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BP851 Figure with points (small white circles) can be smoothly deformed within the 2D plane without passing through itself so that all points touch to make the other figure vs. not so (movement out of the plane required).
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CROSSREFS

All examples here fit left in BP369, a version where the figure is allowed to pass through itself while being deformed.

Adjacent-numbered pages:
BP846 BP847 BP848 BP849 BP850  *  BP852 BP853 BP854 BP855 BP856

KEYWORD

math, traditional

CONCEPT topological_transformation (info | search)

WORLD

figure_made_of_curves_and_quotient_by_hollow_dots [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

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