Expression of type Conditional

from the theory of proveit.numbers.rounding

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, n, x
from proveit.logic import Equals, Forall, InSet
from proveit.numbers import Add, Integer, Real, Round

# build up the expression from sub-expressions
expr = Conditional(Forall(instance_param_or_params = [n], instance_expr = Equals(Round(Add(x, n)), Add(Round(x), n)), domain = Integer), InSet(x, Real))

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\{\forall_{n \in \mathbb{Z}}~\left(round\left(x + n\right) = \left(round\left(x\right) + n\right)\right) \textrm{ if } x \in \mathbb{R}\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 operand: 6
2	Operation	operator: 14 operands: 5
3	Literal
4	ExprTuple	6
5	ExprTuple	28, 7
6	Lambda	parameter: 27 body: 9
7	Literal
8	ExprTuple	27
9	Conditional	value: 10 condition: 11
10	Operation	operator: 12 operands: 13
11	Operation	operator: 14 operands: 15
12	Literal
13	ExprTuple	16, 17
14	Literal
15	ExprTuple	27, 18
16	Operation	operator: 25 operand: 21
17	Operation	operator: 23 operands: 20
18	Literal
19	ExprTuple	21
20	ExprTuple	22, 27
21	Operation	operator: 23 operands: 24
22	Operation	operator: 25 operand: 28
23	Literal
24	ExprTuple	28, 27
25	Literal
26	ExprTuple	28
27	Variable
28	Variable