Macaulay2 » Documentation
Packages » Macaulay2Doc » matrices » determinants and minors » fittingIdeal
next | previous | forward | backward | up | index | toc

fittingIdeal -- Fitting ideal of a module

Description

fittingIdeal(i,M) -- the i-th Fitting ideal of the module M 

i1 : R = ZZ/101[x];
 
i2 : k = coker vars R

o2 = cokernel | x |

                            1
o2 : R-module, quotient of R
 
i3 : M = R^3 ++ k^5;
 
i4 : fittingIdeal(3,M)

            5
o4 = ideal x

o4 : Ideal of R
 
i5 : fittingIdeal(8,M)

o5 = ideal 1

o5 : Ideal of R

Ways to use fittingIdeal:

  • fittingIdeal(ZZ,Matrix)
  • fittingIdeal(ZZ,Module)

For the programmer

The object fittingIdeal is a method function.

The source of this document is in Macaulay2Doc/doc7.m2:293:0.