TY - JOUR AU - Andradas Heranz, Carlos AU - Recio, Tomas AU - Tabera, Luis F. AU - Sendra, J. Rafael PY - 2009 DO - 10.1016/j.jsc.2008.09.001 SN - 0747-7171 UR - https://hdl.handle.net/20.500.14352/42076 T2 - Journal of Symbolic Computation AB - Let K subset of R be a computable field. We present an algorithm to decide whether a proper rational parametrization of a ruled surface, with coefficients in K((i), can be properly reparametrized over a real (i.e. embedded in R) finite field extension... LA - eng M2 - 192 PB - Elsevier KW - Parametric varieties KW - Field of definition KW - Simplification of parametrizations TI - On the simplification of the coefficients of a parametrization TY - journal article VL - 44 ER -