/sci/ - Science & Math

Is the set of all n x n matrices countable?

My method:
1)Take every natural number as a string and parse the first two digits from the rest
2)this defines the size of the matrix and the rest is the information that fills in the matrix
3)the set is iterated upon and the matrices that dont define a valid matrix are thrown out and shifted down

is there a better way to put N and the set of all matrices in one to one correspondence?

is graph theory considered brainlet? I want to research and discover new math and this field is so comfy to me.

What is the most fruitful math to explore in terms of research?

When did /sci/ become a broken man?

Is geology a meme?

Other one is at bump limit.

Can someone explain how to draw vectors out of a compound(?) vector??
Not english but you get the point.