A reader at the Math 3 level can read the sorts of things that a research-level mathematician could — if you're Math 3, it's okay to throw LaTeX formulas straight at you, using standard notation, with a minimum of handholding.
At the Math 3 level, different schools of mathematics may have their own standard notation, so somebody who is Math 3 in one discipline or subject may not necessarily be Math 3 in another.
Writing for a Math 3 audience
When writing for a Math 3 audience, all bets are off on readability. You can use as much formal notation as you like in order to define your point properly and clearly.
Comments
Eric Rogstad
Would be great to have an example of the kind of formula one might expect to see.
Mark Chimes
Patrick LaVictoire I think that's a fair assumption for the moment. Later as Arbital grows the requisites can be refined to Calculus 0, 1, 2, 3; abstract algebra 0, 1, 2, 3 etc. Or else pages can just make use of specific pages as requisites (e.g. do you know what a 'group homomorphism' is).