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| &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/66cd4e59-a575-4239-a069-b1a0a0141616 |
| &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/157e132e-644c-4afa-aed2-5e4fa5c195d8 |
| ![Mathematical Games: knots and crossing numbers][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=knotsandcrossingnumbers.png&userId=20103 [2]:... |
| ![Happy Pythagorean Day 3^2 + 4^2 = 5^2][1] 9/16/25 $3^2 / 4^2 / 5^2$ $3^2 + 4^2 = 5^2$ Today's date is a [Pythagorean triple][2], a very rare event. We have many [Pythagorean Demonstrations][3]. Below is a standard image ...... |
| ![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]:... |