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In the first part of this work Du, a quantitative supplement to the Hasse principle was given for the count of the number of automorphic orbits of primitive zeros of a genus of ternary quadratic forms. This sequel contains, for certain special forms, an independent and elementary proof of this result. When combined with other results of Du, this proof also leads to a refinement of an asymptotic result of Du and some corollaries for these special forms.
William Duke (Sun,) studied this question.
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