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| Mirrors > Home > MPE Home > Th. List > funrel | Structured version Visualization version GIF version | ||
| Description: A function is a relation. (Contributed by NM, 1-Aug-1994.) |
| Ref | Expression |
|---|---|
| funrel | ⊢ (Fun 𝐴 → Rel 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-fun 6539 | . 2 ⊢ (Fun 𝐴 ↔ (Rel 𝐴 ∧ (𝐴 ∘ ◡𝐴) ⊆ I )) | |
| 2 | 1 | simplbi 502 | 1 ⊢ (Fun 𝐴 → Rel 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ⊆ wss 3902 I cid 5553 ◡ccnv 5658 ∘ ccom 5663 Rel wrel 5664 Fun wfun 6531 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
| This proof depends on definitions: df-bi 210 df-an 402 df-fun 6539 |
| This theorem is used by: 0nelfun 6555 funeu 6562 nfunv 6570 funopg 6571 funssres 6581 funun 6583 fununfun 6585 fununi 6612 funcnvres2 6617 fnrel 6638 fcoi1 6753 f1orel 6824 funbrfv 6930 funbrfv2b 6939 funfv2 6970 funfvbrb 7047 fimacnvinrn 7068 fvn0ssdmfun 7071 funopsnOLD 7149 funexw 7953 funfv1st2nd 8047 funelss 8048 funeldmdif 8049 frrlem6 8294 tfrlem6OLD 8375 tfr2b 8389 pmresg 8881 funen1cnv 9039 fundmen 9042 rankwflemb 9779 gruima 10815 structcnvcnv 17251 inviso1 17861 setciso 18186 rngciso 20806 ringciso 20840 nolt02o 27939 nogt01o 27940 nosupbnd1 27958 nosupbnd2lem1 27959 nosupbnd2 27960 noinfbnd1 27973 noinfbnd2lem1 27974 noinfbnd2 27975 noetasuplem2 27978 noetasuplem3 27979 noetasuplem4 27980 noetainflem2 27982 edg0iedg0 29520 edg0usgr 29721 usgr1v0edg 29725 fgreu 33152 fressupp 33168 gsumhashmul 33515 cycpmconjvlem 33589 cycpmconjslem2 33603 bnj1379 35347 fundmpss 36354 funsseq 36355 imageval 36515 imagesset 36540 cocnv 38483 frege124d 44609 frege129d 44611 frege133d 44613 funbrafv 48054 funbrafv2b 48055 funbrafv2 48143 isubgrvtxuhgr 48788 rngcisoALTV 49200 ringcisoALTV 49234 ackvalsuc0val 49625 |
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