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math.RA2013
More Examples of Non-Rational Adjoint Groups
Nivedita Bhaskhar
We give a recursive construction to produce examples of quadratic forms q_n in the n-th power of the fundamental ideal in the Witt ring whose corresponding adjoint groups PSO(q_n)…
math.NT2013
Hasse Principle for G-quadratic forms
Eva Bayer-Fluckiger, Nivedita Bhaskhar, Raman Parimala
Let k be a global field of characteristic not 2. The classical Hasse-Minkowski theorem states that if two quadratic forms become isomorphic over all the completions of k, then they…