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Mirrors > Home > ILE Home > Th. List > funeqi | GIF version |
Description: Equality inference for the function predicate. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) |
Ref | Expression |
---|---|
funeqi.1 | ⊢ 𝐴 = 𝐵 |
Ref | Expression |
---|---|
funeqi | ⊢ (Fun 𝐴 ↔ Fun 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | funeqi.1 | . 2 ⊢ 𝐴 = 𝐵 | |
2 | funeq 5143 | . 2 ⊢ (𝐴 = 𝐵 → (Fun 𝐴 ↔ Fun 𝐵)) | |
3 | 1, 2 | ax-mp 5 | 1 ⊢ (Fun 𝐴 ↔ Fun 𝐵) |
Colors of variables: wff set class |
Syntax hints: ↔ wb 104 = wceq 1331 Fun wfun 5117 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-in 3077 df-ss 3084 df-br 3930 df-opab 3990 df-rel 4546 df-cnv 4547 df-co 4548 df-fun 5125 |
This theorem is referenced by: funmpt 5161 funmpt2 5162 funprg 5173 funtpg 5174 funtp 5176 funcnvuni 5192 f1cnvcnv 5339 f1co 5340 fun11iun 5388 f10 5401 funoprabg 5870 mpofun 5873 ovidig 5888 tposfun 6157 tfri1dALT 6248 tfrcl 6261 rdgfun 6270 frecfun 6292 frecfcllem 6301 th3qcor 6533 ssdomg 6672 sbthlem7 6851 sbthlemi8 6852 casefun 6970 caseinj 6974 djufun 6989 djuinj 6991 ctssdccl 6996 axaddf 7676 axmulf 7677 strleund 12047 strleun 12048 1strbas 12058 2strbasg 12060 2stropg 12061 |
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