Skip to main content\(\newcommand{\avec}{{\boldsymbol a}}
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\)
Appendix A Notation
| Symbol |
Description |
Location |
| \(\real^m \) |
\(m\)-dimensional vector space |
Item 1 |
| \(\len{\xvec}\) |
the (Euclidean) norm of a vector |
Definition 1.1.11 |
| \(I_n\) |
\(n\)-dimensional idenity matrix |
Item d |
| \(A^\top\) |
transpose of matrix \(A\)
|
Paragraph |
| \(\evec_j\) |
Colunn \(j\) of an identity matrix. This column vector has a 1 in row \(j\) and 0s everywhere else. |
Paragraph |
| \(h \circ g\) |
The coposition of functions \(g\) and \(h\text{.}\) \((h \circ g)(x) = h(g(x))\text{.}\)
|
Paragraph |
| \(\langle a, b, c\rangle\) |
horizontal vector notation, equivalent to \(\threevec {a}{b}{c}\)
|
Assemblage |
| \(\proj{\yvec}{\vvec}\) |
the projection of \(\yvec\) in the direction of \(\vvec\)
|
Paragraph |
| \(\vvec \perp \wvec\) |
the vectors \(\vvec\) and \(\wvec\) are orthogonal |
Definition 6.1.10 |
| \(R^2\) |
the coefficient of determination |
Definition 6.5.11 |
| \(X_{i \cdot}\) |
The \(i\)th row of a matrix \(X\)
|
Paragraph |
| \(X_{\cdot j}\) |
The \(j\)th column of a matrix \(X\)
|
Paragraph |
