Harry Fearnley
The broad areas of interest to me are outlined below.
Go
I am particularly interested in any/all
material related to the
oriental board game Go
– Japanese: 囲碁 (Igo),
Chinese: 围棋/圍棋(WéiQí [WeiCh'i]), Korean: 바둑 (Baduk/Paduk).
The Go topics that I specialize in are:

An overview of shared life (seki) in Go, which links to my other work on seki
(Korean: bik, Chinese: shuang huo) ...

Seki: Hanezeki  shared life and (generalized) Hanezeki (Korean: jeochim bik), which I now prefer to call "Tail Seki"

Seki: Nakade  shared life and (generalized) nakade (Korean: chijung, Chinese: dianyan)

Gurvich and Gol'berg's 1980 paper on (fullyconnected) seki
 Shimada's work 
Igo no Suri  some formal/mathematical reflections  1958 edition

Bestiary  brain hurts!

Bestiary: Molasses Ko, etc

Bestiary: Rule challenging

Multistage Kos  Zippers, etc  some very improbable Ko (Korean: pae, Chinese: jie)

A little problem with many big kos, and its
interactive version
 The Most Difficult Problem Ever – a beautiful
problem from the Hatsuyoron (1713), requiring the use of
hanezeki/ tailseki –
see Thomas Redecker's work on
Igo Hatsuyoron, Problem 120,
for which I have provided an
interactive version (outofdate)!
In 2011, while working on this problem, I discovered/ invented a new form of Seki 
a Circular Tail Seki (AKA Circular Hanezeki). "Inside" the Seki, there are two groups, each of which can capture the same number (3) of "internal" (Nakade) stones.
However, there are two unusual features relating to the "Tail":
 The Seki includes a pair of groups  the "Tail", and the adjacent oneeyed group 
which share 5 liberties, on which neither wants to play, despite the fact that ...
 One of these two groups has an eye, and the other has none!
There is a description of how that Circular Tail Seki works.
It is the "simplest/ smallest" Circular Tail Seki (Hanezeki).
Since then (in 2017?)  along similar lines  I created the "largest" Circular Tail Seki.
Here, the "Tail", and the adjacent group, share 14 liberties (the maximum possible in a Circular Tail Seki)
on which neither player wants to play!
In this case, "inside" the Seki, each of the players can capture a 6stone Nakade shape (potentially worth 12 liberties).
Sensei's Library has links to
other material on the Igo Hatsuyoron 120 problem.
The AI KataGo has made several interesting discoveries in 2020  described in lifein19x19
 Go in Britain
 Computers and Go
 TsumeGo  Life and death problems
 Rulesets; Combinatorial Games Theory; Mathematics and Go
 Playing Go on the Internet
 Books about Go  various languages

A book review of Daniele Pecorini and Tong Shu's book The Game of WeiChi.
Mathematics
I also have various recreational interests in Mathematics  particularly in:
 Wavelets, Fourier Transforms etc  especially discrete versions, such as the
Hadamard/ Walsh Transform
 Tessellations, or Tilings.
 Conway's game "Life", as well as other Cellular Automata, and Artificial Life stuff.
I am particularly interested in Elementary Cellular Automata, especially since
Matthew Cook has demonstrated
that at least one of these is capable of universal computation.
Other
Other interests include:
Contact info:
Updated 2021/05/04
Page maintained by
harryfearnley@gmail.com