Results 21 to 30 of about 61 (36)

Museization of Steiner's 10 Questions on the complete quadrilateral [PDF]

open access: yes, 2019
Mathematics are underrepresented in Science and Technology museums. Using Steiner s 10 theorems on the complete quadrilateral as a common trail, the purpose of this paper has been to create an exhibit to illustrate what mathematics are and it s ...
Alemany Flos, Joan
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Loci of 3-periodics in an Elliptic Billiard: why so many ellipses?

open access: yes, 2020
We analyze the family of 3-periodic (triangular) trajectories in an Elliptic Billiard. Specifically, the loci of their Triangle Centers such as the Incenter, Barycenter, etc.
Garcia, Ronaldo   +2 more
core  

Convex Set Approximation Problems in Quantum Information [PDF]

open access: yes, 2020
This thesis investigates methods to approximate convex sets which involve minimizing the Hausdorff metric between a set and certain subsets. We begin by giving a lower bound for the Hausdorff metric between a hypersphere and a circumscribed simplex.
Fernandes, Eric
core   +1 more source

Hilbert's Error?

open access: yes, 2018
It is well known that a center of a given circle cannot be constructed using only a straightedge and that this was proven by David Hilbert. Still it is not so clear what kind of object is proven to be non-existing. We analyze different attempts to define
Shen, Alexander
core   +2 more sources

Some new inequalities for triangle [PDF]

open access: yes, 2018
U ovom radu dokazujemo osam novih nejednakosti za trokut. Te nejednakosti se temelje na jednoj dvostrukoj algebarskoj nejednakosti koju dokazujemo u teoremu 1. U dokazima koristimo više raznih jednakosti koje se odnose na elemente trokuta.
Šefket Arslanagić
core   +1 more source

The Construction of Triangles Having Given Three Elements [PDF]

open access: yes, 1938
It is with great pleasure and satisfaction that I dedicate these following pages to those who are especially interested in mathematics, to those who are more geometrically than algebraically inclined, and in particular to my students in mathematics.
Wolter, Mary Eugene
core   +1 more source

Polygons, conics and billiards [PDF]

open access: yes, 2020
In this expository article we will describe some elementary properties of billiards and Poncelet maps and special attention is dedicated to N-periodic orbits. In general, problems involving billiards are easy to state and under-standing, and difficult or
Garcia, Ronaldo A.
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A sustainable approach in additive manufacturing with recycled material [PDF]

open access: yes, 2018
LAUREA MAGISTRALELa stampa 3D è un termine per descrivere la tecnologia utilizzata per la produzione rapida di oggetti 3D direttamente dai file CAD (computer aided design).
HAJIFATHALIHA, SARA
core  

A note on the planar triangles in Minkowski spacetime

open access: yes
The geometry of 2D Minkowski spacetime $\mathbb{R}^{1,1}$ (or Minkowski plane) is similar but fundamentally different from the more familiar Euclidean plane geometry.
Cao, Yan
core  

TEOREMA GERGONNE LUAR PADA SEGITIGA SIKLIK [PDF]

open access: yes
Teorema Gergonne merupakan suatu teorema yang berlaku pada sebuah segitiga yang membahas tentang garis yang dibentuk dari titik-titik puncak segitiga lalu dihubungkan dengan titik singgung lingkaran pada sisi dihadapannya yang konkuren di satu titik ...
M. Federic, -
core  

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