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Mathbox for Stefan O'Rear |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > fiphp3d | Structured version Visualization version GIF version |
Description: Infinite pigeonhole principle for partitioning an infinite set between finitely many buckets. (Contributed by Stefan O'Rear, 18-Oct-2014.) |
Ref | Expression |
---|---|
fiphp3d.a | ⊢ (𝜑 → 𝐴 ≈ ℕ) |
fiphp3d.b | ⊢ (𝜑 → 𝐵 ∈ Fin) |
fiphp3d.c | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐷 ∈ 𝐵) |
Ref | Expression |
---|---|
fiphp3d | ⊢ (𝜑 → ∃𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ≈ ℕ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ominf 9321 | . . . . 5 ⊢ ¬ ω ∈ Fin | |
2 | iunrab 5075 | . . . . . . . 8 ⊢ ∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} = {𝑥 ∈ 𝐴 ∣ ∃𝑦 ∈ 𝐵 𝐷 = 𝑦} | |
3 | fiphp3d.c | . . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐷 ∈ 𝐵) | |
4 | risset 3239 | . . . . . . . . . . . 12 ⊢ (𝐷 ∈ 𝐵 ↔ ∃𝑦 ∈ 𝐵 𝑦 = 𝐷) | |
5 | eqcom 2747 | . . . . . . . . . . . . 13 ⊢ (𝑦 = 𝐷 ↔ 𝐷 = 𝑦) | |
6 | 5 | rexbii 3100 | . . . . . . . . . . . 12 ⊢ (∃𝑦 ∈ 𝐵 𝑦 = 𝐷 ↔ ∃𝑦 ∈ 𝐵 𝐷 = 𝑦) |
7 | 4, 6 | bitri 275 | . . . . . . . . . . 11 ⊢ (𝐷 ∈ 𝐵 ↔ ∃𝑦 ∈ 𝐵 𝐷 = 𝑦) |
8 | 3, 7 | sylib 218 | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ∃𝑦 ∈ 𝐵 𝐷 = 𝑦) |
9 | 8 | ralrimiva 3152 | . . . . . . . . 9 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝐷 = 𝑦) |
10 | rabid2 3478 | . . . . . . . . 9 ⊢ (𝐴 = {𝑥 ∈ 𝐴 ∣ ∃𝑦 ∈ 𝐵 𝐷 = 𝑦} ↔ ∀𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝐷 = 𝑦) | |
11 | 9, 10 | sylibr 234 | . . . . . . . 8 ⊢ (𝜑 → 𝐴 = {𝑥 ∈ 𝐴 ∣ ∃𝑦 ∈ 𝐵 𝐷 = 𝑦}) |
12 | 2, 11 | eqtr4id 2799 | . . . . . . 7 ⊢ (𝜑 → ∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} = 𝐴) |
13 | 12 | eleq1d 2829 | . . . . . 6 ⊢ (𝜑 → (∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin ↔ 𝐴 ∈ Fin)) |
14 | fiphp3d.a | . . . . . . . 8 ⊢ (𝜑 → 𝐴 ≈ ℕ) | |
15 | nnenom 14031 | . . . . . . . 8 ⊢ ℕ ≈ ω | |
16 | entr 9066 | . . . . . . . 8 ⊢ ((𝐴 ≈ ℕ ∧ ℕ ≈ ω) → 𝐴 ≈ ω) | |
17 | 14, 15, 16 | sylancl 585 | . . . . . . 7 ⊢ (𝜑 → 𝐴 ≈ ω) |
18 | enfi 9253 | . . . . . . 7 ⊢ (𝐴 ≈ ω → (𝐴 ∈ Fin ↔ ω ∈ Fin)) | |
19 | 17, 18 | syl 17 | . . . . . 6 ⊢ (𝜑 → (𝐴 ∈ Fin ↔ ω ∈ Fin)) |
20 | 13, 19 | bitrd 279 | . . . . 5 ⊢ (𝜑 → (∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin ↔ ω ∈ Fin)) |
21 | 1, 20 | mtbiri 327 | . . . 4 ⊢ (𝜑 → ¬ ∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) |
22 | fiphp3d.b | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ Fin) | |
23 | iunfi 9411 | . . . . 5 ⊢ ((𝐵 ∈ Fin ∧ ∀𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) → ∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) | |
24 | 22, 23 | sylan 579 | . . . 4 ⊢ ((𝜑 ∧ ∀𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) → ∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) |
25 | 21, 24 | mtand 815 | . . 3 ⊢ (𝜑 → ¬ ∀𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) |
26 | rexnal 3106 | . . 3 ⊢ (∃𝑦 ∈ 𝐵 ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin ↔ ¬ ∀𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) | |
27 | 25, 26 | sylibr 234 | . 2 ⊢ (𝜑 → ∃𝑦 ∈ 𝐵 ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) |
28 | 17, 15 | jctir 520 | . . . . 5 ⊢ (𝜑 → (𝐴 ≈ ω ∧ ℕ ≈ ω)) |
29 | ssrab2 4103 | . . . . . 6 ⊢ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ⊆ 𝐴 | |
30 | 29 | jctl 523 | . . . . 5 ⊢ (¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin → ({𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ⊆ 𝐴 ∧ ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin)) |
31 | ctbnfien 42774 | . . . . 5 ⊢ (((𝐴 ≈ ω ∧ ℕ ≈ ω) ∧ ({𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ⊆ 𝐴 ∧ ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin)) → {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ≈ ℕ) | |
32 | 28, 30, 31 | syl2an 595 | . . . 4 ⊢ ((𝜑 ∧ ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) → {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ≈ ℕ) |
33 | 32 | ex 412 | . . 3 ⊢ (𝜑 → (¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin → {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ≈ ℕ)) |
34 | 33 | reximdv 3176 | . 2 ⊢ (𝜑 → (∃𝑦 ∈ 𝐵 ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin → ∃𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ≈ ℕ)) |
35 | 27, 34 | mpd 15 | 1 ⊢ (𝜑 → ∃𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ≈ ℕ) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1537 ∈ wcel 2108 ∀wral 3067 ∃wrex 3076 {crab 3443 ⊆ wss 3976 ∪ ciun 5015 class class class wbr 5166 ωcom 7903 ≈ cen 9000 Fincfn 9003 ℕcn 12293 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pow 5383 ax-pr 5447 ax-un 7770 ax-inf2 9710 ax-cnex 11240 ax-resscn 11241 ax-1cn 11242 ax-icn 11243 ax-addcl 11244 ax-addrcl 11245 ax-mulcl 11246 ax-mulrcl 11247 ax-mulcom 11248 ax-addass 11249 ax-mulass 11250 ax-distr 11251 ax-i2m1 11252 ax-1ne0 11253 ax-1rid 11254 ax-rnegex 11255 ax-rrecex 11256 ax-cnre 11257 ax-pre-lttri 11258 ax-pre-lttrn 11259 ax-pre-ltadd 11260 ax-pre-mulgt0 11261 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-nel 3053 df-ral 3068 df-rex 3077 df-reu 3389 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-pss 3996 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-int 4971 df-iun 5017 df-br 5167 df-opab 5229 df-mpt 5250 df-tr 5284 df-id 5593 df-eprel 5599 df-po 5607 df-so 5608 df-fr 5652 df-we 5654 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-pred 6332 df-ord 6398 df-on 6399 df-lim 6400 df-suc 6401 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 df-fv 6581 df-riota 7404 df-ov 7451 df-oprab 7452 df-mpo 7453 df-om 7904 df-2nd 8031 df-frecs 8322 df-wrecs 8353 df-recs 8427 df-rdg 8466 df-1o 8522 df-er 8763 df-en 9004 df-dom 9005 df-sdom 9006 df-fin 9007 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11522 df-neg 11523 df-nn 12294 df-n0 12554 df-z 12640 df-uz 12904 |
This theorem is referenced by: pellexlem5 42789 |
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