# Tag Info

Funny that Witt is not mentioned here. Indeed, his papers Theorie der quadratischen Formen in beliebigen Körpern (introducing Witt cancellation, Witt decomposition, the Hasse-Witt invariant, the Witt ring and in a little sidestep proving that every quadratic form in $\ge 5$ variables over a $\mathfrak{p}$-adic field is isotropic) and Zyklische Körper und ...