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Just when I thought I was out, they pull me back in


36m
comment Where is the Erdos-Rado theorem stated in Erdos and Rado's Bull AMS paper?
Thanks! Now you point it out, it does seem clearer; I guess I was just left dazed by the length of the paper
37m
accepted Where is the Erdos-Rado theorem stated in Erdos and Rado's Bull AMS paper?
37m
comment Where is the Erdos-Rado theorem stated in Erdos and Rado's Bull AMS paper?
Thanks! Avshalom and you answered almost simultaneously. Since the system only allows me to accept one answer, I am accepting Avshalom's in the spirit of "redistributing wealth" :) no offence intended
43m
comment Where is the Erdos-Rado theorem stated in Erdos and Rado's Bull AMS paper?
@AndresCaicedo Thanks. Did you mean subscript 2 in your comment? Or is the subscript $\kappa$ case a straightforward consequence of the subscript 2 case?
1h
comment Not especially famous, long-open problems which anyone can understand
@Dal I am not a number theorist, but I believe that a solution here would require one to introduce new techniques or make significant improvements to existing techniques. Note that the original question did not ask for questions which were "important to current mathematical research", merely that "There should already exist at least a small community of mathematicians who will care if one of these problems gets solved."
1h
asked Where is the Erdos-Rado theorem stated in Erdos and Rado's Bull AMS paper?
4h
reviewed Close about the weak comparison principle for p - Laplace equation
4h
comment about the weak comparison principle for p - Laplace equation
This question has been answered elsewhere
4h
comment Carlson's translatability
Could you please link to your question on MSE?
4h
comment Is every closed subgroup of dual group an annihilator?
Isn't this just (the Galois connection underlying) Pontryagin duality?
8h
comment this complex inequality have some background?and we can find stronger than this inequality?
I have not downvoted, and I have not voted to close, but one possible reason for the negative reaction is that you have asked many technical questions about inequalities without explaining why you want the answers, whether they are exercises that your supervisor has assigned to you, whether they are needed for your own research, which special cases you have already tried to verify, and so on.
12h
reviewed Leave Closed Linear algebra over principal rings 1
1d
comment What are the Applications of Hypergraphs
I rolled back the previous edit which was incredibly minor and just tinkering with the OP's English to no significant effect, on a question which has long been inactive
1d
revised What are the Applications of Hypergraphs
rolled back to a previous revision
1d
comment $V(A)\cong {\mathbb N}\cup\{0\}$ and $$V(A_+)\cong\{(m,n)\in {\mathbb Z}^2 \mid m,n \geq 0, \hbox{ $m+n$ even}\}. $$
Didn't we see the same question recently, and wasn't it closed?
2d
comment Open problems in compressed sensing
There used to be a maxim on MO of the form "MathOverflow is not for people to request other people to write encyclopaedia entries for them". I therefore suggest that Felix should try to narrow his question down first, after looking online at research and survey articles in compressed sensing
2d
reviewed Leave Open Real algebraic solution
Dec
19
comment How many k-subsets of the integers {1,…,n} sum to N?
Could you give a bit more background for your question? For instance, where did this question arise? Would you be happy with an asymptotic formula? etc
Dec
19
comment transition matrix
@11156 What is the point of reformatting an off-topic question?
Dec
19
comment transition matrix
This question appears to be off-topic here because it is asking people to help with your homework