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Search: keyword:creativeexamples
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BP200 Bongard Problem with solution based on features vs. Bongard Problem with solution based on number.
(edit; present; nest [left/right]; search; history)
COMMENTS

Every example is an image of a Bongard Problem, without bounding boxes around examples, with three examples on either side.

CROSSREFS

BP575 is similar.

Adjacent-numbered pages:
BP195 BP196 BP197 BP198 BP199  *  BP201 BP202 BP203 BP204 BP205

KEYWORD

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

CONCEPT bongard_problem (info | search),
bp_solution (info | search)

WORLD

no_box_bpimage_three_drawings_per_side [smaller | same | bigger]

AUTHOR

Harry E. Foundalis

BP335 Tessellates the plane vs. does not tessellate the plane.
(edit; present; nest [left/right]; search; history)
COMMENTS

EX7152 is an example of a shape than can be stretched in such a way that it no longer tessellates the plane. This is a property that is only exhibited by shapes that tessellate with rotated copies of themselves. - Leo Crabbe, Mar 05 2021

CROSSREFS

Adjacent-numbered pages:
BP330 BP331 BP332 BP333 BP334  *  BP336 BP337 BP338 BP339 BP340

KEYWORD

nice, stretch, unstable, math, hardsort, creativeexamples, proofsrequired, perfect, pixelperfect, traditional

CONCEPT infinite_plane (info | search),
tessellation (info | search),
tiling (info | search)

WORLD

shape [smaller | same | bigger]
zoom in left (fill_shape)

AUTHOR

Aaron David Fairbanks

BP344 Shape can tile itself vs. shape cannot tile itself.
(edit; present; nest [left/right]; search; history)
COMMENTS

Left examples are sometimes called "rep-tiles."


The tiles all must be the same size. More specifically, all left examples can tile themselves only using scaled down and rotated versions of themselves with all tiles the same size. Right examples cannot tile themselves using scaled down rotated versions of themselves or even reflected versions of themselves with all tiles the same size.


Without the puzzle piece-like shape EX4120 on the right side the current examples also allow the solution "shape can tile with itself so as to create a parallelogram vs. shape cannot tile with itself so as to create a parallelogram."

CROSSREFS

See BP532 for a version with fractals.

Adjacent-numbered pages:
BP339 BP340 BP341 BP342 BP343  *  BP345 BP346 BP347 BP348 BP349

EXAMPLE

Go to https://oebp.org/files/yet.png for an illustration of how some left-sorted shapes tile themselves.

KEYWORD

hard, nice, precise, notso, unstable, math, hardsort, creativeexamples, proofsrequired, perfect, traditional

CONCEPT recursion (info | search),
self-reference (info | search),
tiling (info | search),
imagined_shape (info | search),
imagined_entity (info | search)

WORLD

shape [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP346 Object on the right fits in pattern on the left vs. object on the right does not fit in pattern on the left.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP341 BP342 BP343 BP344 BP345  *  BP347 BP348 BP349 BP350 BP351

KEYWORD

nice, creativeexamples, structure, traditional, rules

CONCEPT categorization (info | search)

AUTHOR

Aaron David Fairbanks

BP350 Some quantity keeps increasing from left to right vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP345 BP346 BP347 BP348 BP349  *  BP351 BP352 BP353 BP354 BP355

KEYWORD

creativeexamples, structure, traditional, rules

CONCEPT size_increase_decrease (info | search),
iteration (info | search),
tracing_line_or_curve (info | search)

WORLD

quantity_vary_seq_noise_allowed [smaller | same | bigger]
zoom in left (quantity_change_seq_increase_right_noise_allowed)

AUTHOR

Aaron David Fairbanks

BP351 Discrete quantity vs. continuous quantity.
(edit; present; nest [left/right]; search; history)
CROSSREFS

See BP873 for the version with Bongard Problems.

Adjacent-numbered pages:
BP346 BP347 BP348 BP349 BP350  *  BP352 BP353 BP354 BP355 BP356

KEYWORD

creativeexamples, structure, traditional, rules

CONCEPT size_increase_decrease (info | search),
discrete_continuous (info | search),
iteration (info | search),
tracing_line_or_curve (info | search)

WORLD

constant_change_seq_increase_right [smaller | same | bigger]
zoom in left (constant_change_discrete_seq_increase_right)

AUTHOR

Aaron David Fairbanks

BP352 Increasing quantity has no lower (or upper) bound (and gives a representation of negative numbers) vs. increasing quantity has lower (and/or upper) bound.
(edit; present; nest [left/right]; search; history)
COMMENTS

All left examples have a clear "zero" value, but it may be unclear which side is meant to be positive and which side is meant to be negative (See BP893left for quantities without clear notion of increase/decrease.)

CROSSREFS

See BP353left for looping quantities; these do not clearly represent positive and negative numbers, but they can likewise unboundedly decrease and increase.

Adjacent-numbered pages:
BP347 BP348 BP349 BP350 BP351  *  BP353 BP354 BP355 BP356 BP357

KEYWORD

creativeexamples, structure, traditional, rules

CONCEPT size_increase_decrease (info | search),
iteration (info | search),
tracing_line_or_curve (info | search)

WORLD

constant_change_seq_increase_right [smaller | same | bigger]
zoom in right (constant_change_seq_increase_right_lower_bound)

AUTHOR

Aaron David Fairbanks

BP353 Increasing quantity loops back to starting value vs. increasing quantity cannot loop back to starting value.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP348 BP349 BP350 BP351 BP352  *  BP354 BP355 BP356 BP357 BP358

KEYWORD

creativeexamples, structure, traditional, rules, miniworlds

CONCEPT iteration (info | search),
loop (info | search),
tracing_line_or_curve (info | search)

WORLD

constant_change_seq_increase_right [smaller | same | bigger]
zoom in left (constant_change_seq_loop_right)

AUTHOR

Aaron David Fairbanks

BP354 Increasing quantity is angular vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP349 BP350 BP351 BP352 BP353  *  BP355 BP356 BP357 BP358 BP359

KEYWORD

creativeexamples, structure, traditional, rules, miniworlds

CONCEPT angle (info | search),
loop (info | search),
tracing_line_or_curve (info | search)

WORLD

constant_change_seq_increase_right [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP355 Fractal iteration based on 2-D (shapes) vs. fractal iteration based on 1-D (line segments).
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP350 BP351 BP352 BP353 BP354  *  BP356 BP357 BP358 BP359 BP360

KEYWORD

creativeexamples, structure, traditional, rules

CONCEPT fractal (info | search),
iteration (info | search),
tracing_line_or_curve (info | search)

WORLD

constant_change_seq_fractal_iterate_right [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

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