<p>Thanks everyone! I understand the stipend thing now. Had just one more question: how early can you start doing research in math with a professor in your university? I will be done with multivariable calculus and intro to theoretical math (proof writing/reading course) by the end of my freshman year. I fear of approaching to a professor to ask if I can join to his/her research because I am more afraid that he/she will say: “what the hell you know?”</p>