Alternative Equation Formats

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MathML

{\hat{ρ}}_{τ} (X_{i}, X_{j}) = {(\begin{matrix} n \\ 2 \end{matrix})}^{- 1} \sum_{1 \leq t < s \leq n} s i g n ((x_{t, i} - x_{s, i}) (x_{t, j} - x_{s, j}))

Math Rendered as SVG

Math as LaTeX Source

\[ \hat{\rho }_{\tau }\left(X_{i},X_{j}\right) =\left(\begin{array}{c}n\\ 2\end{array}\right)^{-1} \sum _{1\leq t<s\leq n}\mr{sign} \left(\left(x_{t,i}-x_{s,i}\right)\left(x_{t,j}-x_{s,j}\right)\right) \]