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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 2881 | . 2 ⊢ (⊤ → (𝑥 ∈ 𝐴 ↔ 𝜑)) |
| 4 | 3 | mptru 1554 | 1 ⊢ (𝑥 ∈ 𝐴 ↔ 𝜑) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 207 = wceq 1547 ⊤wtru 1548 ∈ wcel 2119 {cab 2718 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-12 2189 ax-ext 2712 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-tru 1550 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 |
| This theorem is referenced by: eqabcri 2883 rabid 3413 csbcow 3853 csbco 3854 csbgfi 3858 csbnestgfw 4357 csbnestgf 4362 relopabi 5772 cnv0OLD 6098 funcnv3 6562 opabiota 6916 zfrep6OLD 7904 frrlem2 8234 frrlem3 8235 frrlem4 8236 frrlem8 8240 fprresex 8257 tfrlem4 8315 tfrlem8 8320 tfrlem9 8321 ixpn0 8875 sbthlem1 9022 dffi3 9341 setinds 9668 1idpr 10950 ltexprlem1 10957 ltexprlem2 10958 ltexprlem3 10959 ltexprlem4 10960 ltexprlem6 10962 ltexprlem7 10963 reclem2pr 10969 reclem3pr 10970 reclem4pr 10971 supsrlem 11032 dissnref 23518 dissnlocfin 23519 txbas 23557 xkoccn 23609 xkoptsub 23644 xkoco1cn 23647 xkoco2cn 23648 xkoinjcn 23677 mbfi1fseqlem4 25710 avril1 30558 rnmposs 32772 bnj1436 35028 bnj916 35122 bnj983 35140 bnj1083 35167 bnj1245 35203 bnj1311 35213 bnj1371 35218 bnj1398 35223 tz9.1regs 35322 bj-elsngl 37328 bj-projun 37354 bj-projval 37356 f1omptsnlem 37705 icoreresf 37721 finxp0 37760 finxp1o 37761 finxpsuclem 37766 sdclem1 38117 csbcom2fi 38502 ralrnmo 38735 raldmqsmo 38737 rr-grothshortbi 44754 modelaxreplem3 45431 |
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