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| Mirrors > Home > ILE Home > Th. List > prarloclemup | Unicode version | ||
| Description: Contracting the upper side of an interval which straddles a Dedekind cut. Lemma for prarloc 7570. (Contributed by Jim Kingdon, 10-Nov-2019.) |
| Ref | Expression |
|---|---|
| prarloclemup |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpllr 534 |
. . 3
| |
| 2 | simprl 529 |
. . 3
| |
| 3 | simplr 528 |
. . 3
| |
| 4 | rspe 2546 |
. . 3
| |
| 5 | 1, 2, 3, 4 | syl12anc 1247 |
. 2
|
| 6 | 5 | exp31 364 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-4 1524 |
| This theorem depends on definitions: df-bi 117 df-rex 2481 |
| This theorem is referenced by: prarloclem3step 7563 |
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