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My name is Tor Erlend Fjelde and I'm currently a PhD student in the Computational and Biological Learning (CBL) lab at University of Cambridge. This is began in Sept 2020, but prior to that I did a BSc (Hons) in Mathematics at University of Edinburgh.

I used to do marvelous work as a parking guard during the summers at Preikestolen/Pulpit rock. The finger-pointing and hand-waving required for this line of work prepared me well for hours upon hours of writing mathematics (especially the hand-waving!) and programming, while cleaning toilets prepared me for life ; even when faced with shit on the wall, I am unphased.


This blog was born out of a convenient publishing feature provided by org-mode in Emacs, allowing me to provide my personal wiki in a highly customizable and available viewing format. Hopefully these might prove themselves useful in some way; information or motivation.
Further, I find trying to explain topics to others, in medium such as a blog post, to be a very efficient way of exposing flaws in my own understanding.

My interests are:

  • Mathematics
  • Machine learning
  • Computer science
  • Physics (did two years in a Physics Bsc. before transferring to Mathematics Bsc. for my third and fourth year)
Other than the above, or maybe as a result of those, you will most certainly intrigue me by mentioning finance/economics, electronics, biology, chemistry, neuroscience, psychology, etc.


I make heavy use of the flash-card application Anki in my learning process, and I intend to attach my Anki decks for each of the topics to corresponding posts and wiki-pages.

Slightly to my surprise, I've found flash-cards to be immensely useful for mathematical subjects. My original intention was to use the flash cards to help recall definitions and theorems, but it ended up being an incredibly useful tool for forcing re-visitation of concepts. I've found myself creating cards for concepts I do not yet understand, and after revisiting this card once a day over the next couple of days, the pieces fall into place. Finally, after having created cards once, they can be used to quickly revise these subjects.