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, beta, i, x, y
from proveit.linear_algebra import ScalarMult, TensorProd, VecSum
from proveit.numbers import Exp, 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 = TensorProd(ScalarMult(beta, x), ScalarMult(beta, y)), domain = sub_expr2), ScalarMult(Exp(beta, two), VecSum(index_or_indices = sub_expr1, summand = TensorProd(x, 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(\left(\beta \cdot x\right) {\otimes} \left(\beta \cdot y\right)\right), \beta^{2} \cdot \left(\sum_{i=2}^{4} \left(x {\otimes} y\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: 11
operand: 5
2Operationoperator: 23
operands: 4
3ExprTuple5
4ExprTuple6, 7
5Lambdaparameter: 32
body: 8
6Operationoperator: 9
operands: 10
7Operationoperator: 11
operand: 14
8Conditionalvalue: 13
condition: 21
9Literal
10ExprTuple29, 36
11Literal
12ExprTuple14
13Operationoperator: 25
operands: 15
14Lambdaparameter: 32
body: 17
15ExprTuple18, 19
16ExprTuple32
17Conditionalvalue: 20
condition: 21
18Operationoperator: 23
operands: 22
19Operationoperator: 23
operands: 24
20Operationoperator: 25
operands: 26
21Operationoperator: 27
operands: 28
22ExprTuple29, 30
23Literal
24ExprTuple29, 31
25Literal
26ExprTuple30, 31
27Literal
28ExprTuple32, 33
29Variable
30Variable
31Variable
32Variable
33Operationoperator: 34
operands: 35
34Literal
35ExprTuple36, 37
36Literal
37Literal