Home

not-read(positions) superposition
remove kets from the given superposition if their index is in 'positions'
if the input is a sequence, then apply this operator for each sub-superposition
index values start from 1, not 0
negative values are also valid, so -1 is last element, -2 is second last element, etc
if out of range, or not a number, return |> for that slot

-- a simple abstract example:
not-read(|1> + |3> + |5>) (|one> + |two> + |three> + |four> + |five> + |six> + |seven>)
    |two> + |four> + |six> + |seven>

-- negative indices example:
not-read(|-1> + |-3> + |-5>) (|one> + |two> + |three> + |four> + |five> + |six> + |seven>)
    |one> + |two> + |four> + |six>

-- if out of range, or not a number, ignore that 'position':
-- in this example, |fish> and |11>:
not-read(|1> + |fish> + |11> + |4>) (|one> + |two> + |three> + |four> + |five> + |six> + |seven>)
    |two> + |three> + |five> + |six> + |seven>