>>13371469Seeing as you don't know shit about mathematics and you want to give him something with thought and physical value I would recommend you get something mathematical of historical or æsthetical significance. As student of math I doubt he's ever really read any of the "classics" so I believe it would be interesting to him intellectually.
Examples of books you might buy:
> Aristotle · · · · · · · · · · · · · · · The Organon *> Newton · · · · · · · · · · · · · · · · Philosophiæ Naturalis Principia Mathematica *> Bolzano · · · · · · · · · · · · · · · · Wissenschaftslehre * † > Boole · · · · · · · · · · · · · · · · · The mathematical analysis of logic *, The Laws of Thought *> Frege · · · · · · · · · · · · · · · · · The Foundations of Arithmetic * , Begriffsschrift *> Russell · · · · · · · · · · · · · · · · Introduction to Mathematical Philosophy> Russell & Whitehead · · · · · · Principia Mathematica* particularly interesting suggestions; hopefully some of this wouldn't just bore him, I tried to pick philosophically, historically, interesting texts here over purely technical ones.
† English translations look way to expensive, maybe don't bother. Recommend a digital version of the book (e.g. pirate it like I did)
Any anons know better books she could afford to buy physically? Am I on the right track? Genuinely interested to know.
I don't know why but I personally really like antique books, if he's anything like me I think he would appreciate either a leather bound or an antique book most (though the subject of an antique book is usually beside the point of having, viz. it's old) but as long as the thought is there it should all be fine.
Buy him, also, if you can, some nice pens : )