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Expression of type Implies

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 ExprRange, Function, IndexedVar, Q, Variable, c, f, j, m, n
from proveit.linear_algebra import MatrixSpace, VecSum
from proveit.logic import Forall, Implies, InSet
from proveit.numbers import Complex, one
In [2]:
# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
sub_expr2 = MatrixSpace(field = Complex, rows = n, columns = m)
sub_expr3 = [ExprRange(sub_expr1, IndexedVar(c, sub_expr1), one, j)]
sub_expr4 = Function(f, sub_expr3)
sub_expr5 = Function(Q, sub_expr3)
expr = Implies(Forall(instance_param_or_params = sub_expr3, instance_expr = InSet(sub_expr4, sub_expr2), condition = sub_expr5), InSet(VecSum(index_or_indices = sub_expr3, summand = sub_expr4, condition = sub_expr5), sub_expr2)).with_wrapping_at(2)
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())
\begin{array}{c} \begin{array}{l} \left[\forall_{c_{1}, c_{2}, \ldots, c_{j}~|~Q\left(c_{1}, c_{2}, \ldots, c_{j}\right)}~\left(f\left(c_{1}, c_{2}, \ldots, c_{j}\right) \in \mathbb{C}^{n \times m}\right)\right] \Rightarrow  \\ \left(\left[\sum_{c_{1}, c_{2}, \ldots, c_{j}~|~Q\left(c_{1}, c_{2}, \ldots, c_{j}\right)}~f\left(c_{1}, c_{2}, \ldots, c_{j}\right)\right] \in \mathbb{C}^{n \times m}\right) \end{array} \end{array}
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
operation'infix' or 'function' style formattinginfixinfix
wrap_positionsposition(s) at which wrapping is to occur; '2 n - 1' is after the nth operand, '2 n' is after the nth operation.()(2)('with_wrapping_at', 'with_wrap_before_operator', 'with_wrap_after_operator', 'without_wrapping', 'wrap_positions')
justificationif any wrap positions are set, justify to the 'left', 'center', or 'right'centercenter('with_justification',)
directionDirection of the relation (normal or reversed)normalnormal('with_direction_reversed', 'is_reversed')
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0Operationoperator: 1
operands: 2
1Literal
2ExprTuple3, 4
3Operationoperator: 5
operand: 8
4Operationoperator: 15
operands: 7
5Literal
6ExprTuple8
7ExprTuple9, 18
8Lambdaparameters: 25
body: 10
9Operationoperator: 11
operand: 14
10Conditionalvalue: 13
condition: 20
11Literal
12ExprTuple14
13Operationoperator: 15
operands: 16
14Lambdaparameters: 25
body: 17
15Literal
16ExprTuple19, 18
17Conditionalvalue: 19
condition: 20
18Operationoperator: 21
operands: 22
19Operationoperator: 23
operands: 25
20Operationoperator: 24
operands: 25
21Literal
22NamedExprsfield: 26
rows: 27
columns: 28
23Variable
24Variable
25ExprTuple29
26Literal
27Variable
28Variable
29ExprRangelambda_map: 30
start_index: 31
end_index: 32
30Lambdaparameter: 36
body: 33
31Literal
32Variable
33IndexedVarvariable: 34
index: 36
34Variable
35ExprTuple36
36Variable