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Feb
9
comment Math and Logic of Infinite Chess
I cast the third vote to undelete this post since the contest's results are published (linked in the comments to the question), so there seems to be no harm in making this answer available to everyone.
Feb
9
awarded  Custodian
Feb
9
reviewed Reviewed Changing Numbers To Prescribed Values Under Special Limitations
Feb
9
reviewed Looks OK Projection of the third dual of a Banach space onto the first dual
Feb
9
reviewed Leave Open Statistics Question - Normal Distribution
Feb
9
reviewed Approve Wiggly polynomials
Feb
3
reviewed Leave Open If $\psi h$ is in $L^2$ for all $h\in L^2$, must $\psi$ be essentially bounded?
Feb
3
reviewed Approve Limit question help please here?
Feb
3
comment Non-isomorphic atomless Boolean algebras
I suppose it's a matter of background and culture. I've seen reduced measure algebra used for the same thing (I think Givant/Halmos use that). However, it doesn't make much sense to me to use the term measure algebra as a synonym of $\sigma$-algebra and from this point of view $\Sigma/\mathcal{N}$ is pretty much the only possible interpretation. It seems that for analysts $\Sigma/\mathcal{N}$ is the interesting thing to consider, not $\Sigma$ itself.
Feb
3
awarded  Informed
Feb
3
awarded  Custodian
Feb
3
comment Spectrum of the sum of two commuting matrices
@Theorem: Section 11 in the current version is called Nullstellensätze and in any case the pdf is fully searchable...
Feb
3
reviewed Satisfactory Congruence relationship used for primitive residue classes modulo n result
Feb
3
comment Proof of inequality involving surds
There were a few edits that seem to have changed/corrected mathematical content in the OP. I don't think it's a good idea to do that and reviewers should look more closely...
Feb
3
comment Non-isomorphic atomless Boolean algebras
For me the measure algebra of a measure space is the algebra of measurable sets modulo the ideal $\mathcal{N}$ of null sets. Thus, $\mathfrak{A} = \mathfrak{L}/\mathcal{N} \cong \mathfrak{B} / (\mathfrak{B} \cap \mathcal{N})$ has cardinality $\mathfrak{c}$. Otherwise ccc wouldn't tell $\mathfrak{A}$ and $\mathfrak{B}$ apart, would it? :)
Feb
3
comment Is Topology an important class to take before Functional Analysis?
Thanks for the feedback, that's very nice to hear and I really appreciate it. Good luck with your further studies!
Feb
3
reviewed Reject Is A∨¬A a tautology when there is a proof (by contradiction)?
Jan
4
awarded  Yearling
Dec
26
comment Is Hom$(G,-)$ left exact if morphisms are required to be continuous?
Hi Ben, I just stumbled over this thread: in view of the accepted answer, maybe you're interested in having a look at my expository paper on exact categories where I give a hands-on approach to Quillen's theory. Best wishes and a happy New Year, Theo
Dec
23
reviewed Leave Open How you review the contents which you have learnt several month before?