- #1
pivoxa15
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- 1
Homework Statement
X={a,b}
Let U be a topology on X then
let U1={empty set, {a}, X}
U2={empty set, {b}, X}
why isn't U1 and U2 metrizable?
However {empty set, {a}, {b}, X} and {empty set, X} is metrizable.
The Attempt at a Solution
Can't see why.