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Expression of type Conditional

from the theory of proveit.numbers.divisibility

In [1]:
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, a, k, n
from proveit.logic import And, InSet
from proveit.numbers import Divides, Exp, Integer, NaturalPos
In [2]:
# build up the expression from sub-expressions
expr = Conditional(Divides(k, a), And(InSet(k, Integer), InSet(a, Integer), InSet(n, NaturalPos), Divides(Exp(k, n), Exp(a, n))))
expr:
In [3]:
# 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
In [4]:
# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())
\left\{k \rvert a \textrm{ if } k \in \mathbb{Z} ,  a \in \mathbb{Z} ,  n \in \mathbb{N}^+ ,  k^{n} \rvert a^{n}\right..
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
condition_delimiter'comma' or 'and'commacomma('with_comma_delimiter', 'with_conjunction_delimiter')
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0Conditionalvalue: 1
condition: 2
1Operationoperator: 14
operands: 3
2Operationoperator: 4
operands: 5
3ExprTuple23, 24
4Literal
5ExprTuple6, 7, 8, 9
6Operationoperator: 12
operands: 10
7Operationoperator: 12
operands: 11
8Operationoperator: 12
operands: 13
9Operationoperator: 14
operands: 15
10ExprTuple23, 16
11ExprTuple24, 16
12Literal
13ExprTuple25, 17
14Literal
15ExprTuple18, 19
16Literal
17Literal
18Operationoperator: 21
operands: 20
19Operationoperator: 21
operands: 22
20ExprTuple23, 25
21Literal
22ExprTuple24, 25
23Variable
24Variable
25Variable