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BP121 Objects below match their "symbols" above, according to one "code" versus objects below match their "symbols" above, according to another "code."
(edit; present; nest [left/right]; search; history)
COMMENTS

Circle: VV; square: VΛ; triangle: ΛΛ ; blank: ΛV vs. circle: ΛΛ; square: ΛV; triangle: VV; blank: VΛ.

CROSSREFS

Adjacent-numbered pages:
BP116 BP117 BP118 BP119 BP120  *  BP122 BP123 BP124 BP125 BP126

KEYWORD

arbitrary, consistentsymbols, traditional

CONCEPT absence_as_presence (info | search),
correspondence (info | search),
sides_of_line (info | search),
triangle (info | search)

AUTHOR

Douglas R. Hofstadter

BP122 Line divides interior into two regions vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP117 BP118 BP119 BP120 BP121  *  BP123 BP124 BP125 BP126 BP127

KEYWORD

traditional

CONCEPT separated_regions (info | search),
interior_exterior (info | search),
number (info | search),
tiling (info | search)

AUTHOR

Douglas R. Hofstadter

BP123 Similar shapes vs. dissimilar shapes.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP118 BP119 BP120 BP121 BP122  *  BP124 BP125 BP126 BP127 BP128

KEYWORD

noisy, traditional

CONCEPT similar_shape (info | search),
similar (info | search)

AUTHOR

Douglas R. Hofstadter

BP124 Similar textures vs. dissimilar textures.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP119 BP120 BP121 BP122 BP123  *  BP125 BP126 BP127 BP128 BP129

KEYWORD

traditional

CONCEPT same_feature (info | search),
same (info | search)

AUTHOR

Douglas R. Hofstadter

BP125 One protrusion and one indentation of the same shape vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP120 BP121 BP122 BP123 BP124  *  BP126 BP127 BP128 BP129 BP130

KEYWORD

traditional

CONCEPT indentation (info | search),
protrusion (info | search),
same_shape (info | search),
same (info | search)

AUTHOR

Douglas R. Hofstadter

BP126 One large and one small object vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP121 BP122 BP123 BP124 BP125  *  BP127 BP128 BP129 BP130 BP131

KEYWORD

traditional

CONCEPT number (info | search),
separation_of_joined_objects (info | search),
size (info | search)

AUTHOR

Douglas R. Hofstadter

BP127 Exactly one circle vs. not exactly one circle.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP122 BP123 BP124 BP125 BP126  *  BP128 BP129 BP130 BP131 BP132

KEYWORD

noisy, notso, traditional

CONCEPT exists_one (info | search),
number (info | search)

AUTHOR

Douglas R. Hofstadter

BP128 Same objects inside and outside the large shape vs. not same objects inside and outside the large shape.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP123 BP124 BP125 BP126 BP127  *  BP129 BP130 BP131 BP132 BP133

KEYWORD

noisy, traditional

CONCEPT inside (info | search),
interior_exterior (info | search),
outlined_filled (info | search),
shape_cluster (info | search),
cluster (info | search),
same_number (info | search),
same (info | search),
texture (info | search)

AUTHOR

Douglas R. Hofstadter

BP129 Indentation on protrusion vs. indentation on indentation.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP124 BP125 BP126 BP127 BP128  *  BP130 BP131 BP132 BP133 BP134

KEYWORD

traditional

CONCEPT indentation (info | search),
protrusion (info | search)

AUTHOR

Douglas R. Hofstadter

BP130 Closed region is made of curves if flaws are ignored vs. closed region is a polygon if flaws are ignored.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP125 BP126 BP127 BP128 BP129  *  BP131 BP132 BP133 BP134 BP135

KEYWORD

noisy, traditional

CONCEPT curved_straight (info | search),
imperfection_small (info | search)

AUTHOR

Douglas R. Hofstadter

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