%0 Journal Article
%A Andradas Heranz, Carlos
%A Recio, Tomás
%A Tabera, Luis F.
%A Rafael Sendra, J.
%A Villarino, Carlos
%T Proper real reparametrization of rational ruled surfaces
%D 2011
%@ 0167-8396
%U https://hdl.handle.net/20.500.14352/42069
%X 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 of K. Moreover, in the affirmative case, the algorithm provides a proper parametrization with coefficients in a real extension of K of degree at most 2.
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