Theorem
A spacecontaininga connected dense subspace is connected.
Proof
Letbea connected dense subspace of
sothat
Ifisa connected subset of
and
then
isconnected.
Sinceisdense in
andsince
isconnected, so is
Theorem
A spacecontaininga connected dense subspace is connected.
Proof
Letbea connected dense subspace of
sothat
Ifisa connected subset of
and
then
isconnected.
Sinceisdense in
andsince
isconnected, so is