All examples here fit left in BP809, a version where the figures are allowed to pass through themselves while being deformed.
Adjacent-numbered pages: BP805 BP806 BP807 BP808 BP809  *  BP811 BP812 BP813 BP814 BP815
nice, math, unorderedpair, traditional
two_homeomorphic_figures_made_of_curves [smaller | same | bigger]
Aaron David Fairbanks
Adjacent-numbered pages: BP849 BP850 BP851 BP852 BP853  *  BP855 BP856 BP857 BP858 BP859
left-finite, right-finite, left-full, right-full, finished, experimental, funny
nothing [same | bigger]zoom in left (nothing) | zoom in right (nothing)