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19h
revised Proof that every point can lie on a tangent to a curve
added 508 characters in body
23h
revised Fast partial-fraction decomposition
added 184 characters in body
1d
revised Very difficult sequence
edited body
1d
revised Can't determine if given relation is equivalence relation
added 987 characters in body
Jul
2
revised Proof the series is finite using following inequality
added 126 characters in body
Jun
30
revised Prove that $\frac{8}{5}\le 2a+b\le 8$
edited tags
Jun
29
revised Is there any algorithm or something to solve $\phi\left(x\right)=n$
added 1097 characters in body
Jun
26
revised Compute ratio of a rectangle seen from an unknown perspective
added 94 characters in body
Jun
21
revised Conditionally convergent - limit of series'
added 3 characters in body
Jun
21
revised If $G$ is simple and $deg_+(v) \ge k\ge 1$ , then there is a simple cycle of at least size $k+1$
added 5 characters in body; edited title
Jun
21
revised Connectedness of the Hausdorff distance.
Rewritten with explicit counterexample and thus could remove AoC
Jun
17
revised Is it a composite number?
added 6 characters in body
Jun
16
revised Show that $P(A_n\cap B_n)$ is of smaller order than $n^{-1/2}$.
added 27 characters in body
Jun
16
revised How can the median number of sexual partners be 6.1 and 3.6?
deleted 1 character in body
Jun
15
revised The high occurence of a number equals to the last few digits of its own square
added 545 characters in body
Jun
14
revised Graph and Number theory
added 1605 characters in body
Jun
13
revised $f$ differentiable at $a$, $\Longleftrightarrow$ $f(a+h)-f(a)=f'(a)h+\varepsilon(h)h$
added 25 characters in body
Jun
13
revised prove that for each $n \in\mathbb N$ odd, $\phi(n) \ne 2^{32}$
added 38 characters in body; edited title
Jun
11
revised Does every bijection of $\mathbb{Z}^2$ extend to a homeomorphism of $\mathbb{R}^2$?
added 2660 characters in body
Jun
8
revised The minimum value of $\log_{10}x+\log_x 10$
added 201 characters in body