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Expression of type Forall

from the theory of proveit.logic.booleans.conjunction

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 B
from proveit.core_expr_types import A_1_to_m, C_1_to_n
from proveit.logic import And, Forall, Not
In [2]:
# build up the expression from sub-expressions
expr = Forall(instance_param_or_params = [A_1_to_m, B, C_1_to_n], instance_expr = Not(And(A_1_to_m, B, C_1_to_n)), condition = Not(B))
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_{A_{1}, A_{2}, \ldots, A_{m}, B, C_{1}, C_{2}, \ldots, C_{n}~|~\lnot B}~(\lnot \left(A_{1} \land  A_{2} \land  \ldots \land  A_{m} \land B\land C_{1} \land  C_{2} \land  \ldots \land  C_{n}\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: 12
body: 4
4Conditionalvalue: 5
condition: 6
5Operationoperator: 8
operand: 10
6Operationoperator: 8
operand: 14
7ExprTuple10
8Literal
9ExprTuple14
10Operationoperator: 11
operands: 12
11Literal
12ExprTuple13, 14, 15
13ExprRangelambda_map: 16
start_index: 19
end_index: 17
14Variable
15ExprRangelambda_map: 18
start_index: 19
end_index: 20
16Lambdaparameter: 26
body: 21
17Variable
18Lambdaparameter: 26
body: 22
19Literal
20Variable
21IndexedVarvariable: 23
index: 26
22IndexedVarvariable: 24
index: 26
23Variable
24Variable
25ExprTuple26
26Variable