Here is a part of code in which a footnote can not be displayed.
\documentclass[12pt]{article}%
\usepackage{graphicx}
\usepackage{hyperref}%
\begin{document}
Consequently, the three laws of equality\footnote{It seems that Huntington was
the first to formalize the three laws of equality.} can also be deduced.
\begin{enumerate}
\item
\begin{tabular}
[t]{p{1.25in}l}%
\textbf{Multiplication.} & $a\cdot b,=,a-\left( 1-b\right)$ \footnote{We can omit $\cdot$ and $a\cdot b,=,ab$.}
\end{tabular}
\end{enumerate}
\end{document}
The first footnote works fine. The second footnote is nowhere to be seen despite the referent mark being displayed. I wonder what is the problem.
tabularenvironment can be a little tricky. Have you seen this thread? https://tex.stackexchange.com/questions/109467/footnote-in-tabular-environment – Ingmar Oct 21 '21 at 17:50