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I want to see what the Groebner base of an ideal is, but the polynomials generating it have some constants inside. Is there any way to do that with Sage ? var('a') R.<x,y> = PolynomialRing(CC, 2, order='lex') I = ideal(y^4*a, y^2*x - y*a - x, y - x*a) B = I.groebner_basis() B

This doesn't seem to work. a is the constant. Also, this example is just a dummy, I want to know in general how to have constant coefficient in polynomials.

I want to see what the Groebner base of an ideal is, but the polynomials generating it have some constants inside. Is there any way to do that with Sage ? Sage?

var('a')
R.<x,y> = PolynomialRing(CC, 2, order='lex')
I = ideal(y^4*a, y^2*x - y*a - x, y - x*a)
B = I.groebner_basis()
BB

This doesn't seem to work. a is the constant. Also, this example is just a dummy, I want to know in general how to have constant coefficient in polynomials.