I want to study stochastic partial differential equations, and the standard reference seems to be Hairer's notes - after all, he got the first Fields Medal for work on this topic.
However, I also noticed that his notes are rather terse, and hence I wanted to ask if anyone could suggest resources that complement his notes. Could you name some references, and comment on strengths/weaknesses/applications?
I like Hairer's notes, but of course these are lecture notes. And some introductory books can be easier to read since there are more explanations.
There are basically three approaches to analysing SPDEs: the “martingale (or martingale measure) approach”, the “semigroup (or mild solution) approach” and the “variational approach”. Hairer is using the semigroup approach. Now it depends which perspective you want. The same as in Hairer and therefore using the reference to understand Hairer's note more, or if you want to learn SPDEs from another perspective.