Hi all I work a lot with finite fields and polynomials over these, and the standard string representation of finite field elements as polynomials is not very convenient for me; I would much prefer to represent each non-zero element as a power of the field's generator. I am having trouble making the Sage Notebook do this for me.
Givaro fields support in their constructor an argument repr which should set the standard representation of the elements. The possibilities are log, int and poly. poly is the standard and log is close to what I want. However, there are some issues with log: it makes the str representation of a field element be just an integer representing the power of the field generator (with the convention that 0 is the 0 element and F.cardinality - 1 is the 1 element), while I would like a string like "generator^power" and "0" for the zero element. I have written a small patch to make it work like I want. More importantly, though, it seems that the Notebook does not use this representation hint at all when showing field elements! I have tried writing a patch for sage.rings.finite_rings.element_givaro adding a str-method and repr- methods with both one and two underscores around the name, but that does not help. It works in the shell. Which method does the Notebook call for representing finite field elements? If someone can help me find this function so I can write a patch on my machine, we could take up the discussion on whether it could be sensible to let the above representation of finite fields be the standard when specifying "repr = 'log'". Or even the standard representation when not specifying repr? Thanks and regards, Johan -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
