Tim Ward ⭐🇪🇺🔶 #FBPE on Nostr: Mine was, as appropriate to particular subjects (Cambridge, 1970s). The hardest bit ...
Mine was, as appropriate to particular subjects (Cambridge, 1970s).
The hardest bit for me (we didn't do any crypto) was error correcting codes. I had to ask around to find someone who was prepared to give a supervision on that topic ... and the person who volunteered didn't understand it either off the top of his head but we worked through it together and I did, then, understand it. Forgotten it all since of course.
The bits of maths I have definitely used several times since include calculating the transitive closure of a sparse connectivity matrix ... which I've even had to code in SQL (in a table with a parent-child self-referential "foreign" key this gets you all the ancestors or all the dependents of a particular row).
The hardest bit for me (we didn't do any crypto) was error correcting codes. I had to ask around to find someone who was prepared to give a supervision on that topic ... and the person who volunteered didn't understand it either off the top of his head but we worked through it together and I did, then, understand it. Forgotten it all since of course.
The bits of maths I have definitely used several times since include calculating the transitive closure of a sparse connectivity matrix ... which I've even had to code in SQL (in a table with a parent-child self-referential "foreign" key this gets you all the ancestors or all the dependents of a particular row).