Latex error: No line here to end

出现这个错误的原因是使用了双斜杠 “\” ，因为“\”是一个换行命令，如果在使用的时候并不是在一个段落中，那么就会出现error。
解决的办法就是强制中断当前的环境，从新开始一段，然后再用 “\”：

\begin{corollary}
	% \textbf{General sequential composition}
	Let $A_1, A_2, ..., A_k$ be $k$ algorithms (that take auxiliary inputs) that satisfy $\varepsilon_1$-DP, $\varepsilon_2$-DP, ..., $\varepsilon_k$-DP, respectively, with respect to the input dataset. Publishing
	\[t = <t_1,t_2, ..., t_k>, where \ t_1 = A_1(D), t_2 = A_2(t_1, D), ..., t_k = A_k(<t_1, ..., t_{(k-1)}>, D)\]
	satisfies $(\sum\nolimits_{i=1}^{k}\varepsilon_i)$-DP.
\end{corollary}
\leavevmode \\
\begin{proposition}
	\textbf{Parallel Composition Under Unbounded DP.} Let $A_1, A_2, ..., A_k$ be $k$ algorithms that satisfy $\varepsilon_1$-DP, $\varepsilon_2$-DP, ..., $\varepsilon_k$-DP, respectively. Given a deterministic partitioning function $f$, let $D_1, D_2, ..., D_k$ be the resulting partitions of executing $f$ on $D$. Publishing $A_1(D_1), A_2(D_2), ..., A_k(D_k)$ satisfies $(\max_{i \in [1,...,k]}\varepsilon_i)$-DP.
\end{proposition}
\leavevmode \\
$\left[1\right]$ Ninghui Li; Min Lyu; Dong Su; Weining Yang, ``Differential Privacy: From Theory to Practice," in Differential Privacy: From Theory to Practice, Morgan $\&$ Claypool, 2016.

参考：https://blog.csdn.net/G_Barble/article/details/106184870