Last modified 10 July, 2013

Frequently Asked Questions


What is the best email address to reach you with? You seem to use more than one.

Use or The latter is forwarded to

Why do you write emails entirely in the subject heading?

To keep it like a tweet; most things can be said in 140 characters.


Are you taking on Ph.D. students and postdocs?

I am happy to consider applicants for postdocs with a degree in physics or mathematics. I am not currently taking on Ph.D. students.

What is your current position?

I am Fellow at the London Institute for Mathematical Sciences and a Charge de Recherche in the French CNRS.

What is the London Institute for Mathematical Sciences (LIMS)?

LIMS is a private non-profit research institute in central London for theoretical scientific research, including pure mathematics.

What is the CNRS?

The CNRS (Centre National de la Recherche Scientifique) is the equivalent to the combined Research Councils in the UK, or the National Science Foundation in the US. My position is similar to a UK EPSRC Advanced Research Fellowship, but permanent.

What is your association with the University of Cambridge?

I was a graduate student and Junior Fellow at Cambridge. I now visit about once a month.


How can I obtain a copy of The Man's Book?

The best edition of The Man's Book is the third edition, available on It has 16 more sections and 35 more figures than the second edition, available on

How can I obtain a copy of The 85 Ways to Tie a Tie?

As of writing this, the 85 Ways is sold out in the English language. The only way to get a copy is by buying one secondhand, for example on Amazon.

I have discovered a new tie knot that is not listed in The 85 Ways to Tie a Tie and I want to tell you about it.

This book is based on two mathematics papers I wrote. It is not simply an enumeration of possible tie knots; it is also a proof that there are no others, at least according to the canonical definition of "tie knot". Before contacting me, check to see if the knot is listed on this page.

Thomas Fink

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The Man's Book
The 85 Ways to Tie a Tie
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