components  list the components of a direct sum
Description
components x  produces a list of the components of an element of a free module.
components M  the list of components for a module M which was formed as a direct sum, or {M} if M was not formed as a direct sum. Works also for homomorphism, chain complexes, and graded modules.
See also

vector  make a vector

directSum  direct sum of modules or maps

++  a binary operator, usually used for direct sum
Ways to use components :

components(ChainComplexMap)

components(GradedModule)

components(GradedModuleMap)

components(Matrix)

components(Module)

components(ChainComplex)  list the components of a direct sum