### Top Posts

### Recent comments

- T Tamizh Chelvam on Graphs on groups, 6
- Peter Cameron on Mathematics and religion?
- edibittencourt on Mathematics and religion?
- dc207 on On the Frattini subgroup
- Josh Paik on Hoffman, Lovász and Haemers

### Blogroll

- Alexander Konovalov
- Annoying precision
- Astronomy Picture of the Day
- Azimuth
- Bad science
- Bob Walters
- British Combinatorial Committee
- CIRCA tweets digest
- CoDiMa
- Coffee, love, and matrix algebra
- Collecting reality
- Comfortably numbered
- Computational semigroup theory
- DC's Improbable Science
- Diamond Geezer
- Exploring East London
- From hill to sea
- Gödel's lost letter and P=NP
- Gil Kalai
- Haris Aziz
- Intersections
- Jane's London
- Jon Awbrey
- Kourovka Notebook
- LMS blogs page
- Log24
- London Algebra Colloquium
- London Reconnections
- Marie Cameron's blog
- MathBlogging
- Micromath
- Neill Cameron
- neverendingbooks
- Noncommutative geometry
- numericana hall of fame
- Paul Goldberg
- Ratio bound
- Robert A. Wilson's blog
- Sheila's blog
- Since it is not …
- Spitalfields life
- St Albans midweek lunch
- Stubborn mule
- Sylvy's mathsy blog
- SymOmega
- Tangential thoughts
- 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
- Vynmath
- XKCD

### Find me on the web

### Cameron Counts: RSS feeds

### Meta

# Tag Archives: entropy

## Entropy and groups

Yesterday I gave a talk on a theorem of Terence Chan, which he spoke about at a network coding meeting at Queen Mary in late 2012. He sketched a proof on the common room table after the talk, and I … Continue reading

Posted in exposition
Tagged entropy, groups, information, random variables, Shannon, subgroups, Terence Chan
1 Comment

## Monkeys and typewriters

(Picture by New York Zoological Society, from Wikimedia Commons) Ford was wildly excited. “Arthur!” he said, “this is fantastic! We’ve been picked up by a ship powered by the Infinite Improbability Drive! This is incredible! I heard rumours about it … Continue reading

## Size

Last week we had a fascinating seminar by Tom Leinster, from Glasgow, with the title “Entropy, diversity and magnitude”. The abstract is here, and certainly suggested something interesting in prospect. I’ll introduce the topic with a modification of one of … Continue reading