Expression of type And

from the theory of proveit.numbers.summation

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 S, a, b
from proveit.logic import And, InSet, SubsetEq
from proveit.numbers import Integer, IntervalCC, LessEq, one, subtract

# build up the expression from sub-expressions
expr = And(InSet(a, Integer), InSet(b, Integer), LessEq(a, b), SubsetEq(IntervalCC(subtract(a, one), b), S))

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(a \in \mathbb{Z}\right) \land \left(b \in \mathbb{Z}\right) \land \left(a \leq b\right) \land \left(\left[a - 1,b\right] \subseteq S\right)

stored_expr.style_options()

name	description	default	current value	related methods
operation	'infix' or 'function' style formatting	infix	infix
wrap_positions	position(s) at which wrapping is to occur; '2 n - 1' is after the nth operand, '2 n' is after the nth operation.	()	()	('with_wrapping_at', 'with_wrap_before_operator', 'with_wrap_after_operator', 'without_wrapping', 'wrap_positions')
justification	if any wrap positions are set, justify to the 'left', 'center', or 'right'	center	center	('with_justification',)

# display the expression information
stored_expr.expr_info()

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