Expression of type ExprTuple

from the theory of proveit.logic.equality

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, ExprTuple, Lambda, a, b, c, d
from proveit.logic import And, Equals

# build up the expression from sub-expressions
expr = ExprTuple(Lambda([a, b, c, d], Conditional(Equals(a, d), And(Equals(a, b), Equals(b, c), Equals(c, d)))))

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, c, d\right) \mapsto \left\{a = d \textrm{ if } a = b ,  b = c ,  c = d\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: 2 body: 3
2	ExprTuple	16, 17, 18, 19
3	Conditional	value: 4 condition: 5
4	Operation	operator: 14 operands: 6
5	Operation	operator: 7 operands: 8
6	ExprTuple	16, 19
7	Literal
8	ExprTuple	9, 10, 11
9	Operation	operator: 14 operands: 12
10	Operation	operator: 14 operands: 13
11	Operation	operator: 14 operands: 15
12	ExprTuple	16, 17
13	ExprTuple	17, 18
14	Literal
15	ExprTuple	18, 19
16	Variable
17	Variable
18	Variable
19	Variable