Alternative Equation Formats

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MathML

\begin{aligned} e_{1} (λ) & = \sum_{j = 0}^{p} 1_{[β_{j} \neq 0]} \\ {GCV}_{1} (λ) & = \frac{l (\hat{β})}{n [1 - e_{1} (λ) / n]^{2}} \end{aligned}

Math Rendered as SVG

Math as LaTeX Source

\begin{align*} e_1 (\lambda ) & = \sum _{j=0}^ p \mathbf{1}_{[\beta _ j \ne 0]}\\ \text {GCV}_1(\lambda )& = \frac{l(\hat{\beta })}{n[1-e_1(\lambda )/n]^2} \end{align*}