465 reputation
212
bio website reilurekrytointi.fi/video/…
location Kuopio, Finland
age 31
visits member for 2 years, 10 months
seen Jul 19 at 7:36

I am a mathematician from Finland. In maths, my main interest are in algebra and number theory. Nowadays I mostly read mathematics on my own and look for an interesting math projects.


Jul
10
comment IMO 2014 problem 3, first day
Have you seen artofproblemsolving.com/Forum/viewtopic.php?f=1098&t=596927 ?
Jul
2
awarded  Curious
Jun
21
awarded  Tumbleweed
Jun
14
asked Are there weak and strong forms of Thaine's theorem?
Jan
8
comment Prove that $ \displaystyle \lim\limits_{n \rightarrow \infty} \left(\frac{23n+2}{4n+1}\right) = \frac{23}{4} $.
It is not correct. You have to define symbols before you use them. Therefore, there is a mistake on the line $$ \displaystyle \vert \frac{23n+2}{4n+1} - \frac{23}{4} \vert < \epsilon.$$ Before that you have to write for example "Choose an arbitrary positive real number $\epsilon$".
Oct
27
comment Question about Right Angles
I think you have to define the right angle without degrees and you have to define how to measure angles. Otherwise I can say your current definition is wrong as the measure of right angle is $\pi/2.$
Oct
8
comment Combinatorial proof of $\sum\limits_{k=0}^n \binom{2k}{k} \binom{2n-2k}{n-k} =4^n$
math.stackexchange.com/questions/72367/…
Oct
2
awarded  Nice Answer
Oct
2
awarded  Yearling
Oct
2
revised Inequality…(RMO $1994$…question $8$)
added 101 characters in body
Oct
2
revised Inequality…(RMO $1994$…question $8$)
added 2 characters in body
Oct
2
answered Inequality…(RMO $1994$…question $8$)
Sep
13
awarded  Critic
Aug
17
revised Proof on an equilateral triangle with a cevian extended to its circumcircle
added 1 characters in body
Aug
17
answered Proof on an equilateral triangle with a cevian extended to its circumcircle
Aug
14
comment Is there an algorithm to determine if a closed form solution exists?
Well, I was looking something bigger theorem which gives Galois theory and Risch's algorithm as a special case.
Aug
14
asked Is there an algorithm to determine if a closed form solution exists?
Aug
12
awarded  Nice Question
Aug
5
comment Learning proofs for exams
As I was studying, I learned the ideas of proofs. It wasn't important to remember every details of the proof but if I remembered for example that this theorem follows from Zorn's lemma or by transfinite induction, I was often able to fill the details in the exams.
Aug
5
revised Find $n^{th}$ term of $\frac23,\frac35,\frac58,\frac8{13}\dots$
added 44 characters in body