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BP81 Dark figures can be divided from outline figures by a straight line vs. convex hulls of filled and outlined figures overlap.
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REFERENCE

M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 240.

CROSSREFS

Adjacent-numbered pages:
BP76 BP77 BP78 BP79 BP80  *  BP82 BP83 BP84 BP85 BP86

KEYWORD

finished, traditional, bongard

CONCEPT convex_hull (info | search),
separable_entangled (info | search),
sides_of_line (info | search),
feature_cluster (info | search),
cluster_of_one (info | search),
cluster (info | search),
imagined_line_or_curve (info | search),
imagined_entity (info | search),
objects_overlap (info | search),
overlap (info | search)

AUTHOR

Mikhail M. Bongard

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