[GAP Forum] How to set the ring for szy computation in homalg in gap system

[Lee Martin CCNP]

How to set the ring for szy computation in homalg in gap systemZZ := 
HomalgRing();
H := HomalgMatrix("[1,x^2+y, x*y-y*z, 0, 0 \
0, x*z-y, z-x, 0, 0 \
0, 0, 0, x^2+y, x*y-y*z \
1, 0, 0, x*z-y, z-x]", 4, 5, ZZ);Regards,Martin                                 
          
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