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单词
even permutation
释义
WordReference Random House Unabridged Dictionary of American English © 2024
e
′
ven permuta
′
tion,
[
Math.
]
Mathematics
a permutation of a set of
n
elements,
x
1
,
x
2
, …
x
n
, that leaves unchanged the product of all differences of the form (
x
i
— x
j
), where
i
is less than
j.
Cf.
odd permutation.
1930–35
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shorthaired
short hairs
shorthand
short-handed
short-handedness
shorthand typist
short haul
short-haul
short head
shorthead
shortheaded
shorthorn
short-horned grasshopper
shortie
shorties
short interest
short iron
shortish
short-laid
shortleaf pine
short line
short list
short-list
short-lived
short-livedness
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更新时间:2025/12/22 0:02:59