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Expression of type ExprTuple

from the theory of proveit.linear_algebra.tensors

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 ExprTuple, i, x, y
from proveit.linear_algebra import TensorProd, VecSum
from proveit.logic import CartExp, Equals, Forall, InSet
from proveit.numbers import Interval, Real, four, three, two
In [2]:
# build up the expression from sub-expressions
sub_expr1 = [i]
sub_expr2 = TensorProd(x, y)
sub_expr3 = CartExp(Real, three)
sub_expr4 = Interval(two, four)
expr = ExprTuple(Forall(instance_param_or_params = sub_expr1, instance_expr = InSet(sub_expr2, TensorProd(sub_expr3, sub_expr3)), domain = sub_expr4), Equals(TensorProd(x, VecSum(index_or_indices = sub_expr1, summand = y, domain = sub_expr4)), VecSum(index_or_indices = sub_expr1, summand = sub_expr2, domain = sub_expr4)).with_wrapping_at(1))
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(\forall_{i \in \{2~\ldotp \ldotp~4\}}~\left(\left(x {\otimes} y\right) \in \left(\mathbb{R}^{3} {\otimes} \mathbb{R}^{3}\right)\right), \begin{array}{c} \begin{array}{l} \left(x {\otimes} \left(\sum_{i=2}^{4} y\right)\right) \\  = \left(\sum_{i=2}^{4} \left(x {\otimes} y\right)\right) \end{array} \end{array}\right)
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
wrap_positionsposition(s) at which wrapping is to occur; 'n' is after the nth comma.()()('with_wrapping_at',)
justificationif any wrap positions are set, justify to the 'left', 'center', or 'right'leftleft('with_justification',)
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0ExprTuple1, 2
1Operationoperator: 3
operand: 7
2Operationoperator: 5
operands: 6
3Literal
4ExprTuple7
5Literal
6ExprTuple8, 9
7Lambdaparameter: 38
body: 10
8Operationoperator: 26
operands: 11
9Operationoperator: 17
operand: 15
10Conditionalvalue: 13
condition: 29
11ExprTuple30, 14
12ExprTuple15
13Operationoperator: 34
operands: 16
14Operationoperator: 17
operand: 21
15Lambdaparameter: 38
body: 19
16ExprTuple22, 20
17Literal
18ExprTuple21
19Conditionalvalue: 22
condition: 29
20Operationoperator: 26
operands: 23
21Lambdaparameter: 38
body: 25
22Operationoperator: 26
operands: 27
23ExprTuple28, 28
24ExprTuple38
25Conditionalvalue: 31
condition: 29
26Literal
27ExprTuple30, 31
28Operationoperator: 32
operands: 33
29Operationoperator: 34
operands: 35
30Variable
31Variable
32Literal
33ExprTuple36, 37
34Literal
35ExprTuple38, 39
36Literal
37Literal
38Variable
39Operationoperator: 40
operands: 41
40Literal
41ExprTuple42, 43
42Literal
43Literal