Alternative Equation Formats

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MathML

\begin{array}{rcl} Q_{s} = T^{2} \sum_{l = 1}^{s} (T - l)^{- 1} t r {{\hat{ρ}}_{ϵ} (l) {\hat{ρ}}_{ϵ} (0)^{- 1} {\hat{ρ}}_{ϵ} (- l) {\hat{ρ}}_{ϵ} (0)^{- 1}} \end{array}

Math Rendered as SVG

Math as LaTeX Source

\begin{eqnarray*} Q_ s = T^2 \sum _{l=1}^ s (T-l)^{-1} \mr{tr} \{ \hat\rho _{\epsilon }(l)\hat\rho _{\epsilon }(0)^{-1} \hat\rho _{\epsilon }(-l)\hat\rho _{\epsilon }(0)^{-1} \} \end{eqnarray*}