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9m
revised Existence of a map
added 28 characters in body
2d
revised $G =(V,E)$ is $k$-connected ($k \geq 2$), prove that for every subset $S \subseteq V $, |S|=k there exists a cycle in $G$ that goes through all of $S$
added 23 characters in body; edited title
2d
revised How come $\ n\ $ always divides at least one of the item of the sequence?
edited body
Aug
1
revised Can't figure it out, why is this answer is right. By what pattern
added 86 characters in body
Jul
31
revised A curious proof of L'Hospital's rule
added 787 characters in body
Jul
31
revised Mathematics Radical Numbers Problem
added 35 characters in body
Jul
28
revised Complement of the union of countably many , mutually disjoint , non-empty open balls in $\mathbb R^n , (n >1) $ is path connected?
added 66 characters in body
Jul
28
revised Why is $F'(x) = 2x·\tan(x^2)-\tan x$ if $F(x) = \int_{x}^{x^2}\tan u\, \mathrm du$?
added 2 characters in body; edited title
Jul
28
revised Why is $F'(x) = 2x·\tan(x^2)-\tan x$ if $F(x) = \int_{x}^{x^2}\tan u\, \mathrm du$?
added 2 characters in body; edited title
Jul
27
revised The difference between Quotient Set and other definition
deleted 33 characters in body
Jul
26
revised Show the graph is Jordan region with volume 0
added 50 characters in body
Jul
23
revised Four mathematical notations for fraction $1/999$ and how to show/present they are equal
deleted 65 characters in body
Jul
22
revised Seven points in the plane such that, among any three, two are a distance $1$ apart
added 368 characters in body
Jul
20
revised Question about Entire functions
deleted 3 characters in body
Jul
10
revised Prove that $x\ge n(n-1)(n-3)/8$, where $x$ is the number of $C_4$ cycles in a graph.
deleted 229 characters in body
Jul
10
revised Prove that $x\ge n(n-1)(n-3)/8$, where $x$ is the number of $C_4$ cycles in a graph.
added 144 characters in body
Jul
10
revised Prove that $x\ge n(n-1)(n-3)/8$, where $x$ is the number of $C_4$ cycles in a graph.
added 59 characters in body; edited title
Jul
10
revised Finding constant acceleration required to hit a target where mag(a) = n
added 57 characters in body
Jul
8
revised A free group construction with real (not integral) exponents?
deleted 7 characters in body
Jul
5
revised Proof that every point can lie on a tangent to a curve
added 508 characters in body