‣ KernelSubobject ( phi ) | ( attribute ) |
Returns: a homalg submodule
The kernel ideal of the ring map phi.
‣ KernelEmb ( phi ) | ( attribute ) |
Returns: a homalg map
The embedding of the kernel ideal Kernel
(phi) into the Source
(phi), both viewed as modules over the ring R :=Source
(phi) (cf. Kernel
(4.2-1)).
‣ Kernel ( phi ) | ( method ) |
Returns: a homalg module
The kernel ideal of the ring map phi as an abstract module.
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