how would one go about finding torsion groups over the rationals, for example:
or
thank you.
Mazur's theorem narrows down the possibilities for to a very few possibilities, and then you may try using Nagell-Lutz's Theorem to find some torsion points with integer entries.
You may also try to read the following http://www.math.ucla.edu/~burhanud/p...ion_paper2.pdf
Tonio