Expression of type Conditional

from the theory of proveit.numbers.number_sets.real_numbers

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, a, b, x
from proveit.logic import And, Equals, Forall, InSet
from proveit.numbers import IntervalCO, Less, LessEq, Real

# build up the expression from sub-expressions
expr = Conditional(Forall(instance_param_or_params = [x], instance_expr = Equals(InSet(x, IntervalCO(a, b)), And(InSet(x, Real), And(LessEq(a, x), Less(x, b)).with_total_ordering_style()))), And(InSet(a, Real), InSet(b, 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_{x}~\left(\left(x \in \left[a,b\right)\right) = \left(\left(x \in \mathbb{R}\right) \land \left(a \leq x < b\right)\right)\right) \textrm{ if } a \in \mathbb{R} ,  b \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: 26 operands: 5
3	Literal
4	ExprTuple	6
5	ExprTuple	7, 8
6	Lambda	parameter: 36 body: 10
7	Operation	operator: 24 operands: 11
8	Operation	operator: 24 operands: 12
9	ExprTuple	36
10	Operation	operator: 13 operands: 14
11	ExprTuple	35, 28
12	ExprTuple	37, 28
13	Literal
14	ExprTuple	15, 16
15	Operation	operator: 24 operands: 17
16	Operation	operator: 26 operands: 18
17	ExprTuple	36, 19
18	ExprTuple	20, 21
19	Operation	operator: 22 operands: 23
20	Operation	operator: 24 operands: 25
21	Operation	operator: 26 operands: 27
22	Literal
23	ExprTuple	35, 37
24	Literal
25	ExprTuple	36, 28
26	Literal
27	ExprTuple	29, 30
28	Literal
29	Operation	operator: 31 operands: 32
30	Operation	operator: 33 operands: 34
31	Literal
32	ExprTuple	35, 36
33	Literal
34	ExprTuple	36, 37
35	Variable
36	Variable
37	Variable