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Expression of type Forall

from the theory of proveit.linear_algebra.inner_products

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 H, K, x, y, z
from proveit.linear_algebra import InnerProd, InnerProdSpaces, VecAdd
from proveit.logic import Equals, Forall
In [2]:
# build up the expression from sub-expressions
expr = Forall(instance_param_or_params = [H], instance_expr = Forall(instance_param_or_params = [x, y, z], instance_expr = Equals(InnerProd(x, VecAdd(y, z)), VecAdd(InnerProd(x, y), InnerProd(x, z))), domain = H), domain = InnerProdSpaces(K))
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_{H \underset{{\scriptscriptstyle c}}{\in} \textrm{InnerProdSpaces}\left(K\right)}~\left[\forall_{x, y, z \in H}~\left(\left \langle x, y + z\right \rangle = \left(\left \langle x, y\right \rangle + \left \langle x, z\right \rangle\right)\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: 38
body: 4
3ExprTuple38
4Conditionalvalue: 5
condition: 6
5Operationoperator: 7
operand: 11
6Operationoperator: 9
operands: 10
7Literal
8ExprTuple11
9Literal
10ExprTuple38, 12
11Lambdaparameters: 13
body: 14
12Operationoperator: 15
operand: 19
13ExprTuple45, 44, 46
14Conditionalvalue: 17
condition: 18
15Literal
16ExprTuple19
17Operationoperator: 20
operands: 21
18Operationoperator: 22
operands: 23
19Variable
20Literal
21ExprTuple24, 25
22Literal
23ExprTuple26, 27, 28
24Operationoperator: 42
operands: 29
25Operationoperator: 39
operands: 30
26Operationoperator: 33
operands: 31
27Operationoperator: 33
operands: 32
28Operationoperator: 33
operands: 34
29ExprTuple45, 35
30ExprTuple36, 37
31ExprTuple45, 38
32ExprTuple44, 38
33Literal
34ExprTuple46, 38
35Operationoperator: 39
operands: 40
36Operationoperator: 42
operands: 41
37Operationoperator: 42
operands: 43
38Variable
39Literal
40ExprTuple44, 46
41ExprTuple45, 44
42Literal
43ExprTuple45, 46
44Variable
45Variable
46Variable