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当且仅当 [dāng qiě jǐn dāng]

网络释义专业释义

短语

当且仅当 if and only if ; SF XOR OF ; iff ; tc-dtp

若且唯若当且仅当 if and only if

当且仅当、若且唯若 iff

  • if and only if - 引用次数:97

    It is proved that a graph G is a bipartite graph if and only if every odd-order princpal minor of the adjacecy matrix A (G) of G is singular.

    本文证明了:图G是二部图当且仅其邻接矩阵A(G)的任一个奇阶主子阵是奇异阵。

    参考来源 - 二部图的邻接矩阵的特征
  • iff

·2,447,543篇论文数据,部分数据来源于NoteExpress

新汉英大辞典

当且仅当 [dāng qiě jǐn dāng]

  • {计} if and only if; when and only when; iff
  • 短语:
    • 当且仅当操作 if and only if operation;
    • 当且仅当运算 if and only if operation
以上来源于:《新汉英大辞典》

双语例句原声例句

  • 重复科学证据证明蝾螈之有效时,蝾螈之眼才会进入小黑袋中

    Eye of newt goes into the little black bag, if and only if there is reproducible scientific evidence that it works.

    youdao

  • 这些行为发生时,上级下级之间存在一种权威关系

    When, and only when, these behaviors occur, does an authority relationship exist between the superior and subordinate.

    youdao

  • 正确因为面对 a b偶性的推导是一个命题。

    This is true as the above derivation for a and b of opposite parity is an if and only if statement.

    youdao

更多双语例句
  • A very important result is that if two vectors are equal, if A = B, the only way it can happen is if separately Ax is equal to Bx and Ay is equal to By.

    这里有一个相重要的结论,如果两个矢量相等,例如 A = B,那么当且仅,Ax = Bx 和 Ay = By 分别成立

    耶鲁公开课 - 基础物理课程节选

  • I'll say it again, Player i's strategy "s'i" is weakly dominated by her strategy "si" if she always does at least as well by choosing "si" than choosing "s'i" regardless of what everyone else does, and sometimes she does strictly better.

    重申一下,参与者i的策略s'i,弱劣于策略si,当且仅无论对手怎么做,她选择si的收益至少与选s'i的相等,有些情况下甚至是严格占优的

    耶鲁公开课 - 博弈论课程节选

百科

当且仅当

当且仅当(英文:If and only if, 或者:iff),或称若且唯若,在数学、哲学、逻辑学以及其他一些技术性领域中被用来表示“在,并且仅仅在这些条件成立的时候”的缩写,在英语中的对应标记为iff。

详细内容

以上来源于: 百度百科
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