preprint-author: 
Araceli Bonifant, John Milnor
preprint-title: 
Group Actions, Divisors, and Plane Curves
preprint-abstract: 

After a general discussion of group actions, orbifolds, and "weak orbifolds" this note will provide elementary introductions to two basic moduli spaces over the real or complex numbers: First the moduli space of effective divisors with finite stabilizer on the projective space ℙ1 modulo the group PGL2 of projective transformations of ℙ1; and then the moduli space of effective 1-cycles with finite stabilizer on ℙ2 modulo the group PGL3 of projective transformations of ℙ2.

  arXiv:1809.05191
preprint-year: 
2018