logo

Expression of type ExprTuple

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 ExprTuple, IndexedVar, U, Variable, m
from proveit.linear_algebra import Unitary
from proveit.numbers import Exp, two
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(IndexedVar(U, Variable("_a", latex_format = r"{_{-}a}")), Unitary(Exp(two, m)))
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(U_{{_{-}a}}, \textrm{U}\left(2^{m}\right)\right)
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
wrap_positionsposition(s) at which wrapping is to occur; 'n' is after the nth comma.()()('with_wrapping_at',)
justificationif any wrap positions are set, justify to the 'left', 'center', or 'right'leftleft('with_justification',)
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0ExprTuple1, 2
1IndexedVarvariable: 3
index: 7
2Operationoperator: 5
operand: 8
3Variable
4ExprTuple7
5Literal
6ExprTuple8
7Variable
8Operationoperator: 9
operands: 10
9Literal
10ExprTuple11, 12
11Literal
12Variable