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| Mirrors > Home > ILE Home > Th. List > ensymd | GIF version | ||
| Description: Symmetry of equinumerosity. Deduction form of ensym 6946. (Contributed by David Moews, 1-May-2017.) |
| Ref | Expression |
|---|---|
| ensymd.1 | ⊢ (𝜑 → 𝐴 ≈ 𝐵) |
| Ref | Expression |
|---|---|
| ensymd | ⊢ (𝜑 → 𝐵 ≈ 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ensymd.1 | . 2 ⊢ (𝜑 → 𝐴 ≈ 𝐵) | |
| 2 | ensym 6946 | . 2 ⊢ (𝐴 ≈ 𝐵 → 𝐵 ≈ 𝐴) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → 𝐵 ≈ 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 class class class wbr 4083 ≈ cen 6898 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4259 ax-pr 4294 ax-un 4525 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-br 4084 df-opab 4146 df-id 4385 df-xp 4726 df-rel 4727 df-cnv 4728 df-co 4729 df-dm 4730 df-rn 4731 df-res 4732 df-ima 4733 df-fun 5323 df-fn 5324 df-f 5325 df-f1 5326 df-fo 5327 df-f1o 5328 df-er 6693 df-en 6901 |
| This theorem is referenced by: f1imaeng 6957 f1imaen2g 6958 en2sn 6979 xpdom3m 7006 phplem4 7029 phplem4dom 7036 php5dom 7037 phpm 7040 phplem4on 7042 dif1en 7054 dif1enen 7055 fisbth 7058 fin0 7060 fin0or 7061 fidcen 7074 fientri3 7093 unsnfidcex 7098 unsnfidcel 7099 fiintim 7109 fisseneq 7112 f1ofi 7126 endjusym 7279 eninl 7280 eninr 7281 pm54.43 7379 djuen 7409 dju1en 7411 djuassen 7415 xpdjuen 7416 uzenom 10664 hashennnuni 11018 hashennn 11019 hashcl 11020 hashfz1 11022 hashen 11023 fihashfn 11039 fihashdom 11042 hashunlem 11043 zfz1iso 11081 summodclem2 11914 zsumdc 11916 prodmodclem2 12109 zproddc 12111 4sqlem11 12945 ennnfonelemen 13013 exmidunben 13018 ctinfom 13020 ctinf 13022 isnzr2 14169 znfi 14640 znhash 14641 usgrsizedgen 16032 upgr2wlkdc 16147 pwf1oexmid 16478 nnnninfen 16501 sbthom 16508 |
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