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BP1016 Rigid vs. not rigid.
(edit; present; nest [left/right]; search; history)
REFERENCE

Henneberg, L. (1911), Die graphische Statik der starren Systeme, Leipzig

Jackson, Bill. (2007). Notes on the Rigidity of Graphs.

Laman, Gerard. (1970), "On graphs and the rigidity of plane skeletal structures", J. Engineering Mathematics, 4 (4): 331–340.

Pollaczek‐Geiringer, Hilda (1927), "Über die Gliederung ebener Fachwerke", Zeitschrift für Angewandte Mathematik und Mechanik, 7 (1): 58–72.

CROSSREFS

Adjacent-numbered pages:
BP1011 BP1012 BP1013 BP1014 BP1015  *  BP1017 BP1018 BP1019 BP1020 BP1021

KEYWORD

nice, physics, help

CONCEPT rigidity (info | search),
graph (info | search),
imagined_motion (info | search)

WORLD

planar_connected_graph [smaller | same | bigger]
zoom in left (rigid_planar_connected_graph)

AUTHOR

Aaron David Fairbanks

BP1089 Equal number of black and white pixels vs. not
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1084 BP1085 BP1086 BP1087 BP1088  *  BP1090 BP1091 BP1092 BP1093 BP1094

KEYWORD

nice, precise, allsorted, boundingbox, right-null, perfect, pixelperfect, help, preciseworld, bordercontent, blackwhiteinvariant

WORLD

[smaller | same | bigger]

AUTHOR

Jago Collins

BP1102 Nodes share the same edge connections as the vertices of a cube vs. not so.
(edit; present; nest [left/right]; search; history)
REFERENCE

https://mathworld.wolfram.com/CubicalGraph.html

CROSSREFS

Adjacent-numbered pages:
BP1097 BP1098 BP1099 BP1100 BP1101  *  BP1103 BP1104 BP1105 BP1106 BP1107

KEYWORD

precise, allsorted, arbitrary, help, preciseworld

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

WORLD

connected_graph [smaller | same | bigger]

AUTHOR

Leo Crabbe

BP1161 Image contains the exact arrangement of pixels that form the "S" creature depicted in EX9532 vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1156 BP1157 BP1158 BP1159 BP1160  *  BP1162 BP1163 BP1164 BP1165 BP1166

KEYWORD

unwordable, notso, arbitrary, handed, leftright, updown, stretch, blackwhite, creativeexamples, right-null, perfect, pixelperfect, help

AUTHOR

Leo Crabbe

BP1168 Image contains the exact arrangement of pixels that form the "S" creature depicted in EX9532 in exactly one place vs. arrangement is present in multiple places.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1163 BP1164 BP1165 BP1166 BP1167  *  BP1169 BP1170 BP1171 BP1172 BP1173

EXAMPLE

This Problem was made to serve as an example of something BP1166 would sort on its left.

KEYWORD

precise, arbitrary, example, pixelperfect, help, neither, preciseworld

AUTHOR

Leo Crabbe

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