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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 38760. (Contributed by Peter Mazsa, 8-Feb-2018.) |
| Ref | Expression |
|---|---|
| dffunALTV2 | ⊢ ( FunALTV 𝐹 ↔ ( ≀ 𝐹 ⊆ I ∧ Rel 𝐹)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-funALTV 38728 | . 2 ⊢ ( FunALTV 𝐹 ↔ ( CnvRefRel ≀ 𝐹 ∧ Rel 𝐹)) | |
| 2 | cnvrefrelcoss2 38582 | . . 3 ⊢ ( CnvRefRel ≀ 𝐹 ↔ ≀ 𝐹 ⊆ I ) | |
| 3 | 2 | anbi1i 624 | . 2 ⊢ (( CnvRefRel ≀ 𝐹 ∧ Rel 𝐹) ↔ ( ≀ 𝐹 ⊆ I ∧ Rel 𝐹)) |
| 4 | 1, 3 | bitri 275 | 1 ⊢ ( FunALTV 𝐹 ↔ ( ≀ 𝐹 ⊆ I ∧ Rel 𝐹)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 ⊆ wss 3897 I cid 5508 Rel wrel 5619 ≀ ccoss 38223 CnvRefRel wcnvrefrel 38232 FunALTV wfunALTV 38254 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-11 2160 ax-ext 2703 ax-sep 5232 ax-nul 5242 ax-pr 5368 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2710 df-cleq 2723 df-clel 2806 df-ral 3048 df-rex 3057 df-rab 3396 df-v 3438 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-nul 4281 df-if 4473 df-sn 4574 df-pr 4576 df-op 4580 df-br 5090 df-opab 5152 df-id 5509 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-coss 38456 df-cnvrefrel 38572 df-funALTV 38728 |
| This theorem is referenced by: dffunALTV3 38735 dffunALTV4 38736 dffunALTV5 38737 funALTVss 38745 |
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