Expression of type Lambda

from the theory of proveit.linear_algebra.linear_maps

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, K, Lambda, V, W
from proveit.linear_algebra import LinMap, VecSpaces
from proveit.logic import And, InClass

# build up the expression from sub-expressions
sub_expr1 = VecSpaces(K)
expr = Lambda([V, W], Conditional(InClass(LinMap(V, W), sub_expr1), And(InClass(V, sub_expr1), InClass(W, sub_expr1))))

expr:

# 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

# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())

\left(V, W\right) \mapsto \left\{\mathcal{L}\left(V, W\right) \underset{{\scriptscriptstyle c}}{\in} \textrm{VecSpaces}\left(K\right) \textrm{ if } V \underset{{\scriptscriptstyle c}}{\in} \textrm{VecSpaces}\left(K\right) ,  W \underset{{\scriptscriptstyle c}}{\in} \textrm{VecSpaces}\left(K\right)\right..

stored_expr.style_options()

no style options

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	Lambda	parameters: 11 body: 1
1	Conditional	value: 2 condition: 3
2	Operation	operator: 13 operands: 4
3	Operation	operator: 5 operands: 6
4	ExprTuple	7, 17
5	Literal
6	ExprTuple	8, 9
7	Operation	operator: 10 operands: 11
8	Operation	operator: 13 operands: 12
9	Operation	operator: 13 operands: 14
10	Literal
11	ExprTuple	15, 16
12	ExprTuple	15, 17
13	Literal
14	ExprTuple	16, 17
15	Variable
16	Variable
17	Operation	operator: 18 operand: 20
18	Literal
19	ExprTuple	20
20	Variable