满射(onto) 和 单射(one-to-one)

满射 A mapping \(T: \mathbb{R}^{n} \rightarrow \mathbb{R}^{m}\) is said to be onto \(\mathbb{R}^{m}\) if each \(\mathbf{b}\) in \(\mathbb{R}^{m}\) is th
posted on 2021-04-24 11:22  A2he  阅读(1683)  评论(0)  编辑  收藏  举报