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Expression of type ExprTuple

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, ExprTuple, Lambda, a, b, c, d
from proveit.logic import And, Equals, InSet, NotEquals
from proveit.numbers import Add, Exp, Integer, Mult, Real, zero
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(Lambda([a, b, c, d], Conditional(Equals(Exp(a, b), Mult(Exp(a, c), Exp(a, d))), And(InSet(a, Real), InSet(b, Integer), InSet(c, Integer), InSet(d, Integer), NotEquals(a, zero), 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(\left(a, b, c, d\right) \mapsto \left\{a^{b} = \left(a^{c} \cdot a^{d}\right) \textrm{ if } a \in \mathbb{R} ,  b \in \mathbb{Z} ,  c \in \mathbb{Z} ,  d \in \mathbb{Z} ,  a \neq 0 ,  b = \left(c + d\right)\right..\right)
In [5]:
stored_expr.style_options()
no style options
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0ExprTuple1
1Lambdaparameters: 2
body: 3
2ExprTuple41, 34, 42, 43
3Conditionalvalue: 4
condition: 5
4Operationoperator: 27
operands: 6
5Operationoperator: 7
operands: 8
6ExprTuple9, 10
7Literal
8ExprTuple11, 12, 13, 14, 15, 16
9Operationoperator: 37
operands: 17
10Operationoperator: 18
operands: 19
11Operationoperator: 23
operands: 20
12Operationoperator: 23
operands: 21
13Operationoperator: 23
operands: 22
14Operationoperator: 23
operands: 24
15Operationoperator: 25
operands: 26
16Operationoperator: 27
operands: 28
17ExprTuple41, 34
18Literal
19ExprTuple29, 30
20ExprTuple41, 31
21ExprTuple34, 32
22ExprTuple42, 32
23Literal
24ExprTuple43, 32
25Literal
26ExprTuple41, 33
27Literal
28ExprTuple34, 35
29Operationoperator: 37
operands: 36
30Operationoperator: 37
operands: 38
31Literal
32Literal
33Literal
34Variable
35Operationoperator: 39
operands: 40
36ExprTuple41, 42
37Literal
38ExprTuple41, 43
39Literal
40ExprTuple42, 43
41Variable
42Variable
43Variable