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3 votes
1 answer
1k views

Convert NURBS curve into Cubic Bezier Curve

From this: Maybe you already know this, but it's impossible to convert nurbs to bezier splines exactly because nurbs are rational functions, and bezier splines are polynomials. I don't understand ...
Lance's user avatar
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3 votes
2 answers
713 views

What is the "continuity" as a term in computable analysis?

Background I once implemented a datatype representing arbitrary real numbers in Haskell. It labels every real numbers by having a Cauchy sequence converging to it. That will let $\mathbb{R}$ be in the ...
Dannyu NDos's user avatar
1 vote
1 answer
580 views

What's an example of a planar graph with two embeddings whose geometric duals are nonisomorphic?

How to prove that the dual of the dual of a connected planar graph $G$ is isomorphic to $G$? In the post linked above, the user "plop" gives a great response where they claim, in particular, ...
Sam Winnick's user avatar