A little topology (I think) problem here: For A:= [0,1) ∪ ([2,3] ∩ ) ∪ {5} ⊂ R (real numbers) find the closure, boundary and interior of A I know the definitions but I don't know how to actually calculate them
Follow Math Help Forum on Facebook and Google+
To compute the closure, just notice that the closure of a finite union is the union of the closures. For the interior, can the points of be in it? And what about ?
Originally Posted by fylth For A:= [0,1) ∪ ([2,3] ∩ ) ∪ {5} ⊂ R (real numbers) find the closure, boundary and interior of A Do you know that
The boundary is the closure toss (set difference) the set... The interior is...
View Tag Cloud