3 papers
math.NT2017
On a Waring's problem for integral quadratic and hermitian forms
Constantin N. Beli, Wai Kiu Chan, Maria Ines Icaza +1
For each positive integer , let be the smallest integer such that if an integral quadratic form in variables can be written as a sum of squares of integra…
math.GR2015
Examples of algebraic groups of type G2 having the same maximal tori
Constantin Beli, Philippe Gille, Ting-Yu Lee
Answering a question of A. Rapinchuk, we construct examples of non- isomorphic semisimple algebraic groups H1 and H2 of type G2 with coherently equivalent systems of maximal k-tori…
math.NT2009
A new approach to classification of integral quadratic forms over dyadic local fields
Constantin-Nicolae Beli
We translate O'Meara's classification Theorem 93:28 in terms of BONGs. BONGs, short for "basis of norm generators", are a new way of describing quadratic lattices, an alternative t…