Topological Properties of Real Normed Space
Kazuhisa Nakasho, Yuichi Futa, Yasunari Shidama (2014)
Formalized Mathematics
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In this article, we formalize topological properties of real normed spaces. In the first part, open and closed, density, separability and sequence and its convergence are discussed. Then we argue properties of real normed subspace. Then we discuss linear functions between real normed speces. Several kinds of subspaces induced by linear functions such as kernel, image and inverse image are considered here. The fact that Lipschitz continuity operators preserve convergence of sequences...