< A User's Guide to Serre's Arithmetic
Local Properties
Definition and First Properties
For a fixed (local) field the Hilbert symbol of two is defined as
If we replace by , then
showing that if we multiply, by squares, then their Hilbert symbols does not change. Hence the Hilbert symbol factors as
Serre goes on to prove that this is in fact a bilinear form over in the next subsection.
After the definition he gives a method for computing the Hilbert Symbol in the proposition: It states that there is a short exact sequence
where and
- sends
He then goes on to prove/state some identities useful for computation:
- is proven in the theorem
Computation of
Global Properties
Product Formula
Existence of Rational Numbers with given Hilbert Symbols
References
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