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Expression of type ExprTuple

from the theory of proveit.physics.quantum.algebra

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 Conditional, ExprTuple, Lambda
from proveit.linear_algebra import Hspace, LinMap
from proveit.logic import InSet
from proveit.numbers import Complex
from proveit.physics.quantum import Qmult, bra_varphi, ket_varphi, varphi
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(Lambda(varphi, Conditional(InSet(Qmult(bra_varphi), LinMap(Hspace, Complex)), InSet(ket_varphi, Hspace))))
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(\varphi \mapsto \left\{\left[\langle \varphi \rvert\right] \in \mathcal{L}\left(\mathcal{H}, \mathbb{C}\right) \textrm{ if } \lvert \varphi \rangle \in \mathcal{H}\right..\right)
In [5]:
stored_expr.style_options()
no style options
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0ExprTuple1
1Lambdaparameter: 21
body: 2
2Conditionalvalue: 3
condition: 4
3Operationoperator: 6
operands: 5
4Operationoperator: 6
operands: 7
5ExprTuple8, 9
6Literal
7ExprTuple10, 17
8Operationoperator: 11
operand: 16
9Operationoperator: 13
operands: 14
10Operationoperator: 15
operand: 21
11Literal
12ExprTuple16
13Literal
14ExprTuple17, 18
15Literal
16Operationoperator: 19
operand: 21
17Variable
18Literal
19Literal
20ExprTuple21
21Variable