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7.2.4.1 poly declarations (plural)
- Syntax:
poly name = poly_expression ;
- Purpose:
- defines a polynomial.
- Default:
- 0
- Example:
| | ring r = 32003,(x,y,z),dp;
def R=nc_algebra(-1,1);
setring R;
// ring of some differential-like operators
R;
==> // characteristic : 32003
==> // number of vars : 3
==> // block 1 : ordering dp
==> // : names x y z
==> // block 2 : ordering C
==> // noncommutative relations:
==> // yx=-xy+1
==> // zx=-xz+1
==> // zy=-yz+1
yx; // not correct input
==> xy
y*x; // correct input
==> -xy+1
poly s1 = x3y2+151x5y+186xy6+169y9;
poly s2 = 1*x^2*y^2*z^2+3z8;
poly s3 = 5/4x4y2+4/5*x*y^5+2x2y2z3+y7+11x10;
int a,b,c,t=37,5,4,1;
poly f=3*x^a+x*y^(b+c)+t*x^a*y^b*z^c;
f;
==> x37y5z4+3x37+xy9
short = 0;
f;
==> x^37*y^5*z^4+3*x^37+x*y^9
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