Description: An infimum is a set. (Contributed by AV, 3-Sep-2020)
Ref | Expression | ||
---|---|---|---|
Hypothesis | infex.1 | |- R Or A |
|
Assertion | infex | |- inf ( B , A , R ) e. _V |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | infex.1 | |- R Or A |
|
2 | id | |- ( R Or A -> R Or A ) |
|
3 | 2 | infexd | |- ( R Or A -> inf ( B , A , R ) e. _V ) |
4 | 1 3 | ax-mp | |- inf ( B , A , R ) e. _V |