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BP290 If any non-nosed faces exist, they are happy if and only if happy nosed faces exist as well vs. not so.
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CROSSREFS

Adjacent-numbered pages:
BP285 BP286 BP287 BP288 BP289  *  BP291 BP292 BP293 BP294 BP295

KEYWORD

convoluted

CONCEPT existence (info | search),
iff (info | search)

AUTHOR

"Lewis"

    page 1

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