17,751 reputation
53497
bio website tancast.com/wp-content/…
location
age
visits member for 3 years, 6 months
seen 15 hours ago

May
11
revised $\lim_{n \to \infty}\sum_1^n \frac{(\log k)^4}{ k^2}$ converges?
deleted 3 characters in body; edited title
May
11
revised Which sets are present in every model of ZF?
added 305 characters in body
May
11
revised Which sets are present in every model of ZF?
Small typo corrected.
May
9
revised Is there a set that is both a sigma algebra and a topology but not a powerset?
Redundancy removed.
May
9
revised Is there a set that is both a sigma algebra and a topology but not a powerset?
Redundancy removed.
May
4
revised What operations is a metric closed under?
edited tags
May
3
revised Which sets are present in every model of ZF?
I tried to make my question mathematically precise.
Apr
30
revised Dissecting a proof of the $\Delta$-system lemma (part II)
edited tags
Apr
29
revised Proof of vector calculus identities
Tab removed.
Apr
25
revised True or False; Functional Analysis
deleted 2 characters in body
Apr
25
revised Is a bounded and continuous function uniformly continuous?
edited title
Apr
25
revised Is a bounded and continuous function uniformly continuous?
added 2 characters in body
Apr
24
revised An infinite union of closed sets is a closed set?
added 3 characters in body
Apr
17
revised Determine the closure of the set $K=\{\frac{1}{n}\mid n\in\mathbb N\}$ under each of topologies
added 22 characters in body
Apr
17
revised Example of bijection from $\mathbb{Q} \to \mathbb{Q} \times \mathbb{Q}$
edited tags
Apr
15
revised Going down theorem
added 18 characters in body; edited tags
Apr
13
revised Doubt on rational and real numbers
number theory tag removed
Apr
7
revised Structure on manifolds
added 13 characters in body; edited tags; edited title
Apr
6
revised In $\mathbb{Z}[x]$, let $I =\{f (x) \in \mathbb{Z}[x] \mid f (0) = 0\}$. Prove that $I = \langle x \rangle$.
edited tags
Apr
6
revised In $\mathbb{Z}[x]$, let $I =\{f (x) \in \mathbb{Z}[x] \mid f (0) = 0\}$. Prove that $I = \langle x \rangle$.
added 101 characters in body