Hi Fgard,
Once you've had a chance to have a good look at it, I'd appreciate your opinion/feedback.
Like I said, it's quite an unconventional approach, so you may need to get your head around their style a bit, but really cool once you get going.
ScmUtils is a bit of an albatross, but does work...
A very interesting book, with a quite distinctive approach, is Sussman, Wisdom and Farr's "Functional Differential Geometry", also available free online at https://groups.csail.mit.edu/mac/users/gjs/6946/calculus-indexed.pdf
The different thing about this book is that it is supported by...