8) Sums of squares Flashcards
1
Q
What is Σm
A
2
Q
If a,b∈Σ2, what can you say about ab
A
3
Q
What is Fermat’s two-square theorem
A
4
Q
When is an integer n a sum of two squares
A
5
Q
If a,b∈Σ4, what can you say about ab
A
6
Q
What is Lagrange’s four-square theorem
A
Every non-negative integer is a sum of four squares
