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In its youth up to the age of seventy or eighty years, none of its companions forms so strictly tapered a cone from top to bottom.
在它七十岁或八十岁之前的年轻时期， 它的同伴中没有一个从上到下形成如此严格的锥形。
In linear algebra, the Frobenius companion matrix of the monic polynomial
is the square matrix defined as
With this convention, and on the basis v1, ... , vn, one has
(for i < n), and v1 generates V as a K[C]-module: C cycles basis vectors.
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