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| Mirrors > Home > ILE Home > Th. List > caucvgsrlemasr | GIF version | ||
| Description: Lemma for caucvgsr 8117. The lower bound is a signed real. (Contributed by Jim Kingdon, 4-Jul-2021.) |
| Ref | Expression |
|---|---|
| caucvgsrlemasr.bnd | ⊢ (𝜑 → ∀𝑚 ∈ N 𝐴 <R (𝐹‘𝑚)) |
| Ref | Expression |
|---|---|
| caucvgsrlemasr | ⊢ (𝜑 → 𝐴 ∈ R) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | caucvgsrlemasr.bnd | . . 3 ⊢ (𝜑 → ∀𝑚 ∈ N 𝐴 <R (𝐹‘𝑚)) | |
| 2 | ltrelsr 8053 | . . . . . 6 ⊢ <R ⊆ (R × R) | |
| 3 | 2 | brel 4802 | . . . . 5 ⊢ (𝐴 <R (𝐹‘𝑚) → (𝐴 ∈ R ∧ (𝐹‘𝑚) ∈ R)) |
| 4 | 3 | simpld 112 | . . . 4 ⊢ (𝐴 <R (𝐹‘𝑚) → 𝐴 ∈ R) |
| 5 | 4 | ralimi 2605 | . . 3 ⊢ (∀𝑚 ∈ N 𝐴 <R (𝐹‘𝑚) → ∀𝑚 ∈ N 𝐴 ∈ R) |
| 6 | 1, 5 | syl 14 | . 2 ⊢ (𝜑 → ∀𝑚 ∈ N 𝐴 ∈ R) |
| 7 | 1pi 7630 | . . 3 ⊢ 1o ∈ N | |
| 8 | elex2 2830 | . . 3 ⊢ (1o ∈ N → ∃𝑥 𝑥 ∈ N) | |
| 9 | r19.3rmv 3600 | . . 3 ⊢ (∃𝑥 𝑥 ∈ N → (𝐴 ∈ R ↔ ∀𝑚 ∈ N 𝐴 ∈ R)) | |
| 10 | 7, 8, 9 | mp2b 8 | . 2 ⊢ (𝐴 ∈ R ↔ ∀𝑚 ∈ N 𝐴 ∈ R) |
| 11 | 6, 10 | sylibr 134 | 1 ⊢ (𝜑 → 𝐴 ∈ R) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 ∃wex 1541 ∈ wcel 2203 ∀wral 2520 class class class wbr 4109 ‘cfv 5352 1oc1o 6640 Ncnpi 7587 Rcnr 7612 <R cltr 7618 |
| 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-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-sep 4228 ax-nul 4236 ax-pow 4287 ax-pr 4322 ax-un 4554 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-ral 2525 df-rex 2526 df-v 2815 df-dif 3213 df-un 3215 df-in 3217 df-ss 3224 df-nul 3509 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-int 3950 df-br 4110 df-opab 4172 df-suc 4492 df-iom 4713 df-xp 4755 df-1o 6647 df-ni 7619 df-ltr 8045 |
| This theorem is referenced by: caucvgsrlemoffval 8111 caucvgsrlemofff 8112 caucvgsrlemoffcau 8113 caucvgsrlemoffgt1 8114 caucvgsrlemoffres 8115 |
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