Top Posts
Recent comments
Blogroll
- Astronomy Picture of the Day
- Azimuth
- British Combinatorial Committee
- Comfortably numbered
- Diamond Geezer
- Exploring East London
- From hill to sea
- Gödel's lost letter and P=NP
- Gil Kalai
- Jane's London
- Jon Awbrey
- Kourovka Notebook
- LMS blogs page
- Log24
- London Algebra Colloquium
- London Reconnections
- MathBlogging
- Micromath
- Neill Cameron
- neverendingbooks
- Noncommutative geometry
- numericana hall of fame
- Ratio bound
- Robert A. Wilson's blog
- Since it is not …
- Spitalfields life
- Sylvy's mathsy blog
- SymOmega
- Terry Tao
- The Aperiodical
- The De Morgan Journal
- The ICA
- The London column
- The Lumber Room
- The matroid union
- Theorem of the day
- Tim Gowers
- XKCD
Find me on the web
-
Join 662 other subscribers
Cameron Counts: RSS feeds
Meta
Tag Archives: algebraic graph theory
Hoffman, Lovász and Haemers
At the weekend I attended remotely a memorial session for Alan Hoffman, organised by Bill Pulleyblank. I found it informative, as well as moving. Hoffman is well-known in the algebraic graph theory community for a number of remarkable achievements, including … Continue reading
Posted in events
Tagged Alan Hoffman, algebraic graph theory, eigenvalues, Laszlo Lovasz, optimization, WIllem Haemers
1 Comment
Busy times, 10: in Waterloo
After a week in London, off to Waterloo for Chris Godsil’s 65th birthday conference. The week at home was no holiday: among other things I managed to read and examine Christopher Harden’s PhD thesis (a nice study of fixed point … Continue reading
Posted in events
Tagged algebraic graph theory, antipodean animals, Chris Godsil, Elora, perfect state transfer, quantum, sandwiches, Waterloo
2 Comments
Dima Fon-Der-Flaass
Yesterday, Edwin van Dam reminded us of a conjecture he and Willem Haemers made ten years ago: almost all graphs are determined by their spectra. This contrasts with the situation for special classes of graphs such as trees, and indeed … Continue reading
Posted in history
Tagged algebraic graph theory, antichains, buildings, IBIS groups, Lambda-trees, matroids, twin trees
Leave a comment