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Expression of type Conditional

from the theory of proveit.numbers.exponentiation

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, b, n
from proveit.logic import And, Equals, InSet, NotEquals
from proveit.numbers import Complex, Exp, NaturalPos, frac, zero
In [2]:
# build up the expression from sub-expressions
expr = Conditional(Equals(Exp(frac(a, b), n), frac(Exp(a, n), Exp(b, n))), And(InSet(a, Complex), InSet(b, Complex), InSet(n, NaturalPos), NotEquals(b, zero)))
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\{\left(\frac{a}{b}\right)^{n} = \frac{a^{n}}{b^{n}} \textrm{ if } a \in \mathbb{C} ,  b \in \mathbb{C} ,  n \in \mathbb{N}^+ ,  b \neq 0\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: 3
operands: 4
2Operationoperator: 5
operands: 6
3Literal
4ExprTuple7, 8
5Literal
6ExprTuple9, 10, 11, 12
7Operationoperator: 30
operands: 13
8Operationoperator: 27
operands: 14
9Operationoperator: 17
operands: 15
10Operationoperator: 17
operands: 16
11Operationoperator: 17
operands: 18
12Operationoperator: 19
operands: 20
13ExprTuple21, 34
14ExprTuple22, 23
15ExprTuple32, 24
16ExprTuple33, 24
17Literal
18ExprTuple34, 25
19Literal
20ExprTuple33, 26
21Operationoperator: 27
operands: 28
22Operationoperator: 30
operands: 29
23Operationoperator: 30
operands: 31
24Literal
25Literal
26Literal
27Literal
28ExprTuple32, 33
29ExprTuple32, 34
30Literal
31ExprTuple33, 34
32Variable
33Variable
34Variable