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Expression of type NamedExprs

from the theory of proveit.physics.quantum.circuits

In [1]:
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
In [2]:
# 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:
In [3]:
# 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
In [4]:
# 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\}

In [5]:
stored_expr.style_options()
no style options
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0NamedExprselement: 1
targets: 2
1IndexedVarvariable: 3
indices: 5
2IndexedVarvariable: 4
indices: 5
3Variable
4Variable
5ExprTuple6, 7
6Variable
7Variable