1,445 reputation
315
bio website kmlinux.fjfi.cvut.cz/…
location Prague, Czech Republic
age 27
visits member for 2 years
seen 21 hours ago

Math PhD student at Czech Technical University in Prague and at LIAFA in Paris.

Code licence details applicable on my posts on TeX.SX.


Nov
18
answered Notation for translating vectors
Nov
18
awarded  Organizer
Nov
18
revised Application of Farkas' Lemma
retag, improved formatting
Nov
18
comment Notation for translating vectors
Do they say what is $Z$? Because for me, this would mean a translation that "brings $Z$ to $A$", i.e., a translation "by $A-Z$".
Nov
18
comment Application of Farkas' Lemma
Well, firstly I don't think the question is clear, which might be a reason why it has no upvotes and no answers. What is $x$ and $X$? What does it mean when you put $\exists$ after a formula? And is there any condition on $v$?
Nov
18
suggested suggested edit on Application of Farkas' Lemma
Nov
18
revised Limit: $\lim_{n\to \infty} \frac{n^5}{3^n}$
Added missing `1/3`
Nov
18
suggested suggested edit on Limit: $\lim_{n\to \infty} \frac{n^5}{3^n}$
Nov
18
comment Limit: $\lim_{n\to \infty} \frac{n^5}{3^n}$
@hhsaffar In all honesty, the user wasn't able to specify what he does want, so I provided couple useful hints. It's a homework question, so providing hints is more than welcome.
Nov
18
comment Limit: $\lim_{n\to \infty} \frac{n^5}{3^n}$
@amWhy Really depends. Looking in the Calculus syllabus of my faculty: 1) suprema and infima, 2) sequences, 3) limits of sequences, 4) limits of functions, 5) derivative, 6) l'Hospital criterion
Nov
18
comment Limit: $\lim_{n\to \infty} \frac{n^5}{3^n}$
@amWhy Usually you learn l'H after limits and after derivatives, at least in my country.
Nov
18
asked SageMath: Embed all roots of a polynomial
Nov
18
comment Limit: $\lim_{n\to \infty} \frac{n^5}{3^n}$
@user109707 Not even the Sandwich theorem ? That is basically what you call an upper bound. Then you should be able to apply the 1st hint of me.
Nov
18
answered Limit: $\lim_{n\to \infty} \frac{n^5}{3^n}$
Nov
18
comment Finding -1 to irrational powers
@mrf If used in the context where $(-1)$ happens to be "just one of the values you use it for", I would probably not. But defining solely $(-1)^r:=\exp(i\pi r)$ is nothing less and nothing more than an abuse of notation.
Nov
18
revised Closure of Algebraic Field to Complex Conjugation
added 1 characters in body
Nov
18
revised Finding -1 to irrational powers
edited body
Nov
18
comment Closure of Algebraic Field to Complex Conjugation
Well, now it will take me a long while to absorb and understand this I think.
Nov
18
answered Finding -1 to irrational powers
Nov
18
revised Help in evaluating $\int \frac {t^4 \tan t}{2 + \cos t}~dt$
Improved formatting.