我想使用 align 或命令在 itemize 环境下对每个方程进行编号。但是效果不太好。提前感谢您的耐心等待。错误：Runaway 参数？with\quad U(c_t,l_t)&=\theta \ln c_t+(1-\theta )\ln (1-l_t), 0<\theta \ETC. ! 段落在 \align 完成之前结束。 \par 但我不知道如何更正它。我的代码如下：
\section{Economic Environment}
\begin{itemize}
\item{Consumption of a representative agent at period-t:}$c_t$.
\item{Labor of a representative agent at period-t:}$l_t$.
\item{The expected value of lifetime utility:}
\qquad$\biggl[\sum_{t=0}^{\infty}\beta^t U(c_t,l_t)\biggr]$
\begin{align}
with\quad U(c_t,l_t)&=\theta\ln c_t+(1-\theta)\ln (1-l_t), 0<\theta<1.\\
\item {Final output:}y
\item {Capital of equipment and Structure:}k&=k_e+k_s.\\
\item {Utilization rate of equipment:}h.
\item {Total factor productivity(TFP):}z.
\item{Production technology:}
\qquad y&=F(h k_e,k_s,l,z)\\
&=z(h k_e)^{\alpha_e} k_s^{\alpha_s} l^{(1-\alpha_e-\alpha_s)}, \quad
0<\alpha_e,\alpha_s,\alpha_e+\alpha_s<1 \\
\item{Investment in equipment and structures:}
\qquad i&=i_e+i_s \\
\item{Adjustment costs that can be used for consumption, c,investment in
structures and equipment:}
\qquad a&=a_e+a_s\\
\qquad a_e&=A_e(k_e'/q,k_e/q;\eta)\\
&=e^{\eta}\phi_e{(k_e'/q-\kappa_e k_e/q)}^2/(k_e/q) \quad with
\phi_e,\kappa_e>0,\\
\intertext{and}a_s&=A_s(k_s',k_s)\\
&=\phi_s{(k_s'-\kappa_s k_s)}^2/k_s.
\item{Resource constraints:}
\qquad y&=a+c+i_e+i_s
\item{The stock of structures accumulation equation:}
\qquad k_s'&=(1-\delta_s)k_s+i_s, where 0<\delta<1.\\
\item $q$: The current state of the technology for producing equipment.
\item{The equipment accumulation equation:}
\qquad k_e'&=(1-\delta_e(h))k_e+i_eq\\
\item{Equipment depreciation function:}
\qquad \delta_e(h)&=\frac{b}{\omega}h^\omega, \omega>1.\\
\item{Process of TFP:}
\qquad z_{t+1}&=\gamma_z^{t+1}e^{\zeta_{t+1}},\\
\qquad where $\zeta_{t+1}$ follows the distribution
function Z(\zeta'|\zeta)&=Pr\{\zeta_{t+1}=\zeta'|\zeta_t=\zeta\}.\\
\item{Process of investment specific technology:}
\qquad q_{t+1}&=\gamma_q^{t+1}e^\eta_{t+1},\\
\qquad where $\eta_{t+1}$ follows the distribution
function $H(\eta'|\eta)=Pr\{\eta_{t+1}=\eta'|\eta_t=\eta\}.$
\end{align}
\end{itemize}
太感谢了！
答案1
您的问题确实难以理解，代码片段不完整，发布的图片似乎显示了不相关的文字。
然而，这运行时没有错误，但结果却很难理解：它形成了项目符号和编号方程的奇怪混合，但希望您可以对其进行编辑以使其可用。
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{itemize}
\item $c_t$: Consumption of a representative agent at period-$t$.
\item $l_t$: Labor of a representative agent at period-$t$.
\begin{equation}
E\biggl[\sum_{t=0}^{\infty}\beta^t U(c_t,l_t)\biggr]
\end{equation}
with
\begin{equation}
U(c_t,l_t)=\theta\ln c_t+(1-\theta)\ln (1-l_t), 0<\theta<1.
\end{equation}
\item $y$: Final Output.
\item $k=k_e+k_s$: Capital equipment and Structure.
\item $h$: Utilization rate of equipment.
\item $z$: Total Factor Productivity.
\begin{equation}
y=F(h k_e,k_s,l,z)=z(h k_e)^{\alpha_e} k_s^{\alpha_s} l^{(1-\alpha_e-
\alpha_s)}, \quad 0<\alpha_e,\alpha_s,\alpha_e+\alpha_s<1
\end{equation}
Production Technology.
\item $i=i_e+i_s$: Investment in equipment and structures.
\item $a=a_e+a_s$: Adjustment costs that can be used for
consumption,c,investment in structures and equipment.
$y=a+c+i_e+i_s$: Resource Constraints.\\
$k_s'=(1-\delta_s)k_s+i_s$, where $0<\delta<1$: The stock of structures
accumulation equation.
\item $q$: The current state of the technology for producing equipment.
$k_e'=(1-\delta_e(h))k_e+i_eq$:The equipment accumulation equation.
\begin{equation}
\delta_e(h)=\frac{b}{\omega}h^\omega, \omega>1
\end{equation}
Equipment depreciation
function.
\begin{equation}
z_{t+1}=\gamma_z^{t+1}e^{\zeta_{t+1}}.
\end{equation}
\end{itemize}
\end{document}