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Mirrors > Home > MPE Home > Th. List > Mathboxes > hfninf | Structured version Visualization version GIF version |
Description: ω is not hereditarily finite. (Contributed by Scott Fenton, 16-Jul-2015.) |
Ref | Expression |
---|---|
hfninf | ⊢ ¬ ω ∈ Hf |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elirr 8388 | . . 3 ⊢ ¬ ω ∈ ω | |
2 | elhf2g 31453 | . . . 4 ⊢ (ω ∈ Hf → (ω ∈ Hf ↔ (rank‘ω) ∈ ω)) | |
3 | ordom 6966 | . . . . . . 7 ⊢ Ord ω | |
4 | elong 5648 | . . . . . . 7 ⊢ (ω ∈ Hf → (ω ∈ On ↔ Ord ω)) | |
5 | 3, 4 | mpbiri 247 | . . . . . 6 ⊢ (ω ∈ Hf → ω ∈ On) |
6 | r111 8521 | . . . . . . . . 9 ⊢ 𝑅1:On–1-1→V | |
7 | f1dm 6018 | . . . . . . . . 9 ⊢ (𝑅1:On–1-1→V → dom 𝑅1 = On) | |
8 | 6, 7 | ax-mp 5 | . . . . . . . 8 ⊢ dom 𝑅1 = On |
9 | 8 | eleq2i 2680 | . . . . . . 7 ⊢ (ω ∈ dom 𝑅1 ↔ ω ∈ On) |
10 | rankonid 8575 | . . . . . . 7 ⊢ (ω ∈ dom 𝑅1 ↔ (rank‘ω) = ω) | |
11 | 9, 10 | bitr3i 265 | . . . . . 6 ⊢ (ω ∈ On ↔ (rank‘ω) = ω) |
12 | 5, 11 | sylib 207 | . . . . 5 ⊢ (ω ∈ Hf → (rank‘ω) = ω) |
13 | 12 | eleq1d 2672 | . . . 4 ⊢ (ω ∈ Hf → ((rank‘ω) ∈ ω ↔ ω ∈ ω)) |
14 | 2, 13 | bitrd 267 | . . 3 ⊢ (ω ∈ Hf → (ω ∈ Hf ↔ ω ∈ ω)) |
15 | 1, 14 | mtbiri 316 | . 2 ⊢ (ω ∈ Hf → ¬ ω ∈ Hf ) |
16 | pm2.01 179 | . 2 ⊢ ((ω ∈ Hf → ¬ ω ∈ Hf ) → ¬ ω ∈ Hf ) | |
17 | 15, 16 | ax-mp 5 | 1 ⊢ ¬ ω ∈ Hf |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 = wceq 1475 ∈ wcel 1977 Vcvv 3173 dom cdm 5038 Ord word 5639 Oncon0 5640 –1-1→wf1 5801 ‘cfv 5804 ωcom 6957 𝑅1cr1 8508 rankcrnk 8509 Hf chf 31449 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-reg 8380 ax-inf2 8421 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-reu 2903 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-om 6958 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-r1 8510 df-rank 8511 df-hf 31450 |
This theorem is referenced by: (None) |
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