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Expression of type ExprTuple

from the theory of proveit.numbers.modular

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
from proveit.logic import And, Equals, InSet
from proveit.numbers import ModAbs, Mult, Real
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(Lambda([a, b, c], Conditional(Equals(Mult(a, ModAbs(b, c)), ModAbs(Mult(a, b), Mult(a, c))), And(InSet(a, Real), InSet(b, Real), InSet(c, Real)))))
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\right) \mapsto \left\{\left(a \cdot \left|b\right|_{\textup{mod}\thinspace c}\right) = \left|a \cdot b\right|_{\textup{mod}\thinspace a \cdot c} \textrm{ if } a \in \mathbb{R} ,  b \in \mathbb{R} ,  c \in \mathbb{R}\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
2ExprTuple31, 30, 32
3Conditionalvalue: 4
condition: 5
4Operationoperator: 6
operands: 7
5Operationoperator: 8
operands: 9
6Literal
7ExprTuple10, 11
8Literal
9ExprTuple12, 13, 14
10Operationoperator: 28
operands: 15
11Operationoperator: 25
operands: 16
12Operationoperator: 19
operands: 17
13Operationoperator: 19
operands: 18
14Operationoperator: 19
operands: 20
15ExprTuple31, 21
16ExprTuple22, 23
17ExprTuple31, 24
18ExprTuple30, 24
19Literal
20ExprTuple32, 24
21Operationoperator: 25
operands: 26
22Operationoperator: 28
operands: 27
23Operationoperator: 28
operands: 29
24Literal
25Literal
26ExprTuple30, 32
27ExprTuple31, 30
28Literal
29ExprTuple31, 32
30Variable
31Variable
32Variable