Gamamal
Reputation
25,938
95/100 score
 Mar1 reviewed Approve Number Theory Problem Mar1 answered Number Theory Problem Mar1 revised Number Theory Problem added 14 characters in body Mar1 revised Prove that f is a constant function. added 20 characters in body Mar1 answered Prove that f is a constant function. Mar1 answered Show that if $ab \equiv 1 \mod m$ then $\text{ord}(a) = \text{ord}(b)$ Mar1 revised what are some of the oldest and most accurate approximations of pi? added 523 characters in body Mar1 answered what are some of the oldest and most accurate approximations of pi? Feb27 comment Maximum weight of a topology on $\{ 1 , 2 , 3 , \ldots , n \}$ Thanks. I took $B(x)$ to be the intersection of all the open subsets containing $x$ (we can do it because there is a finite number of such subsets since the topology is finite)? Is this ok. Thank you Feb27 accepted Maximum weight of a topology on $\{ 1 , 2 , 3 , \ldots , n \}$ Feb27 awarded Strunk & White Feb27 comment Maximum weight of a topology on $\{ 1 , 2 , 3 , \ldots , n \}$ @pedro, I think the discrete has maximum weight. Feb27 accepted Topology in which there is a subbase smaller than any base. Feb27 asked Maximum weight of a topology on $\{ 1 , 2 , 3 , \ldots , n \}$ Feb27 asked Topology in which there is a subbase smaller than any base. Feb27 revised Finding $f'(x)$ if $x\neq 0$ using definition of derivative added 14 characters in body Feb27 answered “ If $f$ -$g$ are integrable over [a,b] then f and g are integrable over [a,b] ?” Feb27 answered Is an empty set equal to another empty set? Feb27 comment a differentiable function but its derivative is discontinuous everywhere Volterra's function is discontinuous in a set of positive measure. Feb27 comment Is $\sqrt{x^2} = x$? $i^2+3$ not 2i+3