Apparently, this user prefers to keep an air of mystery about them.
3 Divisibility by a prime number p. feb 19
2 Let $(x_n)$ be a sequence that converges to a number x. Show that $(s_n)$ converges to x as well. feb 16
1 Differential functions Probem jan 4
1 Prove that $int(A)=A\setminus bd(A)$ feb 17
1 vectors , dot product feb 19