ring ring_def Set the current ring to the <<ring>> Example: [(x,y) ring_of_polynomials [[(x) 1]] weight_vector 0 ] define_ring /R set R ring_def In order to get the ring object R to which a given polynomial f belongs, one may use the command f (ring) data_conversion /R set cf. define_ring, define_qring, system_variable, poly (ring) data_conversion cf. << __ >>, getRing