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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, U, alpha, n
from proveit.linear_algebra import Norm
from proveit.logic import And, CartExp, Equals, InSet
from proveit.numbers import Complex
from proveit.physics.quantum import Qmult, var_ket_psi
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(Lambda(var_ket_psi, Conditional(Equals(Norm(Qmult(U, var_ket_psi)), alpha), And(InSet(var_ket_psi, CartExp(Complex, n)), Equals(Norm(var_ket_psi), alpha)))))
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(\lvert \psi \rangle \mapsto \left\{\left \|U \thinspace \lvert \psi \rangle\right \| = \alpha \textrm{ if } \lvert \psi \rangle \in \mathbb{C}^{n} ,  \left \|\lvert \psi \rangle\right \| = \alpha\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: 29
body: 2
2Conditionalvalue: 3
condition: 4
3Operationoperator: 14
operands: 5
4Operationoperator: 6
operands: 7
5ExprTuple8, 19
6Literal
7ExprTuple9, 10
8Operationoperator: 24
operand: 16
9Operationoperator: 12
operands: 13
10Operationoperator: 14
operands: 15
11ExprTuple16
12Literal
13ExprTuple29, 17
14Literal
15ExprTuple18, 19
16Operationoperator: 20
operands: 21
17Operationoperator: 22
operands: 23
18Operationoperator: 24
operand: 29
19Variable
20Literal
21ExprTuple26, 29
22Literal
23ExprTuple27, 28
24Literal
25ExprTuple29
26Variable
27Literal
28Variable
29Variable