User Portlet User Portlet

Ed Pegg
Discussions
![Mathematical Games: unit-distance graphs][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Main21082025.png&userId=20103 [2]:...
![Mathematical Games: covering sets][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Main24072025.png&userId=20103 [2]:...
![Mathematical Games 30: Measuring the Universe][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Main26062025.png&userId=20103 [2]:...
![A new Klein graph embedding][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Main27052025.png&userId=20103 [2]: https://www.wolframcloud.com/obj/1c2515a8-bd0a-4843-888c-c787141092b3
&[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/b0419916-2347-444a-9727-dd62dbe340a5
![Mathematical Games: polygons and polynomials][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=2496Main22052025.png&userId=20103 [2]:...
![Polygons, polynomials and the Fricke-Macbeath graph][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Main21052025.png&userId=20103 [2]:...
You may have heard there's a new Pope, who happens to have a degree in math. Did you know an earlier Pope, Sylvester II (Gerbert of Aurillac) was one of the major shapers of math? He wrote five influential math books. Let's start with the [Codex...
{"NoncayleyTransitive",{28,13}} didn't have a known nice embedding. As a Local Graph, it was $C_9$, so I figured I could wrangle it. And I was right! Graph[GraphData[{"NoncayleyTransitive",{28,13}}],...
![Mathematical Games: famous equations][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=4302Main24042025.png&userId=20103 [2]:...