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Description: A finite set of sequential integers is a subset of an upper set of integers. (Contributed by NM, 28-Oct-2005)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | fzssuz |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfzuz | ||
| 2 | 1 | ssriv |