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# Tag Archives: Galois group

## Michael Atiyah

Sir Michael Atiyah died yesterday. I attended part of a course of lectures he gave on algebraic geometry in the 1970s (until term got too busy and I was forced to drop the course). They were excellent lectures, the sort … Continue reading

## Algebraic properties of chromatic polynomials, 2

My paper with Kerri Morgan on algebraic properties of chromatic roots (described here) has just appeared in the Electronic Journal of Combinatorics: you can find it here. I won’t say any more about it, except to pose a challenge which … Continue reading

Posted in open problems, Uncategorized
Tagged algebraic integer, chromatic polynomial, Galois group
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## Algebraic properties of chromatic roots

It has been a long time coming. I wrote back in 2011 about the work Kerri Morgan and I were doing on algebraic properties of chromatic roots. A paper has just gone on the arXiv. I will just recap here, … Continue reading

## A five-finger exercise

This morning at the Godsil 65 conference, Cheryl Praeger was wearing a T-shirt she was a bit ashamed of. It had been produced by the Australian Mathematics Trust to commemorate Niels Abel’s anniversary, and featured a quintic equation (he was … Continue reading

## A research visit, 2

This post is a description of the problem I was working on at Monash, algebraic properties of chromatic roots, with some background and history, and a bit about the progress we made on it. It is by no means a … Continue reading

Posted in doing mathematics, exposition
Tagged chromatic polynomials, Galois group, splitting field
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