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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, c, d
from proveit.logic import And, Equals, InSet
from proveit.numbers import Add, Exp, Mult, Real, RealPos
In [2]:
# build up the expression from sub-expressions
expr = Conditional(Equals(Exp(a, b), Mult(Exp(a, c), Exp(a, d))), And(InSet(a, RealPos), InSet(b, Real), InSet(c, Real), InSet(d, Real), Equals(b, Add(c, d))))
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\{a^{b} = \left(a^{c} \cdot a^{d}\right) \textrm{ if } a \in \mathbb{R}^+ ,  b \in \mathbb{R} ,  c \in \mathbb{R} ,  d \in \mathbb{R} ,  b = \left(c + d\right)\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: 21
operands: 3
2Operationoperator: 4
operands: 5
3ExprTuple6, 7
4Literal
5ExprTuple8, 9, 10, 11, 12
6Operationoperator: 30
operands: 13
7Operationoperator: 14
operands: 15
8Operationoperator: 19
operands: 16
9Operationoperator: 19
operands: 17
10Operationoperator: 19
operands: 18
11Operationoperator: 19
operands: 20
12Operationoperator: 21
operands: 22
13ExprTuple34, 27
14Literal
15ExprTuple23, 24
16ExprTuple34, 25
17ExprTuple27, 26
18ExprTuple35, 26
19Literal
20ExprTuple36, 26
21Literal
22ExprTuple27, 28
23Operationoperator: 30
operands: 29
24Operationoperator: 30
operands: 31
25Literal
26Literal
27Variable
28Operationoperator: 32
operands: 33
29ExprTuple34, 35
30Literal
31ExprTuple34, 36
32Literal
33ExprTuple35, 36
34Variable
35Variable
36Variable