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math.RA2020
Splitting of quaternions and octonions over purely inseparable extensions in characteristic 2
Detlev W. Hoffmann
We give examples of quaternion and octonion division algebras over a field of characteristic that split over a purely inseparable extension of of degree bu…
math.RA2010
Dimensions of anisotropic indefinite quadratic forms II --- The lost proofs
Detlev W. Hoffmann
Let F be a field of characteristic different from 2. The u-invariant and the Hasse number of a field F are classical and important field invariants pertaining to quadratic forms. T…