Expression of type Conditional

from the theory of proveit.trigonometry

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, t
from proveit.logic import Equals, InSet
from proveit.numbers import Abs, Real
from proveit.trigonometry import Sin

# build up the expression from sub-expressions
expr = Conditional(Equals(Abs(Sin(t)), Sin(Abs(t))), InSet(t, 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\{\left|\sin{t}\right| = \sin{\left|t\right|} \textrm{ if } t \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 operands: 4
2	Operation	operator: 5 operands: 6
3	Literal
4	ExprTuple	7, 8
5	Literal
6	ExprTuple	17, 9
7	Operation	operator: 15 operand: 12
8	Operation	operator: 14 operand: 13
9	Literal
10	ExprTuple	12
11	ExprTuple	13
12	Operation	operator: 14 operand: 17
13	Operation	operator: 15 operand: 17
14	Literal
15	Literal
16	ExprTuple	17
17	Variable