I have seen the previous discussion on this same issue before (see Theorem name and number in margin, note in text), however this did not resolve anything as clearly as I had hoped.
Basically, I would like to have a visible margin (i.e:- a vertical line) on the left hand side of the page. Within the margin, I would like the section numbers (but not the name), equations numbers, theorem names and their respective numbers, but I am a bit a newbie in LaTeX and am I unsure how to go about doing this.
An example with the symbol "|" denoting the position of the margin would be:
3.1. | Continuous Groups | Definition 3.1 | Lie Group:..... (3.1.1.)| [SOME EQUATION HERE] Definition 3.2 | Lie Algebra:....
Thank you in advance.
Just some points of clarification (updated, based on the comments) 1. The document is one-sided, so only the left-hand side margin is of relevance. 2. Any suggestions on which theorem packages will be more suitable are welcome.