will be back for a few days this winter but not for long

r' can be many things, a derivative of a function, an element of the range of an operator Ar=r', for example a mirrored point in R^2 using the mirror matrix of any axis. It may also be the dual of a room, defined as B(r,\doubleK), if r is complete vector space. In general I like to call r' the different element of r, because I've always thought and wanted to think that r'\neq r. But in reality I don't know at all, I can just define that for myself, r' unequals r in any case. The fact is nothing is for us, except the illusion that every one of us gets thrown at. I stopped thinking that things are what they are, quite a while ago. Because they truly just are what they seem to be, and their existence depends on the viewer.

(state 17th of november 2024):
I've been offline here within the last 100 days, and because as of now, I am planning to be offline during the next years, I thought I'd give you a very simple example of what I'm doing at the moment, this might look hard at first but it's really not difficult once you first get it. Have fun with this (see picture down below) while I'm gone, english translation on the right side of the picture.