Theorem cpcoll2d 40670

Description: cpcolld 40669 with an extra existential quantifier. (Contributed by Rohan Ridenour, 12-Aug-2023.)

Hypotheses

Ref	Expression
cpcoll2d.1	⊢ (𝜑 → 𝑥 ∈ 𝐴)
cpcoll2d.2	⊢ (𝜑 → ∃𝑦 𝑥𝐹𝑦)

Assertion

Ref	Expression
cpcoll2d	⊢ (𝜑 → ∃𝑦 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑦)

Distinct variable groups:   𝑥,𝑦,𝐹   𝑥,𝐴,𝑦

Allowed substitution hints:   𝜑(𝑥,𝑦)

Proof of Theorem cpcoll2d

Dummy variable 𝑎 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		cpcoll2d.2	. . 3 ⊢ (𝜑 → ∃𝑦 𝑥𝐹𝑦)
2		breq2 5063	. . . 4 ⊢ (𝑎 = 𝑦 → (𝑥𝐹𝑎 ↔ 𝑥𝐹𝑦))
3	2	cbvexvw 2043	. . 3 ⊢ (∃𝑎 𝑥𝐹𝑎 ↔ ∃𝑦 𝑥𝐹𝑦)
4	1, 3	sylibr 236	. 2 ⊢ (𝜑 → ∃𝑎 𝑥𝐹𝑎)
5		cpcoll2d.1	. . . . 5 ⊢ (𝜑 → 𝑥 ∈ 𝐴)
6	5	adantr 483	. . . 4 ⊢ ((𝜑 ∧ 𝑥𝐹𝑎) → 𝑥 ∈ 𝐴)
7		simpr 487	. . . 4 ⊢ ((𝜑 ∧ 𝑥𝐹𝑎) → 𝑥𝐹𝑎)
8	6, 7	cpcolld 40669	. . 3 ⊢ ((𝜑 ∧ 𝑥𝐹𝑎) → ∃𝑎 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑎)
9	2	cbvrexvw 3447	. . 3 ⊢ (∃𝑎 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑎 ↔ ∃𝑦 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑦)
10	8, 9	sylib 220	. 2 ⊢ ((𝜑 ∧ 𝑥𝐹𝑎) → ∃𝑦 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑦)
11	4, 10	exlimddv 1935	1 ⊢ (𝜑 → ∃𝑦 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑦)

Syntax hints:   → wi 4   ∧ wa 398  ∃wex 1779   ∈ wcel 2113  ∃wrex 3138   class class class wbr 5059   Coll ccoll 40661

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1969  ax-7 2014  ax-8 2115  ax-9 2123  ax-10 2144  ax-11 2160  ax-12 2176  ax-ext 2792  ax-sep 5196  ax-nul 5203  ax-pow 5259  ax-pr 5323  ax-un 7454

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1083  df-3an 1084  df-tru 1539  df-ex 1780  df-nf 1784  df-sb 2069  df-mo 2621  df-eu 2653  df-clab 2799  df-cleq 2813  df-clel 2892  df-nfc 2962  df-ne 3016  df-ral 3142  df-rex 3143  df-reu 3144  df-rab 3146  df-v 3493  df-sbc 3769  df-csb 3877  df-dif 3932  df-un 3934  df-in 3936  df-ss 3945  df-pss 3947  df-nul 4285  df-if 4461  df-pw 4534  df-sn 4561  df-pr 4563  df-tp 4565  df-op 4567  df-uni 4832  df-int 4870  df-iun 4914  df-iin 4915  df-br 5060  df-opab 5122  df-mpt 5140  df-tr 5166  df-id 5453  df-eprel 5458  df-po 5467  df-so 5468  df-fr 5507  df-we 5509  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-res 5560  df-ima 5561  df-pred 6141  df-ord 6187  df-on 6188  df-lim 6189  df-suc 6190  df-iota 6307  df-fun 6350  df-fn 6351  df-f 6352  df-f1 6353  df-fo 6354  df-f1o 6355  df-fv 6356  df-om 7574  df-wrecs 7940  df-recs 8001  df-rdg 8039  df-r1 9186  df-rank 9187  df-scott 40647  df-coll 40662

This theorem is referenced by:  grumnudlem  40696