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单词
odd permutation
释义
WordReference Random House Unabridged Dictionary of American English © 2024
odd
′
permuta
′
tion,
[
Math.
]
Mathematics
a permutation of a set of
n
elements,
x
1
,
x
2
, …,
x
n
, which permutes the product of all differences of the form (
x
i
–
x
j
), where
i
is less than
j,
into the negative of the product. Cf.
even permutation.
1925–30
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更新时间:2026/8/12 16:04:28