Search: +meta:BP1143
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| BP1 |
| Empty image vs. non-empty image. |
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COMMENTS
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The first Bongard Problem.
All examples in this Bongard Problem are line drawings (one or more connected figures made up of curved and non-curved lines). |
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REFERENCE
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M. M. Bongard, Pattern Recognition, Spartan Books, 1970, p. 214. |
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CROSSREFS
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Adjacent-numbered pages:
* BP2 BP3 BP4 BP5 BP6
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EXAMPLE
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A circle fits on the right because it is not nothing. |
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KEYWORD
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easy, nice, precise, allsorted, unstable, world, left-narrow, left-finite, left-full, left-null, perfect, pixelperfect, finished, traditional, stableworld, deformstable, bongard
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CONCEPT
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empty (info | search),
existence (info | search),
zero (info | search)
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WORLD
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zoom in left (blank_image) | zoom in right (curves_drawing)
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AUTHOR
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Mikhail M. Bongard
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| BP335 |
| Tessellates the plane vs. does not tessellate the plane. |
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COMMENTS
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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 |
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CROSSREFS
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Adjacent-numbered pages:
BP330 BP331 BP332 BP333 BP334 * BP336 BP337 BP338 BP339 BP340
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KEYWORD
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nice, stretch, unstable, math, hardsort, creativeexamples, proofsrequired, perfect, pixelperfect, traditional
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CONCEPT
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infinite_plane (info | search),
tessellation (info | search),
tiling (info | search)
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WORLD
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shape [smaller | same | bigger]
zoom in left (fill_shape)
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AUTHOR
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Aaron David Fairbanks
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