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| Mirrors > Home > ILE Home > Th. List > fiubm | GIF version | ||
| Description: Lemma for fiubz 11225 and fiubnn 11226. A general form of those theorems. (Contributed by Jim Kingdon, 29-Oct-2024.) |
| Ref | Expression |
|---|---|
| fiubm.a | ⊢ (𝜑 → 𝐴 ⊆ 𝐵) |
| fiubm.b | ⊢ (𝜑 → 𝐵 ⊆ ℚ) |
| fiubm.c | ⊢ (𝜑 → 𝐶 ∈ 𝐵) |
| fiubm.f | ⊢ (𝜑 → 𝐴 ∈ Fin) |
| Ref | Expression |
|---|---|
| fiubm | ⊢ (𝜑 → ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fiubm.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ 𝐵) | |
| 2 | rzal 3612 | . . 3 ⊢ (𝐴 = ∅ → ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝐶) | |
| 3 | brralrspcev 4174 | . . 3 ⊢ ((𝐶 ∈ 𝐵 ∧ ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝐶) → ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) | |
| 4 | 1, 2, 3 | syl2an 289 | . 2 ⊢ ((𝜑 ∧ 𝐴 = ∅) → ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) |
| 5 | fiubm.a | . . . 4 ⊢ (𝜑 → 𝐴 ⊆ 𝐵) | |
| 6 | 5 | adantr 276 | . . 3 ⊢ ((𝜑 ∧ 𝐴 ≠ ∅) → 𝐴 ⊆ 𝐵) |
| 7 | fiubm.b | . . . . . 6 ⊢ (𝜑 → 𝐵 ⊆ ℚ) | |
| 8 | 5, 7 | sstrd 3252 | . . . . 5 ⊢ (𝜑 → 𝐴 ⊆ ℚ) |
| 9 | 8 | adantr 276 | . . . 4 ⊢ ((𝜑 ∧ 𝐴 ≠ ∅) → 𝐴 ⊆ ℚ) |
| 10 | fiubm.f | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ Fin) | |
| 11 | 10 | adantr 276 | . . . 4 ⊢ ((𝜑 ∧ 𝐴 ≠ ∅) → 𝐴 ∈ Fin) |
| 12 | simpr 110 | . . . 4 ⊢ ((𝜑 ∧ 𝐴 ≠ ∅) → 𝐴 ≠ ∅) | |
| 13 | fimaxq 11223 | . . . 4 ⊢ ((𝐴 ⊆ ℚ ∧ 𝐴 ∈ Fin ∧ 𝐴 ≠ ∅) → ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) | |
| 14 | 9, 11, 12, 13 | syl3anc 1274 | . . 3 ⊢ ((𝜑 ∧ 𝐴 ≠ ∅) → ∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) |
| 15 | ssrexv 3307 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → (∃𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥 → ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥)) | |
| 16 | 6, 14, 15 | sylc 62 | . 2 ⊢ ((𝜑 ∧ 𝐴 ≠ ∅) → ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) |
| 17 | fin0or 7157 | . . 3 ⊢ (𝐴 ∈ Fin → (𝐴 = ∅ ∨ ∃𝑧 𝑧 ∈ 𝐴)) | |
| 18 | n0r 3526 | . . . 4 ⊢ (∃𝑧 𝑧 ∈ 𝐴 → 𝐴 ≠ ∅) | |
| 19 | 18 | orim2i 769 | . . 3 ⊢ ((𝐴 = ∅ ∨ ∃𝑧 𝑧 ∈ 𝐴) → (𝐴 = ∅ ∨ 𝐴 ≠ ∅)) |
| 20 | 10, 17, 19 | 3syl 17 | . 2 ⊢ (𝜑 → (𝐴 = ∅ ∨ 𝐴 ≠ ∅)) |
| 21 | 4, 16, 20 | mpjaodan 806 | 1 ⊢ (𝜑 → ∃𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐴 𝑦 ≤ 𝑥) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∨ wo 716 = wceq 1398 ∃wex 1541 ∈ wcel 2205 ≠ wne 2414 ∀wral 2522 ∃wrex 2523 ⊆ wss 3214 ∅c0 3512 class class class wbr 4115 Fincfn 6989 ≤ cle 8326 ℚcq 9973 |
| 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 2207 ax-14 2208 ax-ext 2216 ax-coll 4231 ax-sep 4234 ax-nul 4242 ax-pow 4293 ax-pr 4328 ax-un 4560 ax-setind 4665 ax-iinf 4716 ax-cnex 8235 ax-resscn 8236 ax-1cn 8237 ax-1re 8238 ax-icn 8239 ax-addcl 8240 ax-addrcl 8241 ax-mulcl 8242 ax-mulrcl 8243 ax-addcom 8244 ax-mulcom 8245 ax-addass 8246 ax-mulass 8247 ax-distr 8248 ax-i2m1 8249 ax-0lt1 8250 ax-1rid 8251 ax-0id 8252 ax-rnegex 8253 ax-precex 8254 ax-cnre 8255 ax-pre-ltirr 8256 ax-pre-ltwlin 8257 ax-pre-lttrn 8258 ax-pre-apti 8259 ax-pre-ltadd 8260 ax-pre-mulgt0 8261 ax-pre-mulext 8262 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rmo 2530 df-rab 2531 df-v 2817 df-sbc 3046 df-csb 3142 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-nul 3513 df-if 3626 df-pw 3677 df-sn 3701 df-pr 3702 df-op 3704 df-uni 3921 df-int 3956 df-iun 3999 df-br 4116 df-opab 4178 df-mpt 4179 df-tr 4215 df-id 4420 df-po 4423 df-iso 4424 df-iord 4493 df-on 4495 df-suc 4498 df-iom 4719 df-xp 4761 df-rel 4762 df-cnv 4763 df-co 4764 df-dm 4765 df-rn 4766 df-res 4767 df-ima 4768 df-iota 5318 df-fun 5360 df-fn 5361 df-f 5362 df-f1 5363 df-fo 5364 df-f1o 5365 df-fv 5366 df-riota 6012 df-ov 6062 df-oprab 6063 df-mpo 6064 df-1st 6348 df-2nd 6349 df-er 6781 df-en 6990 df-fin 6992 df-pnf 8327 df-mnf 8328 df-xr 8329 df-ltxr 8330 df-le 8331 df-sub 8464 df-neg 8465 df-reap 8868 df-ap 8875 df-div 8968 df-inn 9259 df-n0 9518 df-z 9599 df-q 9974 df-rp 10009 |
| This theorem is referenced by: fiubz 11225 fiubnn 11226 |
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