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用法例句

The inverse problems for positive definite and semipositive definite matrices of equation AX=B on manifold;

流形上矩阵方程AX=B的正定及半正定阵的反问题

The new method of judgement for matrix positive definite in Euclid space;

Euclid空间中矩阵正定性判别的新方法

Some notes on the positive definite problem of a binary n- form;

关于一类二元n次型正定问题的若干注记