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Additional
partial trace
English Wikipedia - The Free Encyclopedia
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Partial trace
In
linear algebra
and
functional analysis
, the
partial trace
is a generalization of the
trace
. Whereas the trace is a
scalar
valued function on operators, the partial trace is an operator-valued function. The partial trace has applications in
quantum information
and
decoherence
which is relevant for
quantum measurement
and thereby to the decoherent approaches to
interpretations of quantum mechanics
, including
consistent histories
and the
relative state interpretation
.
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