## LaTeX Packages

I am using LaTeX for almost all of my documents since my third semester, but I just recently (1-2 months ago) stumbled upon two packages I definitely would not like to miss anymore (besides the usual ones for writing math texts, of course): cleveref and xparse. Auto-updating your references When writing up mathematical statements I am sometimes unsure if it should be a theorem, proposition, lemma or claim. A proposition would certainly be renamed to a claim if I do not plan to prove it; or a lemma if it turns out later that I do need it part way to prove a theorem....