logo

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, gamma, i, x, y
from proveit.linear_algebra import ScalarMult, TensorProd, VecSum
from proveit.numbers import Interval, four, two
In [2]:
# build up the expression from sub-expressions
sub_expr1 = [i]
sub_expr2 = Interval(two, four)
expr = ExprTuple(VecSum(index_or_indices = sub_expr1, summand = ScalarMult(gamma, ScalarMult(i, TensorProd(x, y))), domain = sub_expr2), ScalarMult(gamma, TensorProd(x, VecSum(index_or_indices = sub_expr1, summand = ScalarMult(i, y), domain = sub_expr2))))
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(\sum_{i=2}^{4} \left(\gamma \cdot \left(i \cdot \left(x {\otimes} y\right)\right)\right), \gamma \cdot \left(x {\otimes} \left(\sum_{i=2}^{4} \left(i \cdot y\right)\right)\right)\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: 12
operand: 5
2Operationoperator: 25
operands: 4
3ExprTuple5
4ExprTuple14, 6
5Lambdaparameter: 31
body: 7
6Operationoperator: 23
operands: 8
7Conditionalvalue: 9
condition: 22
8ExprTuple29, 10
9Operationoperator: 25
operands: 11
10Operationoperator: 12
operand: 16
11ExprTuple14, 15
12Literal
13ExprTuple16
14Variable
15Operationoperator: 25
operands: 17
16Lambdaparameter: 31
body: 19
17ExprTuple31, 20
18ExprTuple31
19Conditionalvalue: 21
condition: 22
20Operationoperator: 23
operands: 24
21Operationoperator: 25
operands: 26
22Operationoperator: 27
operands: 28
23Literal
24ExprTuple29, 30
25Literal
26ExprTuple31, 30
27Literal
28ExprTuple31, 32
29Variable
30Variable
31Variable
32Operationoperator: 33
operands: 34
33Literal
34ExprTuple35, 36
35Literal
36Literal