direct sum of permutations造句
例句與造句
- A one-node tree represents the trivial permutation, a tree whose root node is positive represents the direct sum of permutations given by its two child subtrees, and a tree whose root node is negative represents the skew sum of the permutations given by its two child subtrees.
- Given a permutation " & omega; ", define its " reverse " rev ( " & omega; " ) to be the permutation whose entries appear in the opposite order of those of " & omega; " when written in one-line notation; for example, the reverse of 25143 is 34152 . ( As permutation matrices, this operation is reflection across a horizontal axis . ) Then the skew and direct sums of permutations are related by
- It's difficult to find direct sum of permutations in a sentence. 用direct sum of permutations造句挺難的