computational topology counterexamples with 3d visualization of bézier curves
;J. Li;T.J. Peters;D. Marsh;K.E. Jordan
Health and quality of life outcomes2012Vol. 13pp. 115-134
146
li2012appliedcomputational
Abstract
For applications in computing, Bézier curves are pervasive and are defined by a piecewise linear curve L which is embedded in R3 and yields a smooth polynomial curve C embedded in R3. It is of interest to understand when L and C have the same embeddings. One class ofc ounterexamples is shown for L being unknotted, while C is knotted. Another class of counterexamples is created where L is equilateral and simple, while C is self-intersecting. These counterexamples were discovered using curve visualizing software and numerical algorithms that produce general procedures to create more examples.