLAM, Erdal
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Liquid Phase TEM of Diffusing Emulsion Droplets
Small, Volume 22, Issue 13, 3 March 2026.Motion of emulsion droplets was observed via in situ liquid phase transmission electron microscopy. Analysis revealed that the motion is self‐affine and influenced by multiple stochastic processes, as well as a fractal landscape created by the electron beam.
Maria A. Vratsanos +4 more
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Phenomenal knowledge and phenomenal causality
Noûs, Volume 60, Issue 1, Page 212-232, March 2026.Abstract There has been extensive debate over whether we can have phenomenal knowledge in the case of epiphenomenalism. This article aims to bring that debate to a close. I first develop a refined causal account of knowledge—one that is modest enough to avoid various putative problems, yet sufficiently robust to undermine the epiphenomenalist position.
Lei Zhong
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The Distinctness of Objects Near and Far
Philosophy and Phenomenological Research, Volume 112, Issue 2, Page 406-420, March 2026.ABSTRACT Philosophers working on the metaphysics of persistence typically do not extend their views to the distinctness of objects at a single time. I argue that we can provide criteria to distinguish objects across time if and only if we can provide criteria to distinguish objects at a time. Furthermore, I endorse a stronger claim.
Erica Shumener
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Isophote Curves on Timelike Surfaces in Minkowski 3-Space [PDF]
Annals of the Alexandru Ioan Cuza University - Mathematics, 2014 Isophote comprises a locus of the surface points whose normal vectors make a constant angle with a fixed vector. In this paper, isophote curves are studied on timelike surfaces in Minkowski 3-space E31. The axises of spacelike and timelike isophote curves are found via their Darboux frames.
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