User Portlet
Featured Contributor
| Discussions |
|---|
| I finally found a way using the British mapping system to get a decent image. Attached. And our paper on the coloring of maps where single-point adjacency counts as adjacency has just been accepted by Utilitas Mathematica. |
| This Community post is a Wolfram Language version of the Raku-Jupyter notebook of the presentation: - ["Number theory neat examples in Raku (Set 1)"](https://www.youtube.com/watch?v=wXXWyRAAPvc) [![enter image description... |
| ![enter image description here][2] -- you have earned ***Featured Contributor Badge*** ![enter image description here][1] Your exceptional post has been selected for our editorial columns ***Staff Picks*** http://wolfr.am/StaffPicks and... |
| Many years ago I (and Tom Sibley) proved that any tiling (finite or infinite) with Penrose rhombs is 3-colorable as a map (a question raised by John Conway). And later the same was proved for Kites and Darts. So I wonder if the same is true for hats.... |
| My solution to problem 2 from a few years ago: https://youtu.be/IIswLyTbuVM |
| Congratulations! Your post was highlighted on the Wolfram's official social media channels. Thank you for your contribution. We are looking forward to your future posts. - [Twitter][1] - [Facebook][2] - [LinkedIn][3] [1]:... |
| Thanks..... stan |
| **WHUPS! Obsolete even as I posted it...** Also 18: dat = FoldList[PolyhedronFaceReflect, a4, {3, 1, 5, 2, 1, 2, 5, 2, 3, 5, 1, 3, 2, 1, 2, 3, 2}]; Graphics3D[{dat, Red, dat[[1]]}, Boxed -> False] ![enter image... |
| Very nice. Of course you know that triangles fail in the classic case because the vertex crashes into the road. Your Reuleaux method seems to not have that problem. One would have to zoom in closely to make sure the vertex happily slides into the... |
| New record. 148 tetrahedra in a loop such that the gap at the end has error 7 . 10^-14. So instead of the diameter of a proton, we (Mike Elgersman and I) are now down to the radius of a proton. Our previous record was 174 tetrahedra with a gap of... |