A second countable space is a topological space whose topology is second countable.
Second Countable Space
See also
Second Countable Topology, Topological SpaceThis entry contributed by Edward Welbourne (author's link)
Explore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W., with contributions by Edward Welbourne. "Second Countable Space." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/SecondCountableSpace.html