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Expression of type Lambda

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, Lambda, a, b
from proveit.logic import And, Equals, InSet, NotEquals
from proveit.numbers import Add, Complex, Exp, Mult, Neg, one, zero
In [2]:
# build up the expression from sub-expressions
expr = Lambda([a, b], Conditional(Equals(Mult(a, Exp(a, b)), Exp(a, Add(one, b))), And(InSet(a, Complex), InSet(b, Complex), NotEquals(b, zero), NotEquals(b, Neg(one)))))
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\right) \mapsto \left\{\left(a \cdot a^{b}\right) = a^{1 + b} \textrm{ if } a \in \mathbb{C} ,  b \in \mathbb{C} ,  b \neq 0 ,  b \neq \left(-1\right)\right..
In [5]:
stored_expr.style_options()
no style options
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0Lambdaparameters: 29
body: 1
1Conditionalvalue: 2
condition: 3
2Operationoperator: 4
operands: 5
3Operationoperator: 6
operands: 7
4Literal
5ExprTuple8, 9
6Literal
7ExprTuple10, 11, 12, 13
8Operationoperator: 14
operands: 15
9Operationoperator: 28
operands: 16
10Operationoperator: 18
operands: 17
11Operationoperator: 18
operands: 19
12Operationoperator: 21
operands: 20
13Operationoperator: 21
operands: 22
14Literal
15ExprTuple34, 23
16ExprTuple34, 24
17ExprTuple34, 25
18Literal
19ExprTuple35, 25
20ExprTuple35, 26
21Literal
22ExprTuple35, 27
23Operationoperator: 28
operands: 29
24Operationoperator: 30
operands: 31
25Literal
26Literal
27Operationoperator: 32
operand: 36
28Literal
29ExprTuple34, 35
30Literal
31ExprTuple36, 35
32Literal
33ExprTuple36
34Variable
35Variable
36Literal