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Expression of type Conditional

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 Conditional, Function, V, s
from proveit.core_expr_types import Q__b_1_to_j, a_1_to_i, b_1_to_j, c_1_to_k, f__b_1_to_j
from proveit.linear_algebra import ScalarMult, TensorProd
from proveit.logic import InSet
In [2]:
# build up the expression from sub-expressions
expr = Conditional(InSet(TensorProd(a_1_to_i, ScalarMult(Function(s, [b_1_to_j]), f__b_1_to_j), c_1_to_k), V), Q__b_1_to_j)
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_{1} {\otimes}  a_{2} {\otimes}  \ldots {\otimes}  a_{i} {\otimes} \left(s\left(b_{1}, b_{2}, \ldots, b_{j}\right) \cdot f\left(b_{1}, b_{2}, \ldots, b_{j}\right)\right){\otimes} c_{1} {\otimes}  c_{2} {\otimes}  \ldots {\otimes}  c_{k}\right) \in V \textrm{ if } Q\left(b_{1}, b_{2}, \ldots, b_{j}\right)\right..
In [5]:
stored_expr.style_options()
namedescriptiondefaultcurrent valuerelated methods
condition_delimiter'comma' or 'and'commacomma('with_comma_delimiter', 'with_conjunction_delimiter')
In [6]:
# display the expression information
stored_expr.expr_info()
 core typesub-expressionsexpression
0Conditionalvalue: 1
condition: 2
1Operationoperator: 3
operands: 4
2Operationoperator: 5
operands: 26
3Literal
4ExprTuple6, 7
5Variable
6Operationoperator: 8
operands: 9
7Variable
8Literal
9ExprTuple10, 11, 12
10ExprRangelambda_map: 13
start_index: 30
end_index: 14
11Operationoperator: 15
operands: 16
12ExprRangelambda_map: 17
start_index: 30
end_index: 18
13Lambdaparameter: 35
body: 19
14Variable
15Literal
16ExprTuple20, 21
17Lambdaparameter: 35
body: 22
18Variable
19IndexedVarvariable: 23
index: 35
20Operationoperator: 24
operands: 26
21Operationoperator: 25
operands: 26
22IndexedVarvariable: 27
index: 35
23Variable
24Variable
25Variable
26ExprTuple28
27Variable
28ExprRangelambda_map: 29
start_index: 30
end_index: 31
29Lambdaparameter: 35
body: 32
30Literal
31Variable
32IndexedVarvariable: 33
index: 35
33Variable
34ExprTuple35
35Variable