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BP529 Fractal tiles itself with smaller non-rotated (nor reflected) copies of itself vs. fractal requires turning to tile itself.
(edit; present; nest [left/right]; search; history)
COMMENTS

No included examples involve reflection.

CROSSREFS

Adjacent-numbered pages:
BP524 BP525 BP526 BP527 BP528  *  BP530 BP531 BP532 BP533 BP534

KEYWORD

perfect, infinitedetail

CONCEPT fractal (info | search),
rotation_required (info | search),
self-reference (info | search),
tiling (info | search)

WORLD

fractal_self_tile [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP530 Fractal tiles itself with uniformly scaled-down copies of itself vs. fractal tiles itself with stretched copies of itself.
(edit; present; nest [left/right]; search; history)
COMMENTS

"Self-similar" vs. "self-affine."

CROSSREFS

Adjacent-numbered pages:
BP525 BP526 BP527 BP528 BP529  *  BP531 BP532 BP533 BP534 BP535

KEYWORD

perfect, infinitedetail

CONCEPT fractal (info | search),
self-reference (info | search),
tiling (info | search)

WORLD

fractal_self_tile_affine_allowed [smaller | same | bigger]
zoom in left (fractal_self_tile)

AUTHOR

Aaron David Fairbanks

BP531 Fractal is tiled by three smaller copies of itself vs. fractal is tiled by five smaller copies of itself.
(edit; present; nest [left/right]; search; history)
COMMENTS

More specifically, all left examples shown in this Problem have Hausdorff dimension log2(3) while all right examples have Hausdorff dimension log3(5).


Left examples can tile themselves by any power of 3 smaller same-sized copies of themselves while right examples can tile themselves by any power of 5 smaller same-sized copies of themselves.


Homage to Bongard's original three versus five Problems.

CROSSREFS

Adjacent-numbered pages:
BP526 BP527 BP528 BP529 BP530  *  BP532 BP533 BP534 BP535 BP536

KEYWORD

perfect, infinitedetail

CONCEPT fractal (info | search),
recursion (info | search),
self-reference (info | search),
tiling (info | search),
three (info | search),
five (info | search)

WORLD

fractal_self_tile [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP533 Contains smaller copy of itself vs. doesn't.
(edit; present; nest [left/right]; search; history)
COMMENTS

A smaller copy of EX6409 (the black area) can be located within itself, but some of the white space inside it is not retained in this smaller copy.

CROSSREFS

Adjacent-numbered pages:
BP528 BP529 BP530 BP531 BP532  *  BP534 BP535 BP536 BP537 BP538

KEYWORD

nice, perfect, infinitedetail, contributepairs

CONCEPT fractal (info | search),
recursion (info | search),
self-reference (info | search)

WORLD

connected_built_from_self_tile_fractals [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP854 Nothing vs. nothing.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP849 BP850 BP851 BP852 BP853  *  BP855 BP856 BP857 BP858 BP859

KEYWORD

left-finite, right-finite, left-full, right-full, finished, experimental, funny

WORLD

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

AUTHOR

Aaron David Fairbanks

BP1107 Contains smaller copy of self with black and white inverted vs. not so.
(edit; present; nest [left/right]; search; history)
COMMENTS

There are various problematic cases left out. Are black and white to be inverted within a fractal's convex hull or its outermost outline?

Must this outline be preserved around the smaller inverted version of the fractal, or is it allowed to bleed into other white areas?

No examples have been included in this Bongard Problem whose placement depends on these questions.

CROSSREFS

Adjacent-numbered pages:
BP1102 BP1103 BP1104 BP1105 BP1106  *  BP1108 BP1109 BP1110 BP1111 BP1112

KEYWORD

perfect, infinitedetail

CONCEPT black_white_inversion (info | search),
fractal (info | search),
recursion (info | search),
self-reference (info | search)

WORLD

fractal [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP1108 Solid chunk of black space in neighborhood of any point of the fractal vs. solid chunk of white space in any neighborhood.
?
?
?
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1103 BP1104 BP1105 BP1106 BP1107  *  BP1109 BP1110 BP1111 BP1112 BP1113

KEYWORD

right-null, perfect, infinitedetail, assumesfamiliarity, both, neither

CONCEPT topological_density (info | search),
fractal (info | search),
recursion (info | search),
self-reference (info | search)

WORLD

fractal [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP1116 Contains self somewhere within any area around any point within self vs. not so.
(edit; present; nest [left/right]; search; history)
COMMENTS

Very similar to the less clearly-defined solution "tiles itself with infinitely many copies (different sizes allowed) vs. does not".


The left hand side of this is a weaker condition than the left hand side of BP1241.

CROSSREFS

Adjacent-numbered pages:
BP1111 BP1112 BP1113 BP1114 BP1115  *  BP1117 BP1118 BP1119 BP1120 BP1121

KEYWORD

notso, perfect, infinitedetail

CONCEPT topological_density (info | search),
fractal (info | search),
recursion (info | search),
self-reference (info | search)

WORLD

connected_fractal [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP1118 Self-similar only scaled about one point vs. multiple centers of self-similarity.
(edit; present; nest [left/right]; search; history)
COMMENTS

There is only ever one such center of self-similarity or infinitely many.

CROSSREFS

Adjacent-numbered pages:
BP1113 BP1114 BP1115 BP1116 BP1117  *  BP1119 BP1120 BP1121 BP1122 BP1123

KEYWORD

nice, perfect, infinitedetail

CONCEPT fractal (info | search),
recursion (info | search),
self-reference (info | search)

WORLD

[smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

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