Not Knot (Parts 1 and 2)
Not Knot is a good thinking trigger.
I enjoyed topology when I studied it and I still remember trying to imagine multi-dimensional spaces and then having to draw them on a highly inadequate 2 dimensional piece of paper.
According to the Not Knot blurb on YouTube:
Not Knot is a guided tour into computer-animated hyperbolic space. It proceeds from the world of knots to their complementary spaces — what’s not a knot. Profound theorems of recent mathematics show that most known complements carry the structure of hyperbolic geometry, a geometry in which the sum of three angles of a triangle always is less than 180 degrees.
Here’s Part 1:
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Now for Part 2:
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As a matter of fact, I didn’t notice it…but then again, I have never heard of Lobachevskian geometry. Absolutely fascinating videos, though! I am going to have to ponder this and then watch them again.