Expression of type Function

from the theory of proveit.physics.quantum.algebra

import proveit
# Automation is not needed when building an expression:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%load_expr # Load the stored expression as 'stored_expr'
# import Expression classes needed to build the expression
from proveit import A, Function
from proveit.physics.quantum import Qmult, var_ket_psi

# build up the expression from sub-expressions
expr = Function(Qmult(A), [var_ket_psi])

expr:

# check that the built expression is the same as the stored expression
assert expr == stored_expr
assert expr._style_id == stored_expr._style_id
print("Passed sanity check: expr matches stored_expr")

Passed sanity check: expr matches stored_expr

# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())

\left[A\right]\left(\lvert \psi \rangle\right)

stored_expr.style_options()

no style options

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	Operation	operator: 1 operand: 5
1	Operation	operator: 3 operand: 6
2	ExprTuple	5
3	Literal
4	ExprTuple	6
5	Variable
6	Variable