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Theorem elfunsALTV4 39530
Description: Elementhood in the class of functions. (Contributed by Peter Mazsa, 31-Aug-2021.)
Assertion
Ref Expression
elfunsALTV4 (𝐹 ∈ FunsALTV ↔ (∀𝑢∃*𝑥 𝑢𝐹𝑥𝐹 ∈ Rels ))
Distinct variable group:   𝑢,𝐹,𝑥

Proof of Theorem elfunsALTV4
StepHypRef Expression
1 elfunsALTV 39527 . 2 (𝐹 ∈ FunsALTV ↔ ( ≀ 𝐹 ∈ CnvRefRels ∧ 𝐹 ∈ Rels ))
2 cosselcnvrefrels4 39370 . . . 4 ( ≀ 𝐹 ∈ CnvRefRels ↔ (∀𝑢∃*𝑥 𝑢𝐹𝑥 ∧ ≀ 𝐹 ∈ Rels ))
3 cosselrels 39325 . . . . 5 (𝐹 ∈ Rels → ≀ 𝐹 ∈ Rels )
43biantrud 541 . . . 4 (𝐹 ∈ Rels → (∀𝑢∃*𝑥 𝑢𝐹𝑥 ↔ (∀𝑢∃*𝑥 𝑢𝐹𝑥 ∧ ≀ 𝐹 ∈ Rels )))
52, 4bitr4id 293 . . 3 (𝐹 ∈ Rels → ( ≀ 𝐹 ∈ CnvRefRels ↔ ∀𝑢∃*𝑥 𝑢𝐹𝑥))
65pm5.32ri 586 . 2 (( ≀ 𝐹 ∈ CnvRefRels ∧ 𝐹 ∈ Rels ) ↔ (∀𝑢∃*𝑥 𝑢𝐹𝑥𝐹 ∈ Rels ))
71, 6bitri 278 1 (𝐹 ∈ FunsALTV ↔ (∀𝑢∃*𝑥 𝑢𝐹𝑥𝐹 ∈ Rels ))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wb 209  wa 401  wal 1568  wcel 2145  ∃*wmo 2564   class class class wbr 5107  ccoss 38933   Rels crels 38935   CnvRefRels ccnvrefrels 38941   FunsALTV cfunsALTV 38965
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 2215  ax-ext 2734  ax-sep 5255  ax-pow 5334  ax-pr 5402  ax-un 7739
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2566  df-eu 2596  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ral 3079  df-rex 3089  df-rab 3415  df-v 3455  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4283  df-if 4486  df-pw 4562  df-sn 4588  df-pr 4590  df-op 4594  df-uni 4871  df-br 5108  df-opab 5172  df-id 5554  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-rn 5670  df-res 5671  df-rels 39190  df-coss 39251  df-ssr 39328  df-cnvrefs 39355  df-cnvrefrels 39356  df-funss 39515  df-funsALTV 39516
This theorem is used by: (None)
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