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| Mirrors > Home > MPE Home > Th. List > eqabri | Structured version Visualization version GIF version | ||
| Description: Equality of a class variable and a class abstraction (inference form). (Contributed by NM, 3-Apr-1996.) (Proof shortened by Wolf Lammen, 15-Nov-2019.) |
| Ref | Expression |
|---|---|
| eqabri.1 | ⊢ 𝐴 = {𝑥 ∣ 𝜑} |
| Ref | Expression |
|---|---|
| eqabri | ⊢ (𝑥 ∈ 𝐴 ↔ 𝜑) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqabri.1 | . . . 4 ⊢ 𝐴 = {𝑥 ∣ 𝜑} | |
| 2 | 1 | a1i 11 | . . 3 ⊢ (⊤ → 𝐴 = {𝑥 ∣ 𝜑}) |
| 3 | 2 | eqabrd 2902 | . 2 ⊢ (⊤ → (𝑥 ∈ 𝐴 ↔ 𝜑)) |
| 4 | 3 | mptru 1577 | 1 ⊢ (𝑥 ∈ 𝐴 ↔ 𝜑) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 = wceq 1570 ⊤wtru 1571 ∈ wcel 2145 {cab 2739 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-12 2213 ax-ext 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2740 df-cleq 2753 df-clel 2836 |
| This theorem is used by: eqabcri 2904 rabid 3433 csbcow 3862 csbco 3863 csbgfi 3867 csbnestgfw 4380 csbnestgf 4385 relopabi 5800 cnv0OLD 5862 funcnv3 6602 opabiota 6959 zfrep6OLD 7956 frrlem2 8289 frrlem3 8290 frrlem4 8291 frrlem8 8295 fprresex 8312 tfrlem4 8370 tfrlem8 8376 tfrlem9 8377 ixpn0 8942 sbthlem1 9090 dffi3 9407 setinds 9734 1idpr 11095 ltexprlem1 11102 ltexprlem2 11103 ltexprlem3 11104 ltexprlem4 11105 ltexprlem6 11107 ltexprlem7 11108 reclem2pr 11114 reclem3pr 11115 reclem4pr 11116 supsrlem 11177 dissnref 23827 dissnlocfin 23828 txbas 23866 xkoccn 23918 xkoptsub 23953 xkoco1cn 23956 xkoco2cn 23957 xkoinjcn 23986 mbfi1fseqlem4 26019 avril1 31046 rnmposs 33249 bnj1436 35452 bnj916 35546 bnj983 35564 bnj1083 35591 bnj1245 35627 bnj1311 35637 bnj1371 35642 bnj1398 35647 tz9.1regs 35775 bj-elsngl 37851 bj-projun 37877 bj-projval 37879 f1omptsnlem 38227 icoreresf 38243 finxp0 38282 finxp1o 38283 finxpsuclem 38288 dfproplem 38609 sdclem1 38645 csbcom2fi 39028 ralrnmo 39261 raldmqsmo 39263 rr-grothshortbi 45246 modelaxreplem3 45922 |
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