P. P. Tammela, “On the theory of the reduction of positive quadratic forms. Abnormality of the partition of the positivity cone into the Minkowski $(n\geqslant7)$ and Barns–Cohn reduction regions $(n=4)$.”, Zap. Nauchn. Sem. LOMI, 1986, Volume 151,Pages 125

On the theory of the reduction of positive quadratic forms. Abnormality of the partition of the positivity cone into the Minkowski $(n\geqslant7)$ and Barns–Cohn reduction regions $(n=4)$.

P. P. Tammela

UDC: 511.9+511.512