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Apr
23
revised Induce measure between topological spaces.
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Apr
23
revised Distance from a point to empty set.
TeX
Apr
20
revised Fixed point Exercise on a compact set
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Apr
9
revised If $f'$ tends to a positive limit as $x$ approaches infinity, then $f$ approaches infinity
Learnt some english. So used it.
Mar
30
awarded  Notable Question
Mar
20
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Mar
15
awarded  Yearling
Mar
2
revised Is a prime factor of a number always less than its square root?
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Feb
17
revised Chapter 3 Hoffman Kunze Linear Algebra exercise 12
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Jan
22
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Jan
16
comment $A$ and $B$ homeomorphic if they are different sets in bigger topological space
No. ${}{}{}{}{}{}$
Dec
23
comment Sum of like powers equal to a power
While you´re asking a different question, this seems related.
Dec
12
revised Lagrange's identity in the complex form
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Dec
10
awarded  Revival
Dec
9
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Nov
2
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Oct
24
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Oct
23
revised Prove $\ker(T^n)=\ker(T^{n+1})$ and $\operatorname{range}(T^n)=\operatorname{range}(T^{n+1}).$
deleted 1 character in body
Sep
30
comment What is the definition of a set?
Which set theory are they talking about when they say that the thing which has, say, all the rings is not set? Why is not good to consider such a thing a set?
Sep
12
revised How to show $\lim_{n \to \infty} a_n = \frac{ [x] + [2x] + [3x] + \dotsb + [nx] }{n^2} = x/2$?
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