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Partial trace of a tensor product expression

Source: R/046_atoms_affine_partial_trace.R
partial_trace.Rd

Assumes expr is a 2D square matrix representing a Kronecker product of length(dims) subsystems. Returns the partial trace over the subsystem at index axis (1-indexed).

Usage

partial_trace(expr, dims, axis = 1L)

Arguments

expr

An Expression (2D square matrix)

dims

Integer vector of subsystem dimensions

axis

Integer (1-indexed) subsystem to trace out

Value

An Expression representing the partial trace