Trefethen and Bau called numerical linear algebra practical functional analysis (I'm only slightly paraphrasing.)
I hadn't seen this point emphasized as much in optimisation. But, lo and behold today I encountered this: a forecasting problem phrased as infinite dimensional optimisation on an interval including negative time.
PhD Student @ Oxford
#SciML <-> optimisation | numerical methods | neural ODEs
Postgraduate member @ DataSig