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Theorem elfunsALTV2 39529
Description: Elementhood in the class of functions. (Contributed by Peter Mazsa, 31-Aug-2021.)
Assertion
Ref Expression
elfunsALTV2 (𝐹 ∈ FunsALTV ↔ ( ≀ 𝐹 ⊆ I ∧ 𝐹 ∈ Rels ))

Proof of Theorem elfunsALTV2
StepHypRef Expression
1 elfunsALTV 39528 . 2 (𝐹 ∈ FunsALTV ↔ ( ≀ 𝐹 ∈ CnvRefRels ∧ 𝐹 ∈ Rels ))
2 cosselcnvrefrels2 39369 . . . 4 ( ≀ 𝐹 ∈ CnvRefRels ↔ ( ≀ 𝐹 ⊆ I ∧ ≀ 𝐹 ∈ Rels ))
3 cosselrels 39326 . . . . 5 (𝐹 ∈ Rels → ≀ 𝐹 ∈ Rels )
43biantrud 541 . . . 4 (𝐹 ∈ Rels → ( ≀ 𝐹 ⊆ I ↔ ( ≀ 𝐹 ⊆ I ∧ ≀ 𝐹 ∈ Rels )))
52, 4bitr4id 293 . . 3 (𝐹 ∈ Rels → ( ≀ 𝐹 ∈ CnvRefRels ↔ ≀ 𝐹 ⊆ I ))
65pm5.32ri 586 . 2 (( ≀ 𝐹 ∈ CnvRefRels ∧ 𝐹 ∈ Rels ) ↔ ( ≀ 𝐹 ⊆ I ∧ 𝐹 ∈ Rels ))
71, 6bitri 278 1 (𝐹 ∈ FunsALTV ↔ ( ≀ 𝐹 ⊆ I ∧ 𝐹 ∈ Rels ))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wb 209  wa 401  wcel 2145  wss 3899   I cid 5549  ccoss 38934   Rels crels 38936   CnvRefRels ccnvrefrels 38942   FunsALTV cfunsALTV 38966
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-11 2194  ax-ext 2732  ax-sep 5251  ax-pow 5330  ax-pr 5398  ax-un 7737
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-sb 2100  df-clab 2739  df-cleq 2752  df-clel 2835  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-opab 5168  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-rels 39191  df-coss 39252  df-ssr 39329  df-cnvrefs 39356  df-cnvrefrels 39357  df-funss 39516  df-funsALTV 39517
This theorem is used by: (None)
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