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BP803 Image of Bongard Problem such that rotating by a half-turn leaves the solution invariant versus not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP798 BP799 BP800 BP801 BP802  *  BP804 BP805 BP806 BP807 BP808

KEYWORD

nice, meta (see left/right), miniproblems, creativeexamples, presentationmatters, assumesfamiliarity, structure

WORLD

boxes_bpimage_three_per_side [smaller | same | bigger]
zoom in left (half_turn_invariant_bp_image_3_per_side)

AUTHOR

Aaron David Fairbanks

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