I also need multiple alignment(horizontal) levels.
### Attempt 01: Michelle Krummel's Lists tutorial
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Code, edit and compile here:
\begin{enumerate}\item\begin{align}\frac{d}{dx}[f(x)]\end{align}\item\begin{align}\frac{d}{dx}[g(x)]\end{align}\item\begin{itemize}\item\begin{align}\frac{d}{dx}[h(x)]\end{align}\item\begin{itemize}\item\begin{itemize}\item\begin{align}\frac{d}{dx}[A(x)]\end{align}\item\begin{align}\frac{d}{dx}[H(x)]\end{align}\end{itemize}\end{itemize}\end{itemize}\end{enumerate}
This way does produce an effect very close to what I want to do, except for the list numbering, bulleting, "dash", and "star" on the left hand side, Please see graphic below (towards bottom) within "CURRENT RESULTS" link under "Attempt 01: Lists".
This is a result of `\begin{enumerate}` and `\end{enumerate}`, but without it the `\item` trick just doesn't work.
However, I find having to write the following clauses for each successive indentation a tad bit onerous:
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Code, edit and compile here:
\begin{enumerate}\item\begin{itemize}...\end{itemize}\end{enumerate}
The next two attempts I use: http://tex.stackexchange.com/questions/ ... nvironment
On this page there are two solutions: 2) Steven B. Segletes and 3) David Carlisle
### Attempt 02: Segletes
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Code, edit and compile here:
\documentclass[12pt,a4paper]{article}\usepackage[fleqn]{amsmath}\usepackage[utf8]{inputenc}\usepackage{mathtools}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{makeidx}\usepackage{parskip}\usepackage{graphicx}\usepackage{lmodern}\usepackage{verbatim}\usepackage[usestackEOL]{stackengine}\usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry}\author{Andrew}\stackMath\begin{document}Proove Theorem AAC\begin{align}\mbox{Let y } & = \Longunderstack[l] {f(x) \\g(x)} \\x & = \Longunderstack[l] {h(x) \\%w & = \Longunderstack[l] {% A(x) \\% }}\end{align}\end{document}
This works well for two levels of alignment, but notice how above I had to comment out the third level of alignment. You can't use the `\Longunderstack[l]` within another `\Longunderstack`, thus only two levels of alignment.
### Attempt 03: David Carlisle
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Code, edit and compile here:
\documentclass[12pt,a4paper]{article}\usepackage[fleqn]{amsmath}\usepackage[utf8]{inputenc}\usepackage{mathtools}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{makeidx}\usepackage{parskip}\usepackage{graphicx}\usepackage{lmodern}\usepackage{verbatim}\usepackage[usestackEOL]{stackengine}\usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry}\author{Andrew}\stackMath\begin{document}\begin{align}Carlisle & \\&Sample Explanation \\\nu(u_1)&= f(x) \\ %Alignment Level 1&= \cosh(x) - \sinh(x) \\ %Alignment Level 1& G(x) =\!\begin{aligned}[t]& A(x) \\ %Alignment Level 2& H(x) = \int^Q_O z(x) dx \\ %Alignment Level 2& L(x) = %Alignment Level 2\!\begin{aligned}[t]& \frac{d}{dx} P(x) \\ %Alignment Level 3& S(x) %Alignment Level 3\end{aligned}\end{aligned}\end{align}\end{document}
Carlisle's method better matches my purpose than Segletes' method because you can utilize `\!\begin{aligned}[t]` recursively, thus it seems that there is no limitation on the number of alignment levels.
But notice that only the first 4 lines are tagged with integers 1-4. TAGS 5-end aren't there since Carlisle's method uses {aligned} for sub-alignment levels, and this naturally disables tagging. I was wondering if I may have integer tags for the last few lines 5-end while preserving the present alignment. Anything else beside {aligned}[t] that can execute sub-alignment levels?
