Expression of type ExprTuple

from the theory of proveit.logic.sets.functions.bijections

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 A, C, Conditional, ExprTuple, Function, Lambda, fx, g, x
from proveit.logic import Bijections, InSet

# build up the expression from sub-expressions
expr = ExprTuple(Lambda(x, Conditional(Function(g, [fx]), InSet(x, A))), Bijections(A, C))

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(x \mapsto \left\{g\left(f\left(x\right)\right) \textrm{ if } x \in A\right.., \left[A \xrightarrow[\text{onto}]{\text{1-to-1}} C\right]\right)

stored_expr.style_options()

name	description	default	current value	related methods
wrap_positions	position(s) at which wrapping is to occur; 'n' is after the nth comma.	()	()	('with_wrapping_at',)
justification	if any wrap positions are set, justify to the 'left', 'center', or 'right'	left	left	('with_justification',)

# display the expression information
stored_expr.expr_info()

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