弱函数（minorant）：如果一个函数f的函数值不超过另外一个与其对应的函数g，则函数f为弱函数。（英文：(mathematics) A function, all of whose values are not greater than the corresponding values of another function）
n. minorant
misc. inorant function
如果我们减弱函数的连续性要求，即降低函数空间的阶次，那么我们就得到一个“弱”解。
If we now release the continuity requirements on the function, i. e. lowering the order of the function space, we obtain a "weak" solution.
弱引用有两个构造函数：一个只取referent作为参数，另一个还取引用队列作为参数。
Weak references have two constructors: one takes only the referent as an argument and the other also takes a reference queue.
为了得到关于弱集值渐近鞅的收敛性质，首先证明了支撑函数列的极限亦为一支撑函数。
In order to get the convergence properties of the weak set-valued Amart, we firstly proved the theorem that the limit of support functions is a support function.
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