A limit with matrices
A limit with matrices
Let $A$ be an $n \times n$ invertible real matrix. Show that there is a complex matrix $B$ such that
$$\lim_{n \rightarrow +\infty} \sum_{k=0}^{n} \frac{B^k}{k!} = A$$
where $B^0$ is to be taken as $B^0 = \mathbb{I}_{n \times n}$ that is the identity $n \times n$ matrix.
$$\lim_{n \rightarrow +\infty} \sum_{k=0}^{n} \frac{B^k}{k!} = A$$
where $B^0$ is to be taken as $B^0 = \mathbb{I}_{n \times n}$ that is the identity $n \times n$ matrix.
$\displaystyle \sum_{n=1}^{\infty}\frac{1}{n^s}= \prod_{p \; \text{prime}}\frac{1}{1-p^{-s}}$
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