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Expression of type Forall

from the theory of proveit.linear_algebra.tensors

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 V
from proveit.core_expr_types import Q__b_1_to_j, a_1_to_i, b_1_to_j, c_1_to_k, f__b_1_to_j
from proveit.linear_algebra import TensorProd
from proveit.logic import Forall, InSet
In [2]:
# build up the expression from sub-expressions
expr = Forall(instance_param_or_params = [b_1_to_j], instance_expr = InSet(TensorProd(a_1_to_i, f__b_1_to_j, c_1_to_k), V), condition = Q__b_1_to_j)
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_{b_{1}, b_{2}, \ldots, b_{j}~|~Q\left(b_{1}, b_{2}, \ldots, b_{j}\right)}~\left(\left(a_{1} {\otimes}  a_{2} {\otimes}  \ldots {\otimes}  a_{i} {\otimes} f\left(b_{1}, b_{2}, \ldots, b_{j}\right){\otimes} c_{1} {\otimes}  c_{2} {\otimes}  \ldots {\otimes}  c_{k}\right) \in V\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: 1
operand: 3
1Literal
2ExprTuple3
3Lambdaparameters: 20
body: 4
4Conditionalvalue: 5
condition: 6
5Operationoperator: 7
operands: 8
6Operationoperator: 9
operands: 20
7Literal
8ExprTuple10, 11
9Variable
10Operationoperator: 12
operands: 13
11Variable
12Literal
13ExprTuple14, 15, 16
14ExprRangelambda_map: 17
start_index: 28
end_index: 18
15Operationoperator: 19
operands: 20
16ExprRangelambda_map: 21
start_index: 28
end_index: 22
17Lambdaparameter: 34
body: 23
18Variable
19Variable
20ExprTuple24
21Lambdaparameter: 34
body: 25
22Variable
23IndexedVarvariable: 26
index: 34
24ExprRangelambda_map: 27
start_index: 28
end_index: 29
25IndexedVarvariable: 30
index: 34
26Variable
27Lambdaparameter: 34
body: 31
28Literal
29Variable
30Variable
31IndexedVarvariable: 32
index: 34
32Variable
33ExprTuple34
34Variable