here is a minimum example:
Code: Select all
Code, edit and compile here:
\documentclass[12pt]{article}\usepackage[english]{babel}\usepackage[utf8x]{inputenc}\usepackage{amsmath}\begin{document}\begin{gather*}\begin{array}{c}\dfrac{a}{b}\\\dfrac{c}{d}\end{array}\end{gather*}\end{document}
\arraystretch is not a global solution because:
Code: Select all
Code, edit and compile here:
\documentclass[12pt]{article}\usepackage[english]{babel}\usepackage[utf8x]{inputenc}\usepackage{amsmath}\renewcommand*{\arraystretch}{6.0}\begin{document}\begin{gather*}\begin{array}{rl}\begin{array}{c}\dfrac{a}{b \cdot \dfrac{a}{b \cdot \dfrac{a}{b \cdot \dfrac{a}{b}}}}\\\dfrac{a \cdot \dfrac{a \cdot \dfrac{a \cdot \dfrac{a}{b}}{b}}{b}}{b}\\\dfrac{c}{d}\\a = b\end{array}&\begin{array}{rl}a & $this is an a$\\b & $this in a b$\\c & $this is a c$\\d & $this is a d$\end{array}\end{array}\end{gather*}\end{document}