My Katex Macro

gistfile1.txt

$$ \boxed{@}

% Color % 
\newcommand\c[2]{\textcolor{#1}{#2}} 
\newcommand\r[1]{\textcolor{red}{#1}} 
\newcommand\g[1]{\textcolor{green}{#1}} 
\newcommand\b[1]{\textcolor{blue}{#1}} 
\newcommand\red[1]{\textcolor{red}{#1}} 
\newcommand\blue[1]{\textcolor{blue}{#1}} 
\newcommand\green[1]{\textcolor{green}{#1}} 
\newcommand\black[1]{\textcolor{black}{#1}} 
\newcommand\white[1]{\textcolor{white}{#1}} 
\newcommand\cyan[1]{\textcolor{cyan}{#1}} 
\newcommand\magenta[1]{\textcolor{magenta}{#1}} 
\newcommand\yellow[1]{\textcolor{yellow}{#1}} 
\newcommand\orange[1]{\textcolor{orange}{#1}} 
\newcommand\lime[1]{\textcolor{lime}{#1}} 
\newcommand\pink[1]{\textcolor{pink}{#1}} 
\newcommand\darkgray[1]{\textcolor{darkgray}{#1}} 
\newcommand\gray[1]{\textcolor{gray}{#1}} 
\newcommand\lightgray[1]{\textcolor{lightgray}{#1}} 
\newcommand\brown[1]{\textcolor{brown}{#1}} 
\newcommand\olive[1]{\textcolor{olive}{#1}} 
\newcommand\purple[1]{\textcolor{purple}{#1}} 
\newcommand\teal[1]{\textcolor{teal}{#1}} 
\newcommand\violet[1]{\textcolor{violet}{#1}} 
\newcommand\hotpink[1]{\textcolor{hotpink}{#1}} 
\newcommand\blueviolet[1]{\textcolor{blueviolet}{#1}} 
\newcommand\navyblue[1]{\textcolor{navyblue}{#1}} 
\newcommand\peach[1]{\textcolor{Peach}{#1}} 
\newcommand\orangeRed[1]{\textcolor{OrangeRed}{#1}} 
\newcommand\salmon[1]{\textcolor{Salmon}{#1}} 
\newcommand\skyblue[1]{\textcolor{SkyBlue}{#1}} 
\newcommand\springreen[1]{\textcolor{SpringGreen}{#1}} 
\newcommand\aqua[1]{\textcolor{aqua}{#1}} 
\newcommand\navy[1]{\textcolor{navy}{#1}} 
\newcommand\silver[1]{\textcolor{silver}{#1}} 
\newcommand\fuchsia[1]{\textcolor{fuchsia}{#1}} 
\newcommand\maroon[1]{\textcolor{maroon}{#1}} 
\definecolor{luo}{RGB}{102,204,255}
\definecolor{miku}{RGB}{57,197,187} 
\newcommand\luo[1]{\textcolor{luo}{#1}} 
\newcommand\miku[1]{\textcolor{miku}{#1}}

% Typography % 
\newcommand\a[1]{\begin{aligned}#1\end{aligned}} 
\newcommand\t[1]{\text{#1}} 
\newcommand\lb[1]{\left{\begin{aligned} #1 \end{aligned}\right.} 
\newcommand\rb[1]{\left.\begin{aligned} #1 \end{aligned}\right}} 
\newcommand\env[2]{\begin{#1}#2\end{#1}}

% Misc % 
\newcommand\s[1]{{#1}} 
\newcommand\qed{\quad\square} 
\newcommand\define{\dot{=}} 
\newcommand\then{\implies} 
\newcommand\rounddown[1]{\lfloor{#1}\rfloor} 
\newcommand\roundup[1]{\lceil{#1}\rceil} 
\newcommand\graph[4]{#1 = (#2, #3) \quad |#2| = #4} 
\newcommand\G{G = (V, E) \quad |V| = n} 
\newcommand\so{\therefore} 
\newcommand\comment[1]{\quad\text{(#1)}} 
\newcommand\note[1]{\quad\text{(#1)}} 
\newcommand\bt[1]{\boxed{\text{#1}}} 
\newcommand\max[1]{\textbf{ max } {#1} } 
\newcommand\min[1]{\textbf{ min } {#1} } 
\newcommand\IF{\textbf{ IF }} 
\newcommand\if{\textbf{ if }} 
\newcommand\IS{\textbf{ IS }} 
\newcommand\is{\textbf{ is }} 
\newcommand\but{\textbf{ but }} 
\newcommand\however{\textbf{ however }} 
\newcommand\AND{\textbf{ AND }} 
\newcommand\OR{\textbf{ OR }} 
\newcommand\NOT{\textbf{ NOT }} 
\newcommand\THEN{\textbf{ THEN }} 
\newcommand\IN{\textbf{ IN }} 
\newcommand\NOTIN{\textbf{ NOT-IN }} 
\newcommand\assume{\textbf{ Assuming that: }} 
\newcommand\contradictory{\textbf{ Thus lead to contradiction }} 
\newcommand\proof{\textbf{Proof: }} 
\newcommand\st{\text{ such that }} 
\newcommand\hold{\text{ holds }} 
\newcommand\lhs{\text{ LHS }} 
\newcommand\rhs{\text{ RHS }} 
\newcommand\wlg{\text{ Without loss of generality }} 
\newcommand\nb{\text{ nota bene }} 
\newcommand\analogously{\text{ analogously }} 
\newcommand\viceversa{\textbf{ viceversa }} 
\newcommand\let{\textbf{ let }} 
\newcommand\as{\textbf{ as }} 
\newcommand\for{\textbf{ As for }} 
\newcommand\select{\textbf{ SELECT }} 
\newcommand\m[1]{\mathit{#1}} 
\newcommand+[1]{\mathcal{#1}} 
\newcommand\warnning[1]{\colorbox{Blue}{\textcolor{Yellow}{#1}}} 
\newcommand\error[1]{\colorbox{Black}{\textcolor{White}{#1}}} $$