我无法在以下代码中对齐两个右箭头:
\begin{align*}
& F_{1}(\lambda): \\
& \begin{cases}
\Delta_{1} \geq 0 \\
F_{1}(1)>0 \\
F_{1}(-1)>0 \\
-2 < \lambda^{1}_{1,1}+\lambda^{1}_{1,2} < 2 \\
-1 < \lambda^{1}_{1,1}\lambda^{1}_{1,2} < 1
\end{cases}
& \implies
\begin{cases}
|g_{c}(a+b)+1+t(1-2\epsilon)| \geq 2\sqrt{\eta(1-2\epsilon)}\\
\epsilon < \frac{1}{2} \\
g_{c}(a+b) < 1+(\frac{\eta}{2}-t)(1-2\epsilon) \\
-1 < g_{c}(a+b)+t(1-2\epsilon) < 3 \\
-1 < g_{c}(a+b)-(\eta-t)(1-2\epsilon) < 1
\end{cases} \\
& F_{2}(\lambda): \\
& \begin{cases}
\Delta_{2} \geq 0 \\
F_{2}(1)>0 \\
F_{2}(-1)>0 \\
-2 < \lambda^{1}_{2,1}+\lambda^{1}_{2,2} < 2 \\
-1 < \lambda^{1}_{2,1}\lambda^{1}_{2,2} < 1
\end{cases}
& \implies
\begin{cases}
|g_{c}(a-b)+t+1| \geq 2\sqrt{\eta}\\
\eta > 0 \\
1-g_{c}(a-b)-t+\frac{\eta}{2} > 0 \\
-1 < g_{c}(a-b)+t < 3 \\
-1 < g_{c}(a-b)-\eta+t < 1
\end{cases}
\end{align*}
正确的箭头总是一个接一个地不对齐。
欢迎任何帮助!
答案1
您可以使用另一个 来指定对齐列的结束。在每行的第一个环境后&
添加,我们得到以下结果。&
cases
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align*}
& F_{1}(\lambda): \\
& \begin{cases}
\Delta_{1} \geq 0 \\
F_{1}(1)>0 \\
F_{1}(-1)>0 \\
-2 < \lambda^{1}_{1,1}+\lambda^{1}_{1,2} < 2 \\
-1 < \lambda^{1}_{1,1}\lambda^{1}_{1,2} < 1
\end{cases} &
& \implies
\begin{cases}
|g_{c}(a+b)+1+t(1-2\epsilon)| \geq 2\sqrt{\eta(1-2\epsilon)}\\
\epsilon < \frac{1}{2} \\
g_{c}(a+b) < 1+(\frac{\eta}{2}-t)(1-2\epsilon) \\
-1 < g_{c}(a+b)+t(1-2\epsilon) < 3 \\
-1 < g_{c}(a+b)-(\eta-t)(1-2\epsilon) < 1
\end{cases} \\
& F_{2}(\lambda): \\
& \begin{cases}
\Delta_{2} \geq 0 \\
F_{2}(1)>0 \\
F_{2}(-1)>0 \\
-2 < \lambda^{1}_{2,1}+\lambda^{1}_{2,2} < 2 \\
-1 < \lambda^{1}_{2,1}\lambda^{1}_{2,2} < 1
\end{cases} &
& \implies
\begin{cases}
|g_{c}(a-b)+t+1| \geq 2\sqrt{\eta}\\
\eta > 0 \\
1-g_{c}(a-b)-t+\frac{\eta}{2} > 0 \\
-1 < g_{c}(a-b)+t < 3 \\
-1 < g_{c}(a-b)-\eta+t < 1
\end{cases}
\end{align*}
\end{document}