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| Hi Daniel, I'm gald that my package can help you! ---------- As for your question, in this package, you can write the expresssion explicitly to calculate as following: &[Wolfram Notebook][1] Here I use Schwarzschild metric as an... |
| Maybe You type a wrong expression to calculate? ![enter image description here][1] It seems the only solution is x to infinity. [1]:... |
| Hi, Brad! This is how to do substitute with alternative H7 and H8. In fact, I think original pair of H7 and H8 is equivalent to the pair of alternative H7 and H8. There are some clues in the following notebook: &[Wolfram Notebook][1] [1]:... |
| &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/d669bb06-3fb6-442e-9ebd-84f9a6f238e1 |
| Vertex configuration (3,11,11) can grow forced to 1-super-tile, which is like a "seed". ![enter image description here][1] (The yellow tiles are new, unreflected and brown tiles are new, reflected.) And this vertex configuration shows up as... |
| &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/7b157089-44c6-45c1-9463-fb32e0634790 |
| Further discussion about vertex configurations: https://community.wolfram.com/groups/-/m/t/2967510 |
| That looks good! Thank you for your help. I'll try late on by myself! |
| Hi Roland, thank you. When I was programming a package for tensor calculations in General Relativity, I tried to find ways to input multi-superscripts with shortcut Ctrl + 6 to make more readable expressions. Finally I find another way to solve... |
| I didn't find any algorithm is able to find the normal subgroup corresponding to a quotient group. I think there is a obstacle, which is the normal subgroups and quotient groups do not correspond to each other one by one, i.e. the map is not... |