Input:
Some formula: {ltx: $\sum_{i=n}^{n} x_{i}$}
or simply: $\lambda_1 v_1 + \lambda_2 v_2 + ... + \lambda_n v_n$.
Output:
Some formula: 
or simply: 
.
Input:
#Inlatex <<---
$det A = \sum\limits_{\pi \in S_n} sgn(\pi) a_{\pi(1)1} ... a_{\pi(n)n}$
---
Output:
