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Closure (mathematics)
In Mathematics, a set of elements can be considered
closed
under some specified operation, if the application of the operation to the elements
always
produces another element of the same type as the elements that constitute it.
Referenced in
Quantum Information Theory
A
subspace
of
V
V
V
is any subset of
V
V
V
, which is
closed
under addition and multiplication by complex numbers.
Closure (mathematics)