| Mathbox for Rohan Ridenour |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > cpcoll2d | Structured version Visualization version GIF version | ||
| Description: cpcolld 45227 with an extra existential quantifier. (Contributed by Rohan Ridenour, 12-Aug-2023.) |
| Ref | Expression |
|---|---|
| cpcoll2d.1 | ⊢ (𝜑 → 𝑥 ∈ 𝐴) |
| cpcoll2d.2 | ⊢ (𝜑 → ∃𝑦 𝑥𝐹𝑦) |
| Ref | Expression |
|---|---|
| cpcoll2d | ⊢ (𝜑 → ∃𝑦 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑦) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cpcoll2d.2 | . . 3 ⊢ (𝜑 → ∃𝑦 𝑥𝐹𝑦) | |
| 2 | breq2 5107 | . . . 4 ⊢ (𝑎 = 𝑦 → (𝑥𝐹𝑎 ↔ 𝑥𝐹𝑦)) | |
| 3 | 2 | cbvexvw 2070 | . . 3 ⊢ (∃𝑎 𝑥𝐹𝑎 ↔ ∃𝑦 𝑥𝐹𝑦) |
| 4 | 1, 3 | sylibr 237 | . 2 ⊢ (𝜑 → ∃𝑎 𝑥𝐹𝑎) |
| 5 | cpcoll2d.1 | . . . . 5 ⊢ (𝜑 → 𝑥 ∈ 𝐴) | |
| 6 | 5 | adantr 486 | . . . 4 ⊢ ((𝜑 ∧ 𝑥𝐹𝑎) → 𝑥 ∈ 𝐴) |
| 7 | simpr 490 | . . . 4 ⊢ ((𝜑 ∧ 𝑥𝐹𝑎) → 𝑥𝐹𝑎) | |
| 8 | 6, 7 | cpcolld 45227 | . . 3 ⊢ ((𝜑 ∧ 𝑥𝐹𝑎) → ∃𝑎 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑎) |
| 9 | 2 | cbvrexvw 3242 | . . 3 ⊢ (∃𝑎 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑎 ↔ ∃𝑦 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑦) |
| 10 | 8, 9 | sylib 221 | . 2 ⊢ ((𝜑 ∧ 𝑥𝐹𝑎) → ∃𝑦 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑦) |
| 11 | 4, 10 | exlimddv 1968 | 1 ⊢ (𝜑 → ∃𝑦 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑦) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∃wex 1812 ∈ wcel 2145 ∃wrex 3087 class class class wbr 5103 Coll ccoll 45219 |
| 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 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-iin 4954 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7421 df-om 7876 df-2nd 8000 df-frecs 8292 df-wrecs 8323 df-recs 8372 df-rdg 8411 df-r1 9761 df-rank 9762 df-scott 9922 df-coll 45220 |
| This theorem is used by: grumnudlem 45254 |
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