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→What does this have to do with Penrose Steps?
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[https://en.wikipedia.org/wiki/Cohomology Cohomologhy] | [https://en.wikipedia.org/wiki/Cohomology Cohomologhy] | ||
=== What does this have to do with Penrose | === What does this have to do with Penrose Stairs? === | ||
* [https://en.wikipedia.org/wiki/Penrose_stairs Penrose stairs] | * [https://en.wikipedia.org/wiki/Penrose_stairs Penrose stairs] | ||
* [https://en.wikipedia.org/wiki/Spinor Spinor] | * [https://en.wikipedia.org/wiki/Spinor Spinor] | ||