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Expression of type ExprTuple

from the theory of proveit.numbers.division

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, x, y, z
from proveit.logic import And, Equals, InSet, NotEquals
from proveit.numbers import Complex, Mult, frac, zero
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(Lambda([x, y, z], Conditional(Equals(Mult(x, frac(y, z)), frac(Mult(x, y), z)), And(InSet(x, Complex), InSet(y, Complex), InSet(z, Complex), NotEquals(z, 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(x, y, z\right) \mapsto \left\{\left(x \cdot \frac{y}{z}\right) = \frac{x \cdot y}{z} \textrm{ if } x \in \mathbb{C} ,  y \in \mathbb{C} ,  z \in \mathbb{C} ,  z \neq 0\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
2ExprTuple33, 34, 32
3Conditionalvalue: 4
condition: 5
4Operationoperator: 6
operands: 7
5Operationoperator: 8
operands: 9
6Literal
7ExprTuple10, 11
8Literal
9ExprTuple12, 13, 14, 15
10Operationoperator: 30
operands: 16
11Operationoperator: 28
operands: 17
12Operationoperator: 20
operands: 18
13Operationoperator: 20
operands: 19
14Operationoperator: 20
operands: 21
15Operationoperator: 22
operands: 23
16ExprTuple33, 24
17ExprTuple25, 32
18ExprTuple33, 26
19ExprTuple34, 26
20Literal
21ExprTuple32, 26
22Literal
23ExprTuple32, 27
24Operationoperator: 28
operands: 29
25Operationoperator: 30
operands: 31
26Literal
27Literal
28Literal
29ExprTuple34, 32
30Literal
31ExprTuple33, 34
32Variable
33Variable
34Variable