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Search: concept:existence
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BP833 Image of a Bongard Problem with (left) solution property that can have multiplicity vs. not so.
(edit; present; nest [left/right]; search; history)
COMMENTS

All examples are "object present vs. object absent" Problems.

CROSSREFS

Adjacent-numbered pages:
BP828 BP829 BP830 BP831 BP832  *  BP834 BP835 BP836 BP837 BP838

KEYWORD

abstract, meta (see left/right), miniproblems, creativeexamples, assumesfamiliarity, structure, presentationinvariant

CONCEPT existence (info | search),
number (info | search),
one (info | search)

WORLD

[smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP1056 Blank image vs. nothing.
(edit; present; nest [left/right]; search; history)
COMMENTS

Two kinds of "nothing".

CROSSREFS

See also BP1219, "blank image vs. image of blank square".

Adjacent-numbered pages:
BP1051 BP1052 BP1053 BP1054 BP1055  *  BP1057 BP1058 BP1059 BP1060 BP1061

KEYWORD

left-finite, right-finite, left-full, right-full, left-null, finished, invalid, experimental, funny, finishedexamples

CONCEPT empty (info | search),
existence (info | search),
zero (info | search)

WORLD

blank_image [smaller | same | bigger]
zoom in left (blank_image) | zoom in right (nothing)

AUTHOR

Aaron David Fairbanks

BP1209 Empty square present vs. no square present.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Nearly identical to BP1221, which is the same except non-empty squares are allowed.

See BP24 for "circle present vs. not".

Adjacent-numbered pages:
BP1204 BP1205 BP1206 BP1207 BP1208  *  BP1210 BP1211 BP1212 BP1213 BP1214

KEYWORD

stub, left-narrow, traditional

CONCEPT empty (info | search),
existence (info | search),
square (info | search)

AUTHOR

Aaron David Fairbanks

BP1221 Square present vs. no square present.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Nearly identical to BP1209, which is the same except the square is always empty (and the right side still has no squares, empty or not).

Adjacent-numbered pages:
BP1216 BP1217 BP1218 BP1219 BP1220  *  BP1222 BP1223 BP1224 BP1225 BP1226

KEYWORD

stub

CONCEPT existence (info | search),
square (info | search)

AUTHOR

Aaron David Fairbanks

BP1224 Grey shape present vs. not.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1219 BP1220 BP1221 BP1222 BP1223  *  BP1225 BP1226 BP1227 BP1228 BP1229

KEYWORD

stub, notso, dithering

CONCEPT existence (info | search),
texture (info | search)

AUTHOR

Aaron David Fairbanks

BP1232 Curves with at least one crossing vs. curves do not cross.
(edit; present; nest [left/right]; search; history)
COMMENTS

Based on BP30, "curve with exactly one self-crossing vs. curve without a self-crossing". This is just a slightly more general version.

CROSSREFS

Adjacent-numbered pages:
BP1227 BP1228 BP1229 BP1230 BP1231  *  BP1233 BP1234 BP1235 BP1236 BP1237

EXAMPLE

EX6881

KEYWORD

stub, notso, traditional

CONCEPT x-crossing (info | search),
existence (info | search)

WORLD

crosscurves [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP1238 Fractal with hole vs. fractal with no hole (simply connected).
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1233 BP1234 BP1235 BP1236 BP1237  *  BP1239 BP1240 BP1241 BP1242 BP1243

KEYWORD

notso, perfect, infinitedetail

CONCEPT existence (info | search),
fractal (info | search),
hole (info | search),
loop (info | search)

WORLD

connected_fractal_self_tile [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

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