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Hi all,

I want to define a two sided ideal I=[xyxy-xy] in an unital associative free algebra K.<x,y>. But, the error I have faced to is the following:

ArithmaticError: Can only subtract the elements of the same degree.

Is there any way to define such an ideal in sage.

Thanks

Hi all,

I want to define a two sided ideal I=[xyxy-xy] in an unital associative free algebra K.<x,y>. But, the error I have faced to is the following:

ArithmaticError: Can only subtract the elements of the same degree.

Is there any way to define such an ideal in sage.

Thanks

Hi all,

I want to define a two sided two-sided ideal I=[xyxy-xy] I = [x*y*x*y - x*y] in an a unital associative free algebra K.<x,y>. But, the error I have faced to is the following:K.<x,y>.

ArithmaticError: But I get:

ArithmeticError: Can only subtract the elements of the same degree.
degree.

Is there any way to define such an ideal in sage.

ThanksSage?