Separating Two Simple Polygons by a Sequence of Translations.
Sestrojení pravidelného sedmnáctiúhelníku
Several observations about Maneeals - a peculiar system of lines
For an arbitrary triangle ABC and an integer n we define points Dn, En, Fn on the sides BC, CA, AB respectively, in such a manner that |AC|n|AB|n=|CDn||BDn|,|AB|n|BC|n=|AEn||CEn|,|BC|n|AC|n=|BFn||AFn|. Cevians ADn, BEn, CFn are said to be the Maneeals of order n. In this paper we discuss some properties of the Maneeals and related objects.
Solution d'un problème de géométrie
Stereographische Projektion und quadratisches Spurenprinzip im R4
Sur la construction de la normale dans un certain mode de génération des courbes planes
Sur le rayon de courbure des coniques
Sur les polygones inscrits et circonscrits à la fois à deux cercles.
Sur un élément du triangle rectiligne ; symédiane
Sur un triangle dont les côtés sont exprimés par des nombres entiers, premiers entre eux et dans lequel le rapport de deux angles est un nombre entier
Symmetrical Patterns by Means of Contour Plots
Tangential Symmetries of Planar Curves and Space Curves
The return sequence of the Bowen-Series map for punctured surfaces
For a non-compact hyperbolic surface M of finite area, we study a certain Poincaré section for the geodesic flow. The canonical, non-invertible factor of the first return map to this section is shown to be pointwise dual ergodic with return sequence (aₙ) given by aₙ = π/(4(Area(M) + 2π)) · n/(log n). We use this result to deduce that the section map itself is rationally ergodic, and that the geodesic flow associated to M is ergodic with respect to the Liouville measure. ...
The Steiner Ratio Conjecture for Cocircular Points.
The use of visual schema to find properties of a hexagon
Théorème sur les surfaces
To construct a regular polygon of 17 sides. (Mit 1 Figur im Text)
Trisection de l'angle au moyen du limaçon de Pascal
Tro- i četverokut u savezu sa aritmetičkimi i geometrijskimi progresijami
Two-distance preserving functions.