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| Mirrors > Home > ILE Home > Th. List > ensymd | GIF version | ||
| Description: Symmetry of equinumerosity. Deduction form of ensym 7073. (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 7073 | . 2 ⊢ (𝐴 ≈ 𝐵 → 𝐵 ≈ 𝐴) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → 𝐵 ≈ 𝐴) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 class class class wbr 4131 ≈ cen 7025 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-opab 4194 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 df-er 6811 df-en 7028 |
| This theorem is used by: f1imaeng 7084 f1imaen2g 7085 en2sn 7107 xpdom3m 7137 phplem4 7161 phplem4dom 7168 php5dom 7169 phpm 7172 phplem4on 7174 dif1en 7188 dif1enen 7189 fisbth 7192 fin0 7194 fin0or 7195 fidcen 7208 fientri3 7227 unsnfidcex 7232 unsnfidcel 7233 fiintim 7243 fisseneq 7247 f1ofi 7262 fipwfi 7328 endjusym 7443 eninl 7444 eninr 7445 pm54.43 7543 djuen 7574 dju1en 7576 djuassen 7580 xpdjuen 7581 uzenom 10884 hashennnuni 11241 hashennn 11242 hashcl 11243 hashfz1 11245 hashen 11246 fihashfn 11263 fihashdom 11266 hashunlem 11267 sseqn 11302 hashf1lem2 11309 zfz1iso 11316 summodclem2 12175 zsumdc 12177 prodmodclem2 12370 zproddc 12372 4sqlem11 13210 ennnfonelemen 13371 exmidunben 13376 ctinfom 13378 ctinf 13380 gsumf1ofi 14251 isnzr2 14601 znfi 15100 znhash 15101 usgrsizedgen 16671 upgr2wlkdc 16835 eupthfi 16909 pwf1oexmid 17246 nnnninfen 17282 sbthom 17289 |
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