Zobrazeno 1 - 10
of 289
pro vyhledávání: '"Tangent lines to circles"'
Publikováno v:
Hand Surgery and Rehabilitation. 40:472-476
Traditionally, the angle between the intersecting central axes (lateral projection intersecting central axes - LCA) of the proximal and distal fragments of metacarpal fractures is measured on radiographs. We recommend using the angle between the inte
Autor:
Mark D. Hogue, Dominic Scarcelli
Publikováno v:
International Journal of Mathematical Education in Science and Technology. 53:2391-2421
Tangent lines are often first introduced to students in geometry during the study of circles. The topic may be repeatedly reintroduced to students in different contexts throughout their schooling, ...
Publikováno v:
L’Enseignement Mathématique. 66:63-81
We construct a topological invariant of algebraic plane curves, which is in some sense an adaptation of the linking number of knot theory. This invariant is shown to be a generalization of the I-invariant of line arrangements developed by the first a
Publikováno v:
Proceedings of the Steklov Institute of Mathematics. 310:137-147
In 1970, Bohm formulated a three-dimensional version of his two-dimensional theorem that a division of a plane by lines into circumscribed quadrilaterals necessarily consists of tangent lines to a given conic. Bohm did not provide a proof of his thre
Autor:
Dingkang Wang, Banghe Li
Publikováno v:
Journal of Systems Science and Complexity. 33:2124-2138
This paper proves three statements of Schubert about cuspal cubic curves in a plane by using the concept of generic point of Van der Waerden and Weil and Ritt-Wu methods. They are relations of some special lines: 1) For a given point, all the curves
Autor:
PooGyeon Park, JunMin Park
Publikováno v:
Journal of the Franklin Institute. 357:4316-4327
This paper proposes two inequality lemmas for the stability analysis of time-delay systems to obtain the stability criteria in terms of linear matrix inequalities from ones in terms of the convex of concave finite-interval quadratic polynomials. The
Publikováno v:
Beta: Jurnal Tadris Matematika, Vol 12, Iss 2, Pp 94-108 (2019)
[English]: This study was aimed to describe the abstraction process of students with different cognitive styles in learning common tangent lines of two circles using recognizing, building-with, and construction (RBC) model. This qualitative research
Autor:
Donghe Pei, Xin Zhao
Publikováno v:
Mathematics; Volume 9; Issue 22; Pages: 2852
Mathematics, Vol 9, Iss 2852, p 2852 (2021)
Mathematics, Vol 9, Iss 2852, p 2852 (2021)
In this paper, we consider the pedal curves of the mixed-type curves in the Lorentz–Minkowski plane R12. The pedal curve is always given by the pseudo-orthogonal projection of a fixed point on the tangent lines of the base curve. For a mixed-type c
Publikováno v:
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
Scientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
A high-precision camera intrinsic parameters calibration method based on concentric circles was proposed. Different from Zhang’s method, its feature points are the centers of concentric circles. First, the collinearity of the projection of the cent
Autor:
Ozlem Cezikturk
Publikováno v:
Academic Perspective Procedia. 2:37-46
Wasan geometry flourished in Edo period of Japan as arty, multiple solutioned and systematic. Teachers are not open and papers are not evaluated. Multiple solutions are seen in parallel with advanced mathematics thinking. 80 middle school and 37 high