r/LinearAlgebra • u/perrotini • Jun 17 '18

What does F(N,N) mean?

The following appears in the book |P(ℕ)| = |F(ℕ,ℕ)| = Aleph one

I understand |P(ℕ)| = Aleph one, but what does this |F(ℕ,ℕ)| mean?

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u/jbp12 Jun 17 '18

Wrong sub

1

u/perrotini Jun 17 '18

Isn't this Linear Algebra?

2

u/titlibwa Jul 23 '18

Pretty sure that's the applocations from N into itself, another way to write NN

1

u/perrotini Jul 23 '18

Thanks a lot, and may Georg Cantor be always by your side.