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Displaying 1-3 of 3 results found.     page 1
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BP842 Any permutation of positions that sends one string of symbols to another sends each string of symbols to some other versus not so.
(edit; present; nest [left/right]; search; history)
COMMENTS

Restriction of BP841 to permutations.

CROSSREFS

Adjacent-numbered pages:
BP837 BP838 BP839 BP840 BP841  *  BP843 BP844 BP845 BP846 BP847

KEYWORD

hard, contributepairs, traditional

CONCEPT permutation (info | search)

WORLD

zoom in left | zoom in right

AUTHOR

Aaron David Fairbanks

BP904 Rows show all possible ways a certain number of dots can be divided between a certain number of bins vs. not so.
(edit; present; nest [left/right]; search; history)
COMMENTS

The rows in the panels on the right hand side show all the ways you can divide a certain number of dots between a certain number of bins, ignoring which bins they are placed in.

CROSSREFS

Adjacent-numbered pages:
BP899 BP900 BP901 BP902 BP903  *  BP905 BP906 BP907 BP908 BP909

KEYWORD

solved, left-null, grid, left-listable, right-listable

CONCEPT permutation (info | search)

AUTHOR

Molly C Klenzak

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

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