Expression of type ExprTuple

from the theory of proveit.logic.equality

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 Conditional, ExprTuple, Lambda, P, Px, x
from proveit.logic import And, Not, PofFalse

# build up the expression from sub-expressions
expr = ExprTuple(Lambda([P, x], Conditional(PofFalse, And(Px, Not(x)))))

expr:

# 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

# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())

\left(\left(P, x\right) \mapsto \left\{P\left(\bot\right) \textrm{ if } P\left(x\right) ,  \lnot x\right..\right)

stored_expr.style_options()

no style options

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	ExprTuple	1
1	Lambda	parameters: 2 body: 3
2	ExprTuple	12, 15
3	Conditional	value: 4 condition: 5
4	Operation	operator: 12 operand: 9
5	Operation	operator: 7 operands: 8
6	ExprTuple	9
7	Literal
8	ExprTuple	10, 11
9	Literal
10	Operation	operator: 12 operand: 15
11	Operation	operator: 13 operand: 15
12	Variable
13	Literal
14	ExprTuple	15
15	Variable