Triangulations of Ralph Heiner Buchholz

(a.k.a. SWE-Teufel, a.k.a. Rebecca's dad)

Update history

The good christian should beware of mathematicians, and all those who make empty prophecies. The danger already exists that the mathematicians have made a covenant with the devil to darken the spirit and to confine man in the bonds of hell. --- St. Augustine (354-430 A.D.)

Trailers

The following thumbnails provide links to excerpts from some of the papers below.

Perfect triangle	Epitrochoidal mixer	Perfect pyramid	Newton meets Diophantus
Minimizing polygon	Dissolving salt	Bio-topology	On Triangles
Robbins pentagons	Infinity Heresy	Kandelhardt paradox	Missing Galilean
Elliptic Surface	Ant antics	Levitation

Über-cool sites

Dimensions	Visualise the 4th dimension.
Cornell Historical Mathematics	Scanned English mathematics.
Gallica	Scanned French mathematics.
Göttingerdigitalisierungszentrum	Scanned German mathematics.
Harvard multimedia	The inner life of a cell.
Hero's Pneumatics	Hero translated to english.
Number Theory Web	Things of interest to number theorists.
Seventeen or bust	Search for the smallest Sierpinski number.

Papers

Like most archaeological sites this site is ordered from most recent on top to the oldest layers on the bottom.

Date	Title
Apr 2009	Cyclic pentagons with rational sides and area (draft) co-author: Ezra A. Brown
Jul 2008	An edge minimization problem for regular polygons co-author: Warwick de Launey
Apr 2006	On a geometric proposition, translated from the german, Ueber einen geometrischen Satz by L. Fejes
Nov 2005	Cyclic rational area polygons, talk given at the Fall meeting of the MAA, Montgomery College, Germantown.
Mar 2005	Integrality in Algebraic Geometry, translated from the german, Die Ganzzahligkeit in der Algebraischen Geometrie by Hermann Schubert
Aug 2004	Square-like triangles (draft)
Sep 2003	The Infinity Heresy (draft)
Feb 2003	Symmetries of triangles with two rational medians (submitted) co-authors: Zoltan F. Bacskai, Randall L. Rathbun, Michael J. Smith
Jul 2001	Cyclic n-gons with rational area co-author: James A. MacDougall
Jan 1999	When Newton met Diophantus : A study of rational-derived polynomials and their extension to quadratic fields co-author: James A. MacDougall
Aug 1998	Heron Quadrilaterals with sides in arithmetic or geometric progressions co-author: James A. MacDougall
Apr 1998	Pseudopowerful Numbers (draft)
Mar 1998	Heron Triangles and elliptic curves co-author: Randall L. Rathbun
Jan 1997	An infinite set of Heron triangles with 2 rational medians co-author: Randall L. Rathbun
Aug 1996	Volume of an N-dimensional Simplex (draft) co-author: Michael J. Smith
Jun 1996	The square, the triangle and the hexagon co-author: Warwick de Launey
Jun 1995	Triangles with 3 rational medians
Feb 1995	Rational-derived quartics
Jan 1995	An observation on Rolle's problem
Apr 1991	Perfect Pyramids
Jul 1990	Epitrochoidal Mixer
Nov 1989	On Triangles with rational altitudes, angle bisectors or medians
Jul 1986	Polygons with Integral Internal Angles
Nov 1985	Spiral Polygon Series
Jul 1985	Mayan Calendar
Apr 1985	Topology in Biology
Oct 1983	Gathematics: Mathematics in the Gas Industry
Nov 1981	Riemann Zeta Function

Notebooks

Date	Title
1983-7-16	Notebook 6 Mathematics wins---but physics makes a token appearance.
1982-7-16	Notebook 5 The struggle continues.
1980-9-26	Notebook 4 Mathematics, Physics and archaeology---a struggle for supremacy.
1980-2-10	Notebook 3 Recreational mathematics emerges from the back of one little matchbox at ComSteel.
1979-early	Notebook 2 The influence here is Martin Gardener's Mathematical Games as well as university maths.
1972	Notebook 1 The one that started it all. Heavily influenced by the 1972 World Book Science Yearbook.

Miscellaneous

... If you happen to own a Toshiba Portege 3010CT you might be interested in porting Linux to it without using a boot floppy.

... In fact it is now much easier to dual boot a Toshiba Satellite T135D from a usb-stick.

... Since I keep forgetting how to dual boot I finally wrote down how to prepare a windows partition for dual booting.

... Ever had fun with a solar bag? Checkout my pictures of the fun we had.

... My current research interests.

... Want to learn spanish?

... Smelting bismuth and levitating a magnet.

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