Description: A member of a finite set of sequential integer is greater than or equal to the lower bound. (Contributed by NM, 6-Sep-2005) (Revised by Mario Carneiro, 28-Apr-2015)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | elfzle1 | |- ( K e. ( M ... N ) -> M <_ K ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfzuz | |- ( K e. ( M ... N ) -> K e. ( ZZ>= ` M ) ) |
|
| 2 | eluzle | |- ( K e. ( ZZ>= ` M ) -> M <_ K ) |
|
| 3 | 1 2 | syl | |- ( K e. ( M ... N ) -> M <_ K ) |