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Jun
2
answered What are some interesting blogs about general topology?
Jun
1
revised The closure of $(0,1)$ in the lower-limit topology on $\mathbb{R}$
added 13 characters in body; edited tags; edited title
May
31
awarded  Nice Answer
May
31
revised Induced map on simplices from order-preserving maps between finite ordinal numbers
transcribed from image
May
28
comment What do Set-Theoretic (General) Topologists study?
This should probably be closed as too broad. Suffice it to say, general/set-theoretic topology is still an active research area. A large percentage of the articles in Topology and Its Applications are in this area. Also, the book Open Problems in Topology II lists a large number of outstanding open problems. Also, the recently published Recent Progress in General Topology III is something to look at.
May
24
revised Show that $|\operatorname{Aut}(\mathbb{Q}(\sqrt[10]2))|=2$
added 9 characters in body; edited tags; edited title
May
24
revised What's the advantage of using bra-ket notation over inner-product notation?
added 95 characters in body; edited tags
May
23
revised A base generates an unique topology?
added 48 characters in body; edited title
May
23
revised Solution to differential equation is defined on $\mathbb R$
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May
22
comment Advantage of accepting non-measurable sets
At least you admit that there's an error with this answer. If only you chose to correct it days ago when this was first pointed out to you. Of course, I am not so naive as to think that you will ever correct this answer.
May
22
comment Limit vs interior definition of continuity
Whilst the information at this link may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
May
22
comment Advantage of accepting non-measurable sets
Comments are not for extended discussion; this conversation has been moved to chat.
May
22
reviewed Reject Calculate $\int_{0}^{1} \frac{x^3}{\sqrt{1+x^4}}dx$
May
22
revised Calculate $\int_{0}^{1} \frac{x^3}{\sqrt{1+x^4}}dx$
moved terrible title to body, gave a (slightly) better title
May
22
revised Show that if $(X,d)$ is compact then, every open covering of $X$ has a Lebesgue number.
deleted 4 characters in body; edited tags
May
22
comment The set of ordinals $< \alpha$ of a given cofinality $\kappa< \text{cf}(\alpha)$ is stationary
Perhaps you could identify the source of this proof.
May
21
revised Is the Sorgenfrey Line second countable?
deleted 27 characters in body; edited tags
May
21
revised Finding the northernmost latitude in a great circle that passes through two points on the sphere
added 39 characters in body
May
21
revised Finding the northernmost latitude in a great circle that passes through two points on the sphere
deleted 15 characters in body
May
21
revised Finding the northernmost latitude in a great circle that passes through two points on the sphere
problem statement quoted verbatim (from 6th edition)