ideal(String) -- make an ideal using classic Macaulay syntax

Synopsis

• Function: ideal

• Usage:

  ideal s

• Inputs:
  • s, a string, in the form: "f1,f2,...,fr"
• Outputs:
  • an ideal

Description

Creates an ideal using an abbreviated format. Each polynomial has the form described in Classic. The polynomials are separated by commas. Spaces and newline characters are ignored.

i1 : R = ZZ/32003[a..d,x_1..x_4];

i2 : I = ideal "a+b2-1,(a+b)(c+d),x[1]-x[2]3"

             2                                    3
o2 = ideal (b  + a - 1, a*c + b*c + a*d + b*d, - x  + x )
                                                  2    1

o2 : Ideal of R

See also

• poly(String) -- make a polynomial using classic Macaulay syntax
• matrix(String)