- #1
Ed Quanta
- 297
- 0
Why is the inverse image of the open set {t|t<1/2},
{t|t>=1/2 or t<1/4}?
the t>+1/2 sort of makes sense to me, but can't seem to grasp how t<1/4 is an inverse image
{t|t>=1/2 or t<1/4}?
the t>+1/2 sort of makes sense to me, but can't seem to grasp how t<1/4 is an inverse image