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Expression of type ExprTuple

from the theory of proveit.logic.sets.functions

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 A, B, ExprTuple, f, fx, x
from proveit.logic import Forall, Functions, InSet
In [2]:
# build up the expression from sub-expressions
expr = ExprTuple(InSet(f, Functions(A, B)), Forall(instance_param_or_params = [x], instance_expr = InSet(fx, B), domain = A))
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(f \in \left[A \rightarrow B\right], \forall_{x \in A}~\left(f\left(x\right) \in B\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: 14
operands: 3
2Operationoperator: 4
operand: 7
3ExprTuple19, 6
4Literal
5ExprTuple7
6Operationoperator: 8
operands: 9
7Lambdaparameter: 21
body: 10
8Literal
9ExprTuple18, 17
10Conditionalvalue: 11
condition: 12
11Operationoperator: 14
operands: 13
12Operationoperator: 14
operands: 15
13ExprTuple16, 17
14Literal
15ExprTuple21, 18
16Operationoperator: 19
operand: 21
17Variable
18Variable
19Variable
20ExprTuple21
21Variable