Jyrki Lahtonen

30,730 reputation

33989

bio	website	users.utu.fi/lahtonen/…
	location	Rusko, Finland
	age	49
visits	member for	1 year, 11 months
	seen	1 hour ago
stats	profile views	3,301

PhD from Notre Dame in '90.

Drifted from representation theory of algebraic groups to applications of algebra into telecommunications, mostly coding theory, and lately mostly teaching at college level.

3 graduate students with awarded PhDs

I have mostly worked at our local University at Turku, Finland. At one point I tried working for Nokia Research Center. It was ok, but an old dog didn't learn all the tricks, and then they downsized, so I returned to the Uni as a tenured lecturer.

	30,730 reputation	bio	website	users.utu.fi/lahtonen/…	visits	member for	1 year, 11 months
33989 badges		location	Rusko, Finland		seen	1 hour ago

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737 Answers

votes activity newest

48	Is $\lim\limits_{k\to\infty}\sum\limits_{n=k+1}^{2k}{\frac{1}{n}} = 0$?
35	How do we prove $n^n \mid m^m \Rightarrow n \mid m$?
32	Finding the value of $\sum\limits_{k=0}^{\infty}\frac{2^{k}}{2^{2^{k}}+1}$
31	Can the matrices $A$ and $I+A$ have the same determinant?
28	How can you show there are only 2 nonabelian groups of order 8?

30,730 Reputation

+10	Unramification of a prime ideal in an order of a finite Galois extension of an algebraic number field
+25	Irreducible representation of tensor product
+10	Linear Algebra - Rank of a matrix
+10	Compute value of $\pi$ up to 8 digits

3 Questions

votes activity newest

9	On the norm of a quotient of a Banach space.
6	Was the definition of $\mathrm{erf}$ changed at some point?
5	How small parallelograms are we guaranteed to get, when we select the two sides from different plane lattices?

209 Tags

522 abstract-algebra × 161	223 field-theory × 66
316 group-theory × 87	175 number-theory × 54
271 linear-algebra × 83	174 polynomials × 55
232 finite-fields × 98	170 homework × 69
224 elementary-number-theory × 58	163 matrices × 36

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