Hilbert’s 17th Problem 6: History math.NT Add comments Oct 202017 既然奇次多项式会变号, 那么设 \(d\) 次多项式 \(p\in \Bbb R[x_1, x_2,\dotsc, x_n]\) 非负, 则 \(d\) 为偶数. 我们以后只要关注偶次多项式就行了. Leave a Reply Cancel reply Your Comment Name (required) E-mail (required) URI Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.