Baumann Eduard, Fribourg, Switzerland

Schnitte von Zylindern (deutsch)

3D printings available ! 3D

Updated / mise jour / nachgef hrt : 6.5.2024

What is the maximum volume for a not strechable cushion which can be flattened to a square? Click on the cushion!

Convex polyhedra with equal length edges.

(2021) Indem man bei NearMissPolyedern die Winkel in den n-Ecken, n>3, freigibt, kann man Gleichkanter gewinnen. So geschehen bei den Johnson NearMisses.

(2014) Gleichfl cher. Convex polyhedra with equal area faces. Click the picture.

HECTOHEDRA

On this page I showed aready collected equal edge length polyhedra and also equal area face polyhedra. Now I collected the convex polyhedra with exactly 100 faces. The collection with 131 elements is certainly not complet but shows an interesting variety of forms. We have also a special class with 50 elements where the edgelengthes are equal. The elements are ordered by roundness (surface area if volume is one). People which are interested in the coordinates of these polyhedra can download the zipped stel-files for the program GreatStella. Today may 2017 both roundest cases are beaten and known to me.

Nicht unendliche viele sondern nur eine gegebene Anzahl einheitlich grosser Kugeln m glichst eng packen, ist ein interessantes Thema. Siehe dazu

How big can a n-polygon be if it must be covered by m n-polygons of side 1? Click on the sketch!

Ich wandere gern (hiking, randonn ), siehe:

Site for programming contests:

I'm a fan of 4D cubing:

An Knoten interessiert ? Dann unbedingt: http://knotplot.com/

Try LaserTank, a Sokoban like programm !

Keywords:

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