Expression of type ExprTuple

from the theory of proveit.logic.sets.functions

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, B, ExprTuple, Lambda, f, fx, x
from proveit.logic import Forall, Functions, InSet

# build up the expression from sub-expressions
expr = ExprTuple(Lambda([A, B], Forall(instance_param_or_params = [f], instance_expr = InSet(f, Functions(A, B)), condition = Forall(instance_param_or_params = [x], instance_expr = InSet(fx, B), domain = A))))

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(A, B\right) \mapsto \left[\forall_{f~|~\forall_{x \in A}~\left(f\left(x\right) \in B\right)}~\left(f \in \left[A \rightarrow B\right]\right)\right]\right)

stored_expr.style_options()

no style options

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	ExprTuple	1
1	Lambda	parameters: 15 body: 2
2	Operation	operator: 10 operand: 4
3	ExprTuple	4
4	Lambda	parameter: 25 body: 6
5	ExprTuple	25
6	Conditional	value: 7 condition: 8
7	Operation	operator: 20 operands: 9
8	Operation	operator: 10 operand: 13
9	ExprTuple	25, 12
10	Literal
11	ExprTuple	13
12	Operation	operator: 14 operands: 15
13	Lambda	parameter: 27 body: 16
14	Literal
15	ExprTuple	24, 23
16	Conditional	value: 17 condition: 18
17	Operation	operator: 20 operands: 19
18	Operation	operator: 20 operands: 21
19	ExprTuple	22, 23
20	Literal
21	ExprTuple	27, 24
22	Operation	operator: 25 operand: 27
23	Variable
24	Variable
25	Variable
26	ExprTuple	27
27	Variable