>> The answer to your question is essentially "yes" ... Thank you for your detailed response and links. I had in fact found some of them when searching, but clearly hadn't read them carefully enough. In particular, I had missed the use of vector_frame in the documentation of Affine Connections, although I note that 2 of your subsequent 3 examples appear to define frames without using this class.
I expect that these examples will indeed provide the guidance I need, and will work through them more carefully. Again, thank you. Tevian -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
