PS: sage: R.<z>=QQ[] sage: type(R) <class 'sage.rings.polynomial.polynomial_ring.PolynomialRing_field'> sage: type(z) <class 'sage.rings.polynomial.polynomial_element_generic.Polynomial_rational_dense'> sage: R=sin(z) sage: type(R) <class 'sage.calculus.calculus.SymbolicComposition'> sage: type(z) <class 'sage.rings.polynomial.polynomial_element_generic.Polynomial_rational_dense'> sage: R(z)=sin(z) sage: type(R) <class 'sage.calculus.calculus.CallableSymbolicExpression'> sage: type(z) <class 'sage.calculus.calculus.SymbolicVariable'>
That's all consistent! R respectively z get a new meaning if and only if they appear on the left side of an assignment. Cheers, Simon --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
