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| Mirrors > Home > ILE Home > Th. List > exmidlpo | GIF version | ||
| Description: Excluded middle implies the Limited Principle of Omniscience (LPO). (Contributed by Jim Kingdon, 29-Mar-2023.) |
| Ref | Expression |
|---|---|
| exmidlpo | ⊢ (EXMID → ω ∈ Omni) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | exmidomni 7340 | . 2 ⊢ (EXMID ↔ ∀𝑥 𝑥 ∈ Omni) | |
| 2 | omex 4691 | . . 3 ⊢ ω ∈ V | |
| 3 | eleq1 2294 | . . 3 ⊢ (𝑥 = ω → (𝑥 ∈ Omni ↔ ω ∈ Omni)) | |
| 4 | 2, 3 | spcv 2900 | . 2 ⊢ (∀𝑥 𝑥 ∈ Omni → ω ∈ Omni) |
| 5 | 1, 4 | sylbi 121 | 1 ⊢ (EXMID → ω ∈ Omni) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∀wal 1395 ∈ wcel 2202 EXMIDwem 4284 ωcom 4688 Omnicomni 7332 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-nul 4215 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-iinf 4686 |
| This theorem depends on definitions: df-bi 117 df-dc 842 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-sbc 3032 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-br 4089 df-opab 4151 df-mpt 4152 df-exmid 4285 df-id 4390 df-suc 4468 df-iom 4689 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-fv 5334 df-1o 6581 df-2o 6582 df-omni 7333 |
| This theorem is referenced by: exmidmp 7355 |
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