I want to ask some questions in the Mathematics site. But I don't know how to write the proper math notations in the computer. For example how to write
- x^y ( where x is raised to power y).
- sign of congruence. ( x is congruengt = 1 (mod y) )
or other math notations. Is there any chart or link from where i can copy while typing my questions? or some other resource?