Expression of type ExprTuple

from the theory of proveit.physics.quantum.algebra

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, i, n
from proveit.core_expr_types import a_i, v_i
from proveit.linear_algebra import ScalarMult
from proveit.logic import InSet
from proveit.numbers import Interval, one
from proveit.physics.quantum import Bra, Ket, Qmult

# build up the expression from sub-expressions
expr = ExprTuple(Lambda(i, Conditional(ScalarMult(a_i, Qmult(Ket(v_i), Bra(v_i))), InSet(i, Interval(one, n)))))

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(i \mapsto \left\{a_{i} \cdot \left(\lvert v_{i} \rangle \thinspace \langle v_{i} \rvert\right) \textrm{ if } i \in \{1~\ldotp \ldotp~n\}\right..\right)

stored_expr.style_options()

no style options

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	ExprTuple	1
1	Lambda	parameter: 27 body: 2
2	Conditional	value: 3 condition: 4
3	Operation	operator: 5 operands: 6
4	Operation	operator: 7 operands: 8
5	Literal
6	ExprTuple	9, 10
7	Literal
8	ExprTuple	27, 11
9	IndexedVar	variable: 12 index: 27
10	Operation	operator: 13 operands: 14
11	Operation	operator: 15 operands: 16
12	Variable
13	Literal
14	ExprTuple	17, 18
15	Literal
16	ExprTuple	19, 20
17	Operation	operator: 21 operand: 24
18	Operation	operator: 22 operand: 24
19	Literal
20	Variable
21	Literal
22	Literal
23	ExprTuple	24
24	IndexedVar	variable: 25 index: 27
25	Variable
26	ExprTuple	27
27	Variable