本文导出了概括平差模型中各种自协因数阵的秩，讨论了Q_z的秩对分组平差的影响。
This paper derives the rank of various autocofaetor matrices in the generalized adjustment model , and discusses the effects of rank (Qx) on indirect grouped adjustment.
在第5节，我们用偏序集拟阵的余秩函数来研究偏序集拟阵与其对偶之间的关系。
In Section 5, we use the corank function of poset matroids to investigate the relationship between a poset matroid and its dual.
以秩强映射或强映射为态射的拟阵范畴中的范畴同构都是拟阵同构。
It is shown that the categorical isomorphisms in the category of matroids with either rank strong maps or strong maps as morphisms are isomorphisms in matroids sense.
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