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| ![Mathematical Games: Fractals Part 2 - applications, complex sets, and substitution rules][1] &[Wolfram Notebook][2] [1]:... |
| ![Mathematical Games: Fractals Part 1 - applications, complex sets, and substitution rules][1] &[Wolfram Notebook][2] [1]:... |
| ![The Kochawave curve and other fractals][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=TheKochawaveCurveandOtherFractals.png&userId=20103 [2]:... |
| ![Mathematical Games: number seven across maths - graphs, geometry, designs, knots, and units][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=MGSeven.png&userId=20103 [2]:... |
| As noted in the Wikipedia article, you don't need to pick antipodes. You can drill a straight tunnel between any two arbitrary points and the time needed will be the same. See "Straight path between two arbitrary points". |
| &[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]:... |
| Don't forget the "boring" binary counter. |
| Code for the top image. ... |