# Jyrki Lahtonen

Rusko, Finland

users.utu.fi/lahtonen/index_eng.html

Age: 50

# General non-sense:

Mostly I teach here. I want to encourage beginning students to think for themselves, so I use a lot of hints and comments. More advanced questions I often just answer.

However, I don't do 1-on-1 chat. Don't ask. My answers and comments are for all to see, so I don't like to hide them. Also I feel that entering a chatroom carries with it an obligation to continue an on-line discussion, and then I would not be using my time on my own terms.

# Relevant personal history:

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.

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Oct 24 at 10:47

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## Cute Determinant Question

Jul 30 '12 at 9:55

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Jul 9 at 21:07

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Sep 2 at 8:29

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## Why are vector spaces not isomorphic to their duals?

Aug 22 '11 at 18:20

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## Finding the limit of $\frac {n}{\sqrt[n]{n!}}$

Aug 4 '12 at 15:17

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## A pencil approach to find $\sum \limits_{i=1}^{69} \sqrt{\left( 1+\frac{1}{i^2}+\frac{1}{(i+1)^2}\right)}$

Oct 21 '11 at 23:41

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Apr 27 at 14:06

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Sep 15 at 0:06

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## Intuitive interpretation of the Laplacian

Jul 8 '11 at 18:01

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## Volume of Region in 5D Space

Sep 17 '11 at 12:15

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Jul 25 at 21:00

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Jan 16 at 8:20

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Aug 15 at 12:42