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bio website thales.doa.fmph.uniba.sk/…
location Bratislava, Slovakia
age 35
visits member for 3 years, 4 months
seen 4 mins ago

15h
revised variation of the Euler $\phi$ function?
added 1 character in body; edited tags
15h
revised Show there exists $x\in (0,1)$ such that $f(x) \leq \int_0^1 f(t) dt$
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16h
comment Proof that there is a bijection, if there are injective maps in both directions
Similar (duplicate?) question: math.stackexchange.com/questions/122498/…, you can also find several questions about Cantor-Bernstein theorem on this site: math.stackexchange.com/search?q=Cantor+Bernstein
16h
revised Proof that there is a bijection, if there are injective maps in both directions
more descriptive title
17h
revised Rank of a Matrix Sum
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18h
revised A special property of $\limsup$ in $\ell_1$
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19h
revised A special property of $\limsup$ in $\ell_1$
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22h
comment Help for proving rank of matrix
I've noticed that you have asked 4 questions in your first 2 days on the site. I wanted to make sure that you are aware of the quotas 50 questions/30 days and 6 questions/24 hours, so that you can plan posting your questions accordingly. (If you try to post more questions, StackExchange software will not allow you to do so.) For more details see meta.
22h
comment How to prove the following rank problems
Some more related links: google.com/search?hl=en&q=math+forum+%22I-AB%22+invertible planetmath.org/encyclopedia/… ocf.berkeley.edu/~wwu/cgi-bin/yabb/… artofproblemsolving.com/Forum/viewtopic.php?t=110427 More general version for rings: sosmath.com/CBB/viewtopic.php?t=33896
23h
comment How to prove the following rank problems
multiple questions posted as one (see meta.math.stackexchange.com/questions/6464/…)
23h
comment How to prove the following rank problems
Please, post only one question in one post. Posting several questions in the same post is discouraged and such questions may be put on hold, see meta.
23h
revised How to prove the following rank problems
edited tags
23h
comment How to prove the following rank problems
See: math.stackexchange.com/questions/48989/… and math.stackexchange.com/questions/978/… and math.stackexchange.com/questions/676333/…
23h
revised Using Chain Rule and Product Rule to find derivative
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23h
revised The number of antisymmetric relations which does not contain $(a,b)$
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23h
revised How do I find the sum of the series?
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23h
revised Radius of convergence
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23h
revised A circle wheel 28 inches in diameter rotates (moves) the same number of inches per second
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23h
revised How does $\frac{t^2}{t+1}$ equal $t-1+\frac{1}{t+1}$?
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23h
revised How would I solve these types of equations
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