More improvements to latex snippets

nvim/.config/nvim/UltiSnips/tex.snippets

@@ -1,6 +1,10 @@
 snippet article "WriteArticle"
 \documentclass{article}
 
+\usepackage{amsmath}
+\usepackage{amsfonts}
+\usepackage[a4paper, total={6in, 8in}]{geometry}
+
 \title{$1}
 \date{$2}
 \author{Nicholas Novak}
@@ -30,6 +34,18 @@ snippet sec "Section" b
 \section{$1}
 endsnippet
 
+snippet span "Linear Span" w
+\textrm{Span}\left\\{$1\right\\}
+endsnippet
+
+snippet left "Large Groupings" i
+\left$1\right$1
+endsnippet
+
+snippet lb "Large Brackets" wA
+\left\{$1\right\}
+endsnippet
+
 snippet mk "InlineMath" wA
 $${1}$`!p
 if t[2] and t[2][0] not in [',', '.', '?', '-', ' ']:
@@ -53,6 +69,6 @@ snippet corr "Correct"
 \textcolor{red}{$1}
 endsnippet
 
-snippet pm "Parenthesied matrix"
+snippet pm "Parenthesied matrix" i
 \begin{pmatrix}$1\end{pmatrix}
 endsnippet