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| Mirrors > Home > ILE Home > Th. List > ensymd | GIF version | ||
| Description: Symmetry of equinumerosity. Deduction form of ensym 7068. (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 7068 | . 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 4130 ≈ cen 7020 |
| 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 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 |
| 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 4131 df-opab 4193 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-fun 5379 df-fn 5380 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-er 6807 df-en 7023 |
| This theorem is used by: f1imaeng 7079 f1imaen2g 7080 en2sn 7102 xpdom3m 7132 phplem4 7156 phplem4dom 7163 php5dom 7164 phpm 7167 phplem4on 7169 dif1en 7183 dif1enen 7184 fisbth 7187 fin0 7189 fin0or 7190 fidcen 7203 fientri3 7222 unsnfidcex 7227 unsnfidcel 7228 fiintim 7238 fisseneq 7242 f1ofi 7257 fipwfi 7321 endjusym 7436 eninl 7437 eninr 7438 pm54.43 7536 djuen 7567 dju1en 7569 djuassen 7573 xpdjuen 7574 uzenom 10864 hashennnuni 11220 hashennn 11221 hashcl 11222 hashfz1 11224 hashen 11225 fihashfn 11242 fihashdom 11245 hashunlem 11246 sseqn 11281 hashf1lem2 11288 zfz1iso 11295 summodclem2 12151 zsumdc 12153 prodmodclem2 12346 zproddc 12348 4sqlem11 13182 ennnfonelemen 13314 exmidunben 13319 ctinfom 13321 ctinf 13323 gsumf1ofi 14162 isnzr2 14493 znfi 14992 znhash 14993 usgrsizedgen 16466 upgr2wlkdc 16630 eupthfi 16704 pwf1oexmid 17041 nnnninfen 17076 sbthom 17083 |
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