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Bjørn Kjos-Hanssen's user avatar
Bjørn Kjos-Hanssen's user avatar
Bjørn Kjos-Hanssen's user avatar
Bjørn Kjos-Hanssen
  • Member for 14 years, 9 months
  • Last seen this week
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What's a generic integer?
Comeager = residual (which would then be a very evocative name here)
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What's a generic integer?
@KConrad perhaps my definition is equivalent to "comeager under the profinite topology".
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What's a generic integer?
@KConrad thanks for the comment. $m$ is such that $[b]_m\subseteq [a]_n$ which implies that $n$ divides $m$, I guess.
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How many Complexity Classes do you know?
@VilleSalo it seems to be inaccessible now :(
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Maximum number of subsets of the same size intersecting in at most one point
If the number is $\ge k$ and $m\ge k$ then $\binom{k}2 + (m-(k-1))k \le n$
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Generalising the union-closed sets conjecture from lattice to a larger class of posets
I wonder if 23 is actually the minimum cardinality of an example...
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Longest runs and concentration of measure
My Forum of Mathematics Sigma paper (published 2021) answered a 20-year old question of Jeff Shallit and cites this answer.
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Non-summable subsets of $[\omega]^{<\omega}$
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Non-summable subsets of $[\omega]^{<\omega}$
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Non-summable subsets of $[\omega]^{<\omega}$
@Wojowu actually you need condition 1, since otherwise $E$ could consist of all the singletons.
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Words with critical exponent $< \frac 73$
So @Ben's comment answered the question?
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VC dimension of Borel sets
This question is originally due to Keith Ramsay.
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