/sci/ - Science & Math

>>12085302
>>12085312
So then, if A is a set containing the set X = {{}}, and assuming that {} is a subset of A and X,
{} is a member and subset of X, and a subset but not a member of A.

X is a member of A, and {X} is a subset of A, X is a subset of itself, but X is not a subset of either {X} or A?

If I did not misunderstand,

Then how in the fuck does the ∀x(x∈Ax⊆A) definition of transitivity work? (This is the definition provided to me in my introductory text)
How could it exist?
I'm so fucking stupid, anons.

Tell me everything I need to know about the 2004 starquake.
Is it true that it would have wiped out any life on the other side of the galaxy? Could magnetars be the reason we dont see aylamos