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BP905 Graph can be redrawn such that no edges intersect vs. not so.
(edit; present; nest [left/right]; search; history)
COMMENTS

A graph is a collection of vertices and edges. Vertices are the dots and edges are the lines that connect the dots. On the left, all edges can be redrawn (curved lines are allowed and moving vertices is allowed) such that no edges cross each other and each vertex is still connected to the same other vertices. These graphs are called planar.

CROSSREFS

Adjacent-numbered pages:
BP900 BP901 BP902 BP903 BP904  *  BP906 BP907 BP908 BP909 BP910

KEYWORD

nice, precise, allsorted, notso, math, left-null, preciseworld

CONCEPT graph (info | search),
topological_transformation (info | search)

WORLD

connected_graph [smaller | same | bigger]

AUTHOR

Molly C Klenzak

BP920 Is exact specific image (EX6205) vs. is not.
(edit; present; nest [left/right]; search; history)
COMMENTS

A spot-the-difference exercise.


Arguably invalid (solution not simple).

CROSSREFS

Adjacent-numbered pages:
BP915 BP916 BP917 BP918 BP919  *  BP921 BP922 BP923 BP924 BP925

KEYWORD

less, precise, convoluted, arbitrary, stretch, unstable, left-finite, left-full, perfect, pixelperfect, experimental, funny

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

WORLD

bmp [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP922 One row is rearranged to make the other by swapping an odd number of object pairs vs. one row is rearranged to make the other by swapping an even number of object pairs.
(edit; present; nest [left/right]; search; history)
COMMENTS

The mathematical terms for these operations are even and odd permutations.

CROSSREFS

Adjacent-numbered pages:
BP917 BP918 BP919 BP920 BP921  *  BP923 BP924 BP925 BP926 BP927

KEYWORD

precise, allsorted, math, left-narrow, right-narrow, unorderedpair, preciseworld, left-listable

CONCEPT even_odd (info | search),
permutation (info | search)

AUTHOR

Leo Crabbe

BP932 Every vertex is connected to every other vs. vertices are connected in a cycle (no other connections).
?
?
(edit; present; nest [left/right]; search; history)
COMMENTS

Complete graphs with zero, one, two, or three vertices would be ambiguously categorized (fit in overlap of both sides).


Left examples are called "fully connected graphs." Right examples are called "cycle graphs."

CROSSREFS

Adjacent-numbered pages:
BP927 BP928 BP929 BP930 BP931  *  BP933 BP934 BP935 BP936 BP937

KEYWORD

precise, left-narrow, right-narrow, both, preciseworld

CONCEPT graph (info | search),
distinguishing_crossing_curves (info | search),
all (info | search),
loop (info | search)

WORLD

connected_graph [smaller | same | bigger]

AUTHOR

Aaron David Fairbanks

BP935 Shapes have equal area vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP930 BP931 BP932 BP933 BP934  *  BP936 BP937 BP938 BP939 BP940

KEYWORD

nice, precise, allsorted, unstable, left-narrow, perfect, pixelperfect, unorderedpair

CONCEPT area (info | search)

WORLD

2_fill_shapes [smaller | same | bigger]

AUTHOR

Leo Crabbe

BP937 Shapes have equal perimeter vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP932 BP933 BP934 BP935 BP936  *  BP938 BP939 BP940 BP941 BP942

KEYWORD

precise, allsorted, unstable, left-narrow, perfect, unorderedpair

CONCEPT perimeter (info | search)

WORLD

2_fill_shapes [smaller | same | bigger]

AUTHOR

Leo Crabbe

BP941 JPEG image vs. PNG image.
(edit; present; nest [left/right]; search; history)
COMMENTS

Evidently this solution is stretching the idea of what makes images "different". Each corresponding pair of panels would be parsed as identical in any other case. It is worth noting that if you view this Problem on a template, the solution no longer applies at all.

CROSSREFS

Adjacent-numbered pages:
BP936 BP937 BP938 BP939 BP940  *  BP942 BP943 BP944 BP945 BP946

KEYWORD

less, precise, dual, antihuman, contributepairs, invalid, experimental, funny

AUTHOR

Leo Crabbe

BP942 Square bounding box vs. oblong rectangular bounding box.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP937 BP938 BP939 BP940 BP941  *  BP943 BP944 BP945 BP946 BP947

KEYWORD

precise, stretch, boundingbox, invalid, experimental, preciseworld

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

WORLD

rectangular_arrangement_of_white_pixels [smaller | same | bigger]
zoom in left (square_arrangement_of_white_pixels) | zoom in right (oblong_rectangular_arrangement_of_white_pixels)

AUTHOR

Leo Crabbe

BP945 Cube number of dots vs. non-cube number of dots.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP940 BP941 BP942 BP943 BP944  *  BP946 BP947 BP948 BP949 BP950

KEYWORD

precise, allsorted, number, left-null, help, preciseworld

CONCEPT cube (info | search)

WORLD

dots [smaller | same | bigger]

AUTHOR

Leo Crabbe

BP949 Two unique distances between points vs. three unique distances between points.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP944 BP945 BP946 BP947 BP948  *  BP950 BP951 BP952 BP953 BP954

KEYWORD

nice, precise, allsorted, stretch, perfect, traditional, preciseworld

CONCEPT two (info | search),
three (info | search)

WORLD

3_or_4_points [smaller | same | bigger]

AUTHOR

Leo Crabbe

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