Results 11 to 20 of about 14,046 (219)
Some Examples of Calculation of Massless and Massive Feynman Integrals
Particles, 2021 We show some examples of calculations of massless and massive Feynman integrals.
Anatoly V. Kotikov
doaj +1 more source
Singularity analysis via the iterated kernel method [PDF]
Discrete Mathematics & Theoretical Computer Science, 2013 We provide exact and asymptotic counting formulas for five singular lattice path models in the quarter plane. Furthermore, we prove that these models have a non D-finite generating function.
Stephen Melczer, Marni Mishna
doaj +1 more source
Kinematic Comparisons of Hybrid Mechanisms for Bone Surgery: 3-PRP-3-RPS and 3-RPS-3-PRP
Machines, 2022 This paper proposes an approach to derive the Jacobian matrix of a hybrid mechanism by applying a velocity operator to the transformation matrix. This Jacobian matrix is capable of deducing hybrid singularities, which cannot be identified by using the ...
Christopher Reinaldo +3 more
doaj +1 more source
Nullcone Fronts of Spacelike Framed Curves in Minkowski 3-Space
Mathematics, 2021 The investigation of objects in Minkowski space is of great significance, especially for those objects with mathematical and physical backgrounds. In this paper, we study nullcone fronts, which are formed by the light rays emitted from points on a ...
Pengcheng Li, Donghe Pei
doaj +1 more source
Methis: Studia Humaniora Estonica, 2013 The writings of Jüri Üdi (alter ego of Estonian poet and actor Juhan Viiding, from 1968 to 1978) display the reality of something that could be referred to as a joyful dimension of anguish.
Liisi Rünkla
doaj +1 more source
Singularities of the eta function of first order differential operators
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012 We report on a particular case of the paper [7], joint with Raphaël Ponge, showing that generically, the eta function of a first-order differential operator over a closed manifold of dimension n has first-order poles at all positive integers of the form ...
Loya Paul, Moroianu Sergiu
doaj +1 more source
International Journal of Applied Mechanics and Engineering, 2015 Free vibration analysis of homogeneous and isotropic annular thin plates by using Green’s functions is considered. The formula of the influence function for uniform thin circular and annular plates is presented in closed-form.
K.K. Żur
doaj +1 more source
Probing graphene’s nonlocality with singular metasurfaces
Nanophotonics, 2020 Singular graphene metasurfaces, conductivity gratings realized by periodically suppressing the local doping level of a graphene sheet, were recently proposed to efficiently harvest THz light and couple it to surface plasmons over broad absorption bands ...
Galiffi Emanuele +4 more
doaj +1 more source
Singular Surfaces of Osculating Circles in Three-Dimensional Euclidean Space
Mathematics, 2023 In this paper, we study the surfaces of osculating circles, which are the sets of all osculating circles at all points of regular curves. Since the surfaces of osculating circles may be singular, it is necessary to investigate the singular points of ...
Kemeng Liu, Zewen Li, Donghe Pei
doaj +1 more source
Evolutoids and pedaloids of frontals on timelike surfaces
Open Mathematics, 2023 In this article, we define evolutoids and pedaloids of frontals on timelike surfaces in Minkowski 3-space. The evolutoids of frontals on timelike surfaces are not only the generalization of evolutoids of curves in the Minkowski plane but also the ...
Wang Yongqiao +3 more
doaj +1 more source