Expression of type Conditional

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
from proveit.core_expr_types import P__x_1_to_m_y_1_to_n, R__x_1_to_m_y_1_to_n

# build up the expression from sub-expressions
expr = Conditional(P__x_1_to_m_y_1_to_n, R__x_1_to_m_y_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\{P\left(x_{1}, x_{2}, \ldots, x_{m},y_{1}, y_{2}, \ldots, y_{n}\right) \textrm{ if } R\left(x_{1}, x_{2}, \ldots, x_{m},y_{1}, y_{2}, \ldots, y_{n}\right)\right..

stored_expr.style_options()

name	description	default	current value	related methods
condition_delimiter	'comma' or 'and'	comma	comma	('with_comma_delimiter', 'with_conjunction_delimiter')

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	Conditional	value: 1 condition: 2
1	Operation	operator: 3 operands: 5
2	Operation	operator: 4 operands: 5
3	Variable
4	Variable
5	ExprTuple	6, 7
6	ExprRange	lambda_map: 8 start_index: 11 end_index: 9
7	ExprRange	lambda_map: 10 start_index: 11 end_index: 12
8	Lambda	parameter: 18 body: 13
9	Variable
10	Lambda	parameter: 18 body: 14
11	Literal
12	Variable
13	IndexedVar	variable: 15 index: 18
14	IndexedVar	variable: 16 index: 18
15	Variable
16	Variable
17	ExprTuple	18
18	Variable