Users' Mathboxes Mathbox for Rohan Ridenour < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  cpcolld Structured version   Visualization version   GIF version

Theorem cpcolld 45227
Description: Property of the collection operation. (Contributed by Rohan Ridenour, 11-Aug-2023.)
Hypotheses
Ref Expression
cpcolld.1 (𝜑 → 𝑥 ∈ 𝐴)
cpcolld.2 (𝜑 → 𝑥𝐹𝑦)
Assertion
Ref Expression
cpcolld (𝜑 → ∃𝑦 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑦)
Distinct variable groups:   𝑥,𝑦,𝐹   𝑥,𝐴,𝑦
Allowed substitution hints:   𝜑(𝑥, 𝑦)

Proof of Theorem cpcolld
Dummy variable 𝑧 is distinct from all other variables.
StepHypRef Expression
1 cpcolld.1 . . 3 (𝜑 → 𝑥 ∈ 𝐴)
2 cpcolld.2 . . . . . 6 (𝜑 → 𝑥𝐹𝑦)
3 vex 3455 . . . . . . 7 𝑦 ∈ V
4 breq2 5107 . . . . . . 7 (𝑧 = 𝑦 → (𝑥𝐹𝑧 ↔ 𝑥𝐹𝑦))
53, 4elab 3633 . . . . . 6 (𝑦 ∈ {𝑧 ∣ 𝑥𝐹𝑧} ↔ 𝑥𝐹𝑦)
62, 5sylibr 237 . . . . 5 (𝜑 → 𝑦 ∈ {𝑧 ∣ 𝑥𝐹𝑧})
7619.8ad 2219 . . . 4 (𝜑 → ∃𝑦 𝑦 ∈ {𝑧 ∣ 𝑥𝐹𝑧})
87scotteld 9940 . . 3 (𝜑 → ∃𝑦 𝑦 ∈ Scott {𝑧 ∣ 𝑥𝐹𝑧})
9 ssiun2 5006 . . . . . . . 8 (𝑥 ∈ 𝐴 → Scott {𝑧 ∣ 𝑥𝐹𝑧} ⊆ ∪ 𝑥 ∈ 𝐴 Scott {𝑧 ∣ 𝑥𝐹𝑧})
10 dfcoll2 45221 . . . . . . . 8 (𝐹 Coll 𝐴) = ∪ 𝑥 ∈ 𝐴 Scott {𝑧 ∣ 𝑥𝐹𝑧}
119, 10sseqtrrdi 3972 . . . . . . 7 (𝑥 ∈ 𝐴 → Scott {𝑧 ∣ 𝑥𝐹𝑧} ⊆ (𝐹 Coll 𝐴))
1211sselda 3931 . . . . . 6 ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ Scott {𝑧 ∣ 𝑥𝐹𝑧}) → 𝑦 ∈ (𝐹 Coll 𝐴))
134elscottab 9935 . . . . . . 7 (𝑦 ∈ Scott {𝑧 ∣ 𝑥𝐹𝑧} → 𝑥𝐹𝑦)
1413adantl 487 . . . . . 6 ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ Scott {𝑧 ∣ 𝑥𝐹𝑧}) → 𝑥𝐹𝑦)
1512, 14jca 521 . . . . 5 ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ Scott {𝑧 ∣ 𝑥𝐹𝑧}) → (𝑦 ∈ (𝐹 Coll 𝐴) ∧ 𝑥𝐹𝑦))
1615ex 418 . . . 4 (𝑥 ∈ 𝐴 → (𝑦 ∈ Scott {𝑧 ∣ 𝑥𝐹𝑧} → (𝑦 ∈ (𝐹 Coll 𝐴) ∧ 𝑥𝐹𝑦)))
1716eximdv 1950 . . 3 (𝑥 ∈ 𝐴 → (∃𝑦 𝑦 ∈ Scott {𝑧 ∣ 𝑥𝐹𝑧} → ∃𝑦(𝑦 ∈ (𝐹 Coll 𝐴) ∧ 𝑥𝐹𝑦)))
181, 8, 17sylc 66 . 2 (𝜑 → ∃𝑦(𝑦 ∈ (𝐹 Coll 𝐴) ∧ 𝑥𝐹𝑦))
19 df-rex 3088 . 2 (∃𝑦 ∈ (𝐹 Coll 𝐴)𝑥𝐹𝑦 ↔ ∃𝑦(𝑦 ∈ (𝐹 Coll 𝐴) ∧ 𝑥𝐹𝑦))
2018, 19sylibr 237 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  {cab 2739  ∃wrex 3087  ∪ ciun 4951   class class class wbr 5103  Scott cscott 9921   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:  cpcoll2d  45228
  Copyright terms: Public domain W3C validator