An introduction to functional analysis for science and engineering

Discussion (14 Comments)Read Original on HackerNews

_alternator_•about 9 hours ago

Seem reasonably concise, but I think Kreyzsig's Introduction to Functional Analysis with Applications fills the "gap" that this paper wants to fill. It's readable, has applications, exercises, and is more complete.

dieselgate•about 7 hours ago

From my undergrad engineering math I understand some context here but am getting confused after a decade of programming. Words like "compact" and "closure" [0] probably do not translate directly to the mathematics space from software development - but don't really expect them to...

Thanks for the post it's a good kick in the rear to explore conceptually what eigenvalues/vectors are again!

[0]: from looking up "compact operator" https://en.wikipedia.org/wiki/Compact_operator

srean•about 9 hours ago

That sure is one compact document. Pun intended. The document is very readable too.

throwaway81523•about 9 hours ago

(2019). No exercises.

iamcreasy•about 5 hours ago

Does anyone know any applied functional analysis book? I have strong linear algebra foundation, but no real analysis.

wolfi1•about 5 hours ago

if you take the spectral theorem, for example, there is a direct connection between linear algebra and functional analysis, basically it's linear algebra in infinite dimensions

oakinnagbe•about 9 hours ago

Genuine question: does the writing tool matter at all here if the exposition is clear and mathematically correct? I’ve seen great notes written in Word, LaTeX, and even slides—quality seems independent of format.

throwaway81523•about 9 hours ago

I would say it's not statistically independent. See https://scottaaronson.blog/?p=304 item #1. So we get to add another exception, which is fine.

anioko1•about 8 hours ago

Interesting!

mswphd•about 6 hours ago

both no in principle, and when you're used to reading LaTeX, word is ugly. It's a milder form of how if these notes were handwritten it wouldn't matter, but it would also be less appealing than them being typeset well.

hamburgererror•about 12 hours ago

Not LaTeX...

CyLith•about 11 hours ago

DABM writes everything in MS Word.

DarkNova6•about 11 hours ago

So... ?

maleldil•about 6 hours ago

It's "bad form" to write STEM papers in Word. Which is stupid, of course, as every major publisher offers both Word and LaTeX templates. I wish they'd offer Typst too.

An introduction to functional analysis for science and engineering

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Discussion (14 Comments)Read Original on HackerNews