| ▲ | How to prove equations using diagrams, part 1(epatters.org) |
| 30 points by frostbyte7 6 hours ago | 3 comments |
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| ▲ | henearkr 2 hours ago | parent [-] |
| Very interesting!! A nitpick, for a J-shaped diagram D, J is the "index category" or the "scheme" of D, not the "shape" like written in the article. |
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| ▲ | epatters an hour ago | parent | next [-] | | Thanks! Yes, there are lots of different names for the domain of a diagram, but "shape" is a common enough one. You can find it in standard sources, including the nLab [1] and some textbooks. [1] <https://ncatlab.org/nlab/show/diagram> | |
| ▲ | JadeNB 2 hours ago | parent | prev [-] | | The article does mention "index[ing] category." I think terminology here is not especially universal: I am a mathematician but not a category theorist, and I have seen "shape" but not "scheme." |
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