logo

Expression of type Forall

from the theory of proveit.physics.quantum

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 alpha, x
from proveit.linear_algebra import ScalarMult
from proveit.logic import Forall, InSet
from proveit.numbers import Complex
from proveit.physics.quantum import QubitSpace
In [2]:
# build up the expression from sub-expressions
expr = Forall(instance_param_or_params = [x], instance_expr = Forall(instance_param_or_params = [alpha], instance_expr = InSet(ScalarMult(alpha, x), QubitSpace), domain = Complex), domain = QubitSpace)
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())
\forall_{x \in \mathbb{C}^{2}}~\left[\forall_{\alpha \in \mathbb{C}}~\left(\left(\alpha \cdot x\right) \in \mathbb{C}^{2}\right)\right]
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
with_wrappingIf 'True', wrap the Expression after the parametersNoneNone/False('with_wrapping',)
condition_wrappingWrap 'before' or 'after' the condition (or None).NoneNone/False('with_wrap_after_condition', 'with_wrap_before_condition')
wrap_paramsIf 'True', wraps every two parameters AND wraps the Expression after the parametersNoneNone/False('with_params',)
justificationjustify to the 'left', 'center', or 'right' in the array cellscentercenter('with_justification',)
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0Operationoperator: 7
operand: 2
1ExprTuple2
2Lambdaparameter: 25
body: 4
3ExprTuple25
4Conditionalvalue: 5
condition: 6
5Operationoperator: 7
operand: 10
6Operationoperator: 16
operands: 9
7Literal
8ExprTuple10
9ExprTuple25, 19
10Lambdaparameter: 24
body: 12
11ExprTuple24
12Conditionalvalue: 13
condition: 14
13Operationoperator: 16
operands: 15
14Operationoperator: 16
operands: 17
15ExprTuple18, 19
16Literal
17ExprTuple24, 26
18Operationoperator: 20
operands: 21
19Operationoperator: 22
operands: 23
20Literal
21ExprTuple24, 25
22Literal
23ExprTuple26, 27
24Variable
25Variable
26Literal
27Literal