Matt N.

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Embarked on reading Todorchevich and Farah.

Fundamenta Mathematicae.

Biblioteka Wirtualna Matematyki.

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821 Posts

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2h	asked	On Lévy collapsing the reals
13h	answered	Question Regarding the Axiom of Extensionality
1d	answered	Question on Urysohn's lemma
May 3	asked	Another question about Cohen's article
Apr 30	asked	Dissecting a proof of the $\Delta$-system lemma (part II)
Apr 29	asked	Dissecting a proof of the $\Delta$-system lemma
Apr 25	answered	Algebraic Topology
Apr 24	answered	Examples of Banach spaces
Apr 24	answered	An infinite union of closed sets is a closed set?
Apr 22	answered	Omega, well ordering and the cumulative hierarchy $V$.
Apr 18	asked	Two questions related to the “almost disjoint number” $\mathfrak a$
Apr 17	answered	In set theory, what does the symbol $\mathfrak b$ mean?
Apr 17	asked	Cardinal characteristics — generalisation?
Apr 16	asked	A follow up question on completeness of filter (generalised to p.o.s)
Apr 16	asked	Question about definition of $\kappa$-completeness of filter
Apr 14	asked	Neatest proof that set of finite subsets is countable?
Apr 9	asked	Exercise in Just/Weese (amoeba forcing) (1/2)
Apr 6	answered	In $\mathbb{Z}[x]$, let $I =\{f (x) \in \mathbb{Z}[x] \mid f (0) = 0\}$. Prove that $I = \langle x \rangle$.
Apr 6	answered	Limit Ordinal Question
Apr 5	asked	Proof of $CFE \implies BPI$

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