| Mathbox for Stefan O'Rear |
< Previous
Next >
Nearby theorems |
||
| 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 9233 | . . . . 5 ⊢ ¬ ω ∈ Fin | |
| 2 | iunrab 5010 | . . . . . . . 8 ⊢ ∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} = {𝑥 ∈ 𝐴 ∣ ∃𝑦 ∈ 𝐵 𝐷 = 𝑦} | |
| 3 | fiphp3d.c | . . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐷 ∈ 𝐵) | |
| 4 | risset 3237 | . . . . . . . . . . . 12 ⊢ (𝐷 ∈ 𝐵 ↔ ∃𝑦 ∈ 𝐵 𝑦 = 𝐷) | |
| 5 | eqcom 2767 | . . . . . . . . . . . . 13 ⊢ (𝑦 = 𝐷 ↔ 𝐷 = 𝑦) | |
| 6 | 5 | rexbii 3109 | . . . . . . . . . . . 12 ⊢ (∃𝑦 ∈ 𝐵 𝑦 = 𝐷 ↔ ∃𝑦 ∈ 𝐵 𝐷 = 𝑦) |
| 7 | 4, 6 | bitri 278 | . . . . . . . . . . 11 ⊢ (𝐷 ∈ 𝐵 ↔ ∃𝑦 ∈ 𝐵 𝐷 = 𝑦) |
| 8 | 3, 7 | sylib 221 | . . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ∃𝑦 ∈ 𝐵 𝐷 = 𝑦) |
| 9 | 8 | ralrimiva 3154 | . . . . . . . . 9 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝐷 = 𝑦) |
| 10 | rabid2 3444 | . . . . . . . . 9 ⊢ (𝐴 = {𝑥 ∈ 𝐴 ∣ ∃𝑦 ∈ 𝐵 𝐷 = 𝑦} ↔ ∀𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝐷 = 𝑦) | |
| 11 | 9, 10 | sylibr 237 | . . . . . . . 8 ⊢ (𝜑 → 𝐴 = {𝑥 ∈ 𝐴 ∣ ∃𝑦 ∈ 𝐵 𝐷 = 𝑦}) |
| 12 | 2, 11 | eqtr4id 2814 | . . . . . . 7 ⊢ (𝜑 → ∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} = 𝐴) |
| 13 | 12 | eleq1d 2845 | . . . . . 6 ⊢ (𝜑 → (∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin ↔ 𝐴 ∈ Fin)) |
| 14 | fiphp3d.a | . . . . . . . 8 ⊢ (𝜑 → 𝐴 ≈ ℕ) | |
| 15 | nnenom 14092 | . . . . . . . 8 ⊢ ℕ ≈ ω | |
| 16 | entr 9011 | . . . . . . . 8 ⊢ ((𝐴 ≈ ℕ ∧ ℕ ≈ ω) → 𝐴 ≈ ω) | |
| 17 | 14, 15, 16 | sylancl 598 | . . . . . . 7 ⊢ (𝜑 → 𝐴 ≈ ω) |
| 18 | enfi 9180 | . . . . . . 7 ⊢ (𝐴 ≈ ω → (𝐴 ∈ Fin ↔ ω ∈ Fin)) | |
| 19 | 17, 18 | syl 18 | . . . . . 6 ⊢ (𝜑 → (𝐴 ∈ Fin ↔ ω ∈ Fin)) |
| 20 | 13, 19 | bitrd 282 | . . . . 5 ⊢ (𝜑 → (∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin ↔ ω ∈ Fin)) |
| 21 | 1, 20 | mtbiri 330 | . . . 4 ⊢ (𝜑 → ¬ ∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) |
| 22 | fiphp3d.b | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ Fin) | |
| 23 | iunfi 9310 | . . . . 5 ⊢ ((𝐵 ∈ Fin ∧ ∀𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) → ∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) | |
| 24 | 22, 23 | sylan 592 | . . . 4 ⊢ ((𝜑 ∧ ∀𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) → ∪ 𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) |
| 25 | 21, 24 | mtand 828 | . . 3 ⊢ (𝜑 → ¬ ∀𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) |
| 26 | rexnal 3114 | . . 3 ⊢ (∃𝑦 ∈ 𝐵 ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin ↔ ¬ ∀𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) | |
| 27 | 25, 26 | sylibr 237 | . 2 ⊢ (𝜑 → ∃𝑦 ∈ 𝐵 ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) |
| 28 | 17, 15 | jctir 530 | . . . . 5 ⊢ (𝜑 → (𝐴 ≈ ω ∧ ℕ ≈ ω)) |
| 29 | ssrab2 4027 | . . . . . 6 ⊢ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ⊆ 𝐴 | |
| 30 | 29 | jctl 533 | . . . . 5 ⊢ (¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin → ({𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ⊆ 𝐴 ∧ ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin)) |
| 31 | ctbnfien 43763 | . . . . 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 608 | . . . 4 ⊢ ((𝜑 ∧ ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin) → {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ≈ ℕ) |
| 33 | 32 | ex 418 | . . 3 ⊢ (𝜑 → (¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin → {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ≈ ℕ)) |
| 34 | 33 | reximdv 3177 | . 2 ⊢ (𝜑 → (∃𝑦 ∈ 𝐵 ¬ {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ∈ Fin → ∃𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ≈ ℕ)) |
| 35 | 27, 34 | mpd 16 | 1 ⊢ (𝜑 → ∃𝑦 ∈ 𝐵 {𝑥 ∈ 𝐴 ∣ 𝐷 = 𝑦} ≈ ℕ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ∀wral 3076 ∃wrex 3086 {crab 3412 ⊆ wss 3898 ∪ ciun 4950 class class class wbr 5102 ωcom 7860 ≈ cen 8948 Fincfn 8951 ℕcn 12305 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7734 ax-inf2 9620 ax-cnex 11228 ax-resscn 11229 ax-1cn 11230 ax-icn 11231 ax-addcl 11232 ax-addrcl 11233 ax-mulcl 11234 ax-mulrcl 11235 ax-mulcom 11236 ax-addass 11237 ax-mulass 11238 ax-distr 11239 ax-i2m1 11240 ax-1ne0 11241 ax-1rid 11242 ax-rnegex 11243 ax-rrecex 11244 ax-cnre 11245 ax-pre-lttri 11246 ax-pre-lttrn 11247 ax-pre-ltadd 11248 ax-pre-mulgt0 11249 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6293 df-ord 6354 df-on 6355 df-lim 6356 df-suc 6357 df-iota 6483 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-fv 6535 df-riota 7365 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7861 df-2nd 7985 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-1o 8454 df-er 8695 df-en 8952 df-dom 8953 df-sdom 8954 df-fin 8955 df-pnf 11317 df-mnf 11318 df-xr 11319 df-ltxr 11320 df-le 11321 df-sub 11515 df-neg 11516 df-nn 12306 df-n0 12577 df-z 12664 df-uz 12936 |
| This theorem is used by: pellexlem5 43778 |
| Copyright terms: Public domain | W3C validator |