• 作为数论一个分支次型理论有着悠久历史

    As a branch of number theory, the theory of binary quadratic forms has a long history.

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  • 重油催化裂化装置生产重组分为原料,采用脱沥青精制工艺,可制备二元族烃橡胶增塑剂

    The dual-group hydrocarbon type rubber plasticizer was prepared using the heavy components in the production of heavy oil catalytic cracking by secondary deasphalting process.

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  • 本文利用二次型理论给出二次函数充分条件求法 ,定义了二元齐次多项式的正定性 ,并基于定义给出了二元函数极值的一个充分条件。

    This paper is mainly devoted to provide a supplementary analysis of extreme value problem of bivariate functions, in which a new sufficient condition and its concise proof when critical case is given.

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  • 本文利用二次型理论给出二次函数充分条件求法 ,定义了二元齐次多项式的正定性 ,并基于定义给出了二元函数极值的一个充分条件。

    This paper is mainly devoted to provide a supplementary analysis of extreme value problem of bivariate functions, in which a new sufficient condition and its concise proof when critical case is given.

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