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differential -- returns the differential of a differential module

Synopsis

Description

This method returns the differential of a differential module.

i1 : R = QQ[x]/(x^3)

o1 = R

o1 : QuotientRing
i2 : phi = map(R^1, R^1, x^2, Degree=>2)

o2 = | x2 |

             1      1
o2 : Matrix R  <-- R
i3 : D = differentialModule phi

      1      1      1
o3 = R  <-- R  <-- R
                    
     -1     0      1

o3 : DifferentialModule
i4 : differential D

o4 = | x2 |

             1      1
o4 : Matrix R  <-- R

See also

Ways to use differential :

For the programmer

The object differential is a method function.