Braids in Higher Dimensions - Numberphile
Braids and the fourth dimension, with Dr Zsuzsanna Dancso. More links & stuff in full description below ↓↓↓ More videos with Dr Zsuzsanna Dancso: ...
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So let me first tell you what a braid is imagine that you have like two wooden planks and then there are some strings attached In a neat row to the first wooden plank, and then they are all tangled up But then when they arrive to the top they are again in a neat Straight line where they started so like one goes to one two goes to two. Yes So that's called a pure braid I'll only talk about pure braids today It doesn't hugely matter you can also consider ones that that crisscross and end up somewhere else But let me try to draw one that actually goes back to where it started from it goes from Bottom to the top in between you have some tangled mess So when you have some big tangled mess, what's your what's the first question that comes to mind? How would you untangle it? How ...
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So let me first tell you what a braid is imagine that you have like two wooden planks and then there are some strings attached In a neat row to the first wooden plank, and then they are all tangled up But then when they arrive to the top they are again in a neat Straight line where they started so like one goes to one two goes to two. Yes So that's called a pure braid I'll only talk about pure braids today It doesn't hugely matter you can also consider ones that that crisscross and end up somewhere else But let me try to draw one that actually goes back to where it started from it goes from Bottom to the top in between you have some tangled mess So when you have some big tangled mess, what's your what's the first question that comes to mind? How would you untangle it? How ...
