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Mathlib
.
Data
.
Finite
.
Sum
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Imports
Init
Mathlib.Data.Fintype.Sum
Imported by
Finite
.
instSum
Finite
.
sum_left
Finite
.
sum_right
Finiteness of sum types
#
source
instance
Finite
.
instSum
{α :
Type
u_1}
{β :
Type
u_2}
[
Finite
α
]
[
Finite
β
]
:
Finite
(
α
⊕
β
)
Equations
⋯
=
⋯
source
theorem
Finite
.
sum_left
{α :
Type
u_1}
(β :
Type
u_3)
[
Finite
(
α
⊕
β
)
]
:
Finite
α
source
theorem
Finite
.
sum_right
{β :
Type
u_2}
(α :
Type
u_3)
[
Finite
(
α
⊕
β
)
]
:
Finite
β