resolution => DegreeLimit

DegreeLimit => n -- keyword for an optional argument used with resolution which specifies that the computation should halt after dealing with degree n.

This option is relevant only for homogeneous modules.

One might get some matrix entries of slightly higher degree than requested.

i1 : R = ZZ/101[x,y,z,w];

i2 : M = cokernel matrix {{x*y-z^2,y^2-w^2}}



o2 = cokernel {0} | xy-z2 y2-w2 |



                              1

o2 : R - module, quotient of R

i3 : res(M,DegreeLimit => 1)



      1      2

o3 = R  <-- R

            

     0      1



o3 : ChainComplex

i4 : res(M,DegreeLimit => 2)



      1      2      1

o4 = R  <-- R  <-- R

                   

     0      1      2



o4 : ChainComplex