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Expression of type Forall

from the theory of proveit.logic.booleans.disjunction

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 A, B, C
from proveit.logic import Boolean, Forall, Implies, Or
In [2]:
# build up the expression from sub-expressions
expr = Forall(instance_param_or_params = [A, B, C], instance_expr = C, domain = Boolean, conditions = [Or(A, B), Implies(A, C), Implies(B, C)])
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, B, C \in \mathbb{B}~|~A \lor B, A \Rightarrow C, B \Rightarrow C}~C
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: 4
body: 5
4ExprTuple25, 26, 27
5Conditionalvalue: 27
condition: 6
6Operationoperator: 7
operands: 8
7Literal
8ExprTuple9, 10, 11, 12, 13, 14
9Operationoperator: 17
operands: 15
10Operationoperator: 17
operands: 16
11Operationoperator: 17
operands: 18
12Operationoperator: 19
operands: 20
13Operationoperator: 22
operands: 21
14Operationoperator: 22
operands: 23
15ExprTuple25, 24
16ExprTuple26, 24
17Literal
18ExprTuple27, 24
19Literal
20ExprTuple25, 26
21ExprTuple25, 27
22Literal
23ExprTuple26, 27
24Literal
25Variable
26Variable
27Variable