aplavin
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 Jan 30 awarded Popular Question Jan 15 accepted Largest family of subsets Oct 12 awarded Tumbleweed Oct 7 comment Largest family of subsets That's actually not quite correct - if $n = 4k + 1$, one can get $n-1 = 4k$ triples, just using the same ones as for $n = 4k$. Oct 5 asked Largest family of subsets Sep 24 awarded Autobiographer Jul 2 awarded Curious Mar 20 accepted What's wrong in this reasoning of $l_\infty$ separability? Mar 20 comment What's wrong in this reasoning of $l_\infty$ separability? Thanks for pointing at this, if any of you post it as an answer, I would accept it for sure. Mar 20 comment What's wrong in this reasoning of $l_\infty$ separability? @DavidMitra: as each functional on $l_\infty$ is also a functional on $c_0$, the set of functionals on $c_0$ includes the set of functionals on $l_\infty$. Mar 20 comment What's wrong in this reasoning of $l_\infty$ separability? @DavidMitra: from 2. follows, that each continuous functional on $l_\infty$ can be narrowed to be a continuous functional on $c_0$ - and it's the same as the third statement. Mar 20 asked What's wrong in this reasoning of $l_\infty$ separability? Dec 11 awarded Benefactor Dec 5 accepted Linear independence of a modified system Dec 4 awarded Promoter Dec 2 revised Linear independence of a modified system edited body Dec 2 asked Linear independence of a modified system Nov 22 accepted Proving that $\cos(n^a t)$ doesn't converge to $1$ Nov 22 comment Proving that $\cos(n^a t)$ doesn't converge to $1$ @user37238: I mean pointwise convergence, for all $t$. So, if it doesn't converge for one $t$ - then what I need is proven. Nov 22 asked Proving that $\cos(n^a t)$ doesn't converge to $1$