Zobrazeno 1 - 10
of 146
pro vyhledávání: '"Tibor Tarnai"'
Publikováno v:
Symmetry, Vol 14, Iss 2, p 232 (2022)
There is increasing interest in two-dimensional and quasi-two-dimensional materials and metamaterials for applications in chemistry, physics and engineering. Some of these applications are driven by the possible auxetic properties of such materials.
Externí odkaz:
https://doaj.org/article/0171d3ed3b1f46ae9bb7accfecc592e0
Publikováno v:
Symmetry, Vol 13, Iss 11, p 2133 (2021)
Background: Some medical and technological tasks lead to the geometrical problem of how to cover the unit circle as much as possible by n congruent circles of given radius r, while r varies from the radius in the maximum packing to the radius in the
Externí odkaz:
https://doaj.org/article/edbee9e084774953989571de9d919abb
Autor:
Endre Makai, Tibor Tarnai
Publikováno v:
Studia Scientiarum Mathematicarum Hungarica.
The motions of a bar structure consisting of two congruent tetrahedra are investigated, whose edges in their basic position are the face diagonals of a rectangular parallelepiped. The constraint of the motion is the following: the originally intersec
Autor:
Janos Lőrincz, Emöke Imre, Stephen Fityus, Phong Q. Trang, Tibor Tarnai, István Talata, Vijay P. Singh
Publikováno v:
Entropy, Vol 17, Iss 5, Pp 2781-2811 (2015)
This paper deals with three grading entropy-based rules that describe different soil structure stability phenomena: an internal stability rule, a filtering rule and a segregation rule. These rules are elaborated on the basis of a large amount of labo
Externí odkaz:
https://doaj.org/article/4338cefe22cd4da9a3145d560add86ae
Publikováno v:
Symmetry, Vol 6, Iss 2, Pp 368-382 (2014)
Scalar mobility counting rules and their symmetry extensions are reviewed for finite frameworks and also for infinite periodic frameworks of the bar-and-joint, body-joint and body-bar types. A recently published symmetry criterion for the existence o
Externí odkaz:
https://doaj.org/article/2fe28ce4e6b744b89fd163d7b8c8fee6
Autor:
Tibor Tarnai, Endre Makai
Publikováno v:
Elemente der Mathematik. 76:1-9
We consider vertex colourings of the dodecahedral graph with five colours, such that on each face the vertices are coloured with all the five colours. We show that the total number of these colourings is 240. All such colourings can be obtained from
Publikováno v:
Symmetry
Volume 13
Issue 11
Symmetry, Vol 13, Iss 2133, p 2133 (2021)
Volume 13
Issue 11
Symmetry, Vol 13, Iss 2133, p 2133 (2021)
Background: Some medical and technological tasks lead to the geometrical problem of how to cover the unit circle as much as possible by n congruent circles of given radius r, while r varies from the radius in the maximum packing to the radius in the
Publikováno v:
Symmetry, Vol 9, Iss 3, p 41 (2017)
Amongst the convex polyhedra with n faces circumscribed about the unit sphere, which has the minimum surface area? This is the isoperimetric problem in discrete geometry which is addressed in this study. The solution of this problem represents the cl
Externí odkaz:
https://doaj.org/article/68a6d5bbf7ee47649429e39090db63a3
Publikováno v:
Journal of Computational Geometry, Vol 5, Iss 1 (2014)
How must n equal circles of given radius r be placed so that they cover as great a part of the area of the unit circle as possible? In this Part II of a two-part paper, a conjectured solution of this problem for n = 5 is given for r varying from the
Externí odkaz:
https://doaj.org/article/4252069d85644484919eef21a82eb601
Publikováno v:
Journal of Computational Geometry, Vol 5, Iss 1 (2014)
How must n equal circles of given radius be placed so that they cover as great a part of the area of the unit circle as possible? To analyse this mathematical problem, mechanical models are introduced. A generalized tensegrity structure is associated
Externí odkaz:
https://doaj.org/article/d189d0b73f7c49949ac76661b62cbf20