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location Bratislava, Slovakia
age 35
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1d
comment Prove determinant of nxn matrix is (a+(n-1)b)(a-b)^(n-1)?
There already exists a MSE copy of this question: math.stackexchange.com/questions/757320/… (Perhaps this one can be deleted.)
1d
revised Advice for number theory library
(textbook-recommendation) is the only tag I see for book recommendations; if you see a more appropriate tag (or you think that this tag is not suitable here), feel free to edit the tags
1d
suggested suggested edit on Advice for number theory library
Apr
14
comment Connection between subnet and superfilter
It is worth mentioning that there are other possibilities to assign a net to a filter. It is possible to do it in a such way that finer filter gives a subnet. This is discussed in Pete L. Clarks' notes on general topology. I will also mention that there exist several definitions of subnet. The AA-subnet is defined in such a way, that finer filter corresponds to a subnet; but for this definition of subnet this fact is rather trivial.
Apr
14
revised Reference request: Heat kernel regularity near the boundary
added (reference-request) tag
Apr
14
suggested suggested edit on Reference request: Heat kernel regularity near the boundary
Apr
14
comment Find two triangles of longest side length 25?
There already is a copy of this question at MSE: math.stackexchange.com/questions/753294/… It is definitely more suitable site.
Apr
14
revised Find two triangles of longest side length 25?
added MathJax
Apr
14
suggested suggested edit on Find two triangles of longest side length 25?
Apr
10
comment Classic applications of Baire category theorem
There is a question at MSE: Your favourite application of the Baire Category Theorem
Apr
6
comment Which tools can identify scholarly papers that use the same types of equations?
Some older questions at MSE related to searching for formulas: meta.math.stackexchange.com/questions/10169/…
Mar
14
comment Separating the eigenvalues of a Hermitian matrix with a special block structure
The same question was posted on MSE: math.stackexchange.com/questions/704331/…
Mar
7
revised The norm of a separable Banach space can be determined by countable continuous linear functionals?
minor corrections (TeX, capitalization)
Mar
7
suggested suggested edit on The norm of a separable Banach space can be determined by countable continuous linear functionals?
Feb
25
revised Construction of a family of sets satisfying specific properties
tipo in the title (pecific -> specific)
Feb
25
suggested suggested edit on Construction of a family of sets satisfying specific properties
Feb
19
revised Weakly Compact Cardinal and Iterability
better formatting of Google Books link
Feb
19
suggested suggested edit on Weakly Compact Cardinal and Iterability
Jan
20
comment $2^{\omega_1}$ separable?
Related question on MSE: math.stackexchange.com/questions/97413/…
Jan
10
comment Articles with examples of Darboux functions without fixed points
BTW the name strongly Darboux function is used in my post for function which maps every non-trivial interval to $\mathbb R$.