Expression of type NamedExprs

from the theory of proveit.physics.quantum.circuits

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, IndexedVar, NamedExprs, R, Variable

# build up the expression from sub-expressions
sub_expr1 = [Variable("_b", latex_format = r"{_{-}b}"), Variable("_a", latex_format = r"{_{-}a}")]
expr = NamedExprs(("element", IndexedVar(A, sub_expr1)), ("targets", IndexedVar(R, sub_expr1)))

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\{ \begin{array}{l}
{\rm element}: A_{{_{-}b}, {_{-}a}}\\
{\rm targets}: R_{{_{-}b}, {_{-}a}}\\
\end{array} \right\}

stored_expr.style_options()

no style options

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	NamedExprs	element: 1 targets: 2
1	IndexedVar	variable: 3 indices: 5
2	IndexedVar	variable: 4 indices: 5
3	Variable
4	Variable
5	ExprTuple	6, 7
6	Variable
7	Variable