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| Mirrors > Home > ILE Home > Th. List > ensymd | GIF version | ||
| Description: Symmetry of equinumerosity. Deduction form of ensym 7020. (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 7020 | . 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 4108 ≈ cen 6972 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-sep 4227 ax-pow 4286 ax-pr 4321 ax-un 4553 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ral 2525 df-rex 2526 df-v 2814 df-un 3214 df-in 3216 df-ss 3223 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-br 4109 df-opab 4171 df-id 4413 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-rn 4759 df-res 4760 df-ima 4761 df-fun 5353 df-fn 5354 df-f 5355 df-f1 5356 df-fo 5357 df-f1o 5358 df-er 6766 df-en 6975 |
| This theorem is referenced by: f1imaeng 7031 f1imaen2g 7032 en2sn 7054 xpdom3m 7084 phplem4 7108 phplem4dom 7115 php5dom 7116 phpm 7119 phplem4on 7121 dif1en 7135 dif1enen 7136 fisbth 7139 fin0 7141 fin0or 7142 fidcen 7155 fientri3 7174 unsnfidcex 7179 unsnfidcel 7180 fiintim 7190 fisseneq 7194 f1ofi 7209 fipwfi 7271 endjusym 7386 eninl 7387 eninr 7388 pm54.43 7486 djuen 7517 dju1en 7519 djuassen 7523 xpdjuen 7524 uzenom 10783 hashennnuni 11137 hashennn 11138 hashcl 11139 hashfz1 11141 hashen 11142 fihashfn 11159 fihashdom 11162 hashunlem 11163 sseqn 11196 zfz1iso 11206 summodclem2 12061 zsumdc 12063 prodmodclem2 12256 zproddc 12258 4sqlem11 13092 ennnfonelemen 13161 exmidunben 13166 ctinfom 13168 ctinf 13170 isnzr2 14318 znfi 14790 znhash 14791 usgrsizedgen 16195 upgr2wlkdc 16359 eupthfi 16433 pwf1oexmid 16760 nnnninfen 16786 sbthom 16793 |
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