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| Mirrors > Home > MPE Home > Th. List > Mathboxes > dffunALTV2 | Structured version Visualization version GIF version | ||
| Description: Alternate definition of the function relation predicate, cf. dfdisjALTV2 39337. (Contributed by Peter Mazsa, 8-Feb-2018.) |
| Ref | Expression |
|---|---|
| dffunALTV2 | ⊢ ( FunALTV 𝐹 ↔ ( ≀ 𝐹 ⊆ I ∧ Rel 𝐹)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-funALTV 39305 | . 2 ⊢ ( FunALTV 𝐹 ↔ ( CnvRefRel ≀ 𝐹 ∧ Rel 𝐹)) | |
| 2 | cnvrefrelcoss2 39155 | . . 3 ⊢ ( CnvRefRel ≀ 𝐹 ↔ ≀ 𝐹 ⊆ I ) | |
| 3 | 2 | anbi1i 635 | . 2 ⊢ (( CnvRefRel ≀ 𝐹 ∧ Rel 𝐹) ↔ ( ≀ 𝐹 ⊆ I ∧ Rel 𝐹)) |
| 4 | 1, 3 | bitri 278 | 1 ⊢ ( FunALTV 𝐹 ↔ ( ≀ 𝐹 ⊆ I ∧ Rel 𝐹)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 209 ∧ wa 400 ⊆ wss 3913 I cid 5556 Rel wrel 5667 ≀ ccoss 38721 CnvRefRel wcnvrefrel 38730 FunALTV wfunALTV 38754 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-11 2198 ax-ext 2741 ax-sep 5261 ax-pr 5405 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-br 5114 df-opab 5178 df-id 5557 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-coss 39039 df-cnvrefrel 39145 df-funALTV 39305 |
| This theorem is referenced by: dffunALTV3 39312 dffunALTV4 39313 dffunALTV5 39314 funALTVss 39322 |
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