# Vector Component

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## References

### 2012

• (Golub & Van Loan, 2012) ⇒ Gene H. Golub, and Charles F. Van Loan. (2012). “Matrix Computations (4th Ed.)." Johns Hopkins University Press. ISBN:1421408597
• QUOTE: Let $\R^n$ denote the vector space of real n-vectors: :$x \in \mathbb{R}^n \Leftrightarrow \ \ x = \begin{bmatrix} x_{1} \\ \vdots \\ x_n \end{bmatrix} \ \ x_i \in \R.$ We refer to $x_i$ as the ith component of $x$. Depending upon context, the alternative notations $[x]_i$ and $x(i)$ are sometimes used.