L14_A
4.1 Continuity(cont.)
4.1 Continuity(cont.)
(1) Question:Open relative to A & open in M
L14_B
4.1 Continuity(cont.)
4.1 Continuity(cont.)
(1) Cor: open subset and closed subset
(2) Thm: compact subset of a metric space & subspace
(3) Remark:compactness,connectness,path-connectness
L14_C
4.1 Continuity(cont.)
4.1 Continuity(cont.)
(1) Definition
(2) Thm: mapping
L14_D
4.1 Continuity(cont.)
4.1 Continuity(cont.)
(1) projections in two metric spaces