Users' Mathboxes Mathbox for Peter Mazsa < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  dffunALTV2 Structured version   Visualization version   GIF version

Theorem dffunALTV2 39848
Description: Alternate definition of the function relation predicate, cf. dfdisjALTV2 39874. (Contributed by Peter Mazsa, 8-Feb-2018.)
Assertion
Ref Expression
dffunALTV2 ( FunALTV 𝐹 ↔ ( ≀ 𝐹 ⊆ I ∧ Rel 𝐹))

Proof of Theorem dffunALTV2
StepHypRef Expression
1 df-funALTV 39842 . 2 ( FunALTV 𝐹 ↔ ( CnvRefRel ≀ 𝐹 ∧ Rel 𝐹))
2 cnvrefrelcoss2 39692 . . 3 ( CnvRefRel ≀ 𝐹 ↔ ≀ 𝐹 ⊆ I )
32anbi1i 636 . 2 (( CnvRefRel ≀ 𝐹 ∧ Rel 𝐹) ↔ ( ≀ 𝐹 ⊆ I ∧ Rel 𝐹))
41, 3bitri 278 1 ( FunALTV 𝐹 ↔ ( ≀ 𝐹 ⊆ I ∧ Rel 𝐹))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   ↔ wb 209   ∧ wa 401   ⊆ wss 3900   I cid 5549  Rel wrel 5660   ≀ ccoss 39258   CnvRefRel wcnvrefrel 39267   FunALTV wfunALTV 39291
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1944  ax-6 2001  ax-7 2042  ax-8 2148  ax-9 2156  ax-11 2196  ax-ext 2735  ax-sep 5252  ax-pr 5395
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-sb 2101  df-clab 2742  df-cleq 2755  df-clel 2839  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-sn 4589  df-pr 4591  df-op 4839  df-br 5107  df-opab 5171  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-coss 39576  df-cnvrefrel 39682  df-funALTV 39842
This theorem is used by:  dffunALTV3  39849  dffunALTV4  39850  dffunALTV5  39851  funALTVss  39859
  Copyright terms: Public domain W3C validator