Thank you for your replies. For the application I had in mind it seems that 'floating-point' numbers are not suitable.
I was doing computations in sage: R = Zp(2,type='fixed-mod') sage: M = Matrix(R,4,[0, 0, 1, 1, 2^19, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1]) sage: M.inverse().base_ring() 2-adic Field with floating precision 20 sage: (M.adjoint()*M.det().inverse_of_unit()).base_ring() 2-adic Ring of fixed modulus 2^20 Unfortunately the syntax is a little cumbersome. Is there a shortcut to this? Invert a matrix without exending the base_ring (or throw an error) -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
