Expression of type ExprTuple

from the theory of proveit.logic.booleans.quantification

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
from proveit.core_expr_types import P__x_1_to_n, Q__x_1_to_n, R__x_1_to_n, x_1_to_n
from proveit.logic import Implies

# build up the expression from sub-expressions
expr = ExprTuple(Lambda([x_1_to_n], Conditional(Implies(P__x_1_to_n, R__x_1_to_n), Q__x_1_to_n)))

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(x_{1}, x_{2}, \ldots, x_{n}\right) \mapsto \left\{P\left(x_{1}, x_{2}, \ldots, x_{n}\right) \Rightarrow R\left(x_{1}, x_{2}, \ldots, x_{n}\right) \textrm{ if } Q\left(x_{1}, x_{2}, \ldots, x_{n}\right)\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: 12 body: 2
2	Conditional	value: 3 condition: 4
3	Operation	operator: 5 operands: 6
4	Operation	operator: 7 operands: 12
5	Literal
6	ExprTuple	8, 9
7	Variable
8	Operation	operator: 10 operands: 12
9	Operation	operator: 11 operands: 12
10	Variable
11	Variable
12	ExprTuple	13
13	ExprRange	lambda_map: 14 start_index: 15 end_index: 16
14	Lambda	parameter: 20 body: 17
15	Literal
16	Variable
17	IndexedVar	variable: 18 index: 20
18	Variable
19	ExprTuple	20
20	Variable