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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 2903 | . 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 2740 |
| 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 2215 ax-ext 2734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 |
| This theorem is used by: eqabcri 2905 rabid 3435 csbcow 3865 csbco 3866 csbgfi 3870 csbnestgfw 4383 csbnestgf 4388 relopabi 5807 cnv0OLD 5868 funcnv3 6607 opabiota 6964 zfrep6OLD 7956 frrlem2 8290 frrlem3 8291 frrlem4 8292 frrlem8 8296 fprresex 8313 tfrlem4 8371 tfrlem8 8377 tfrlem9 8378 ixpn0 8941 sbthlem1 9089 dffi3 9405 setinds 9732 1idpr 11042 ltexprlem1 11049 ltexprlem2 11050 ltexprlem3 11051 ltexprlem4 11052 ltexprlem6 11054 ltexprlem7 11055 reclem2pr 11061 reclem3pr 11062 reclem4pr 11063 supsrlem 11124 dissnref 23760 dissnlocfin 23761 txbas 23799 xkoccn 23851 xkoptsub 23886 xkoco1cn 23889 xkoco2cn 23890 xkoinjcn 23919 mbfi1fseqlem4 25952 avril1 30951 rnmposs 33154 bnj1436 35356 bnj916 35450 bnj983 35468 bnj1083 35495 bnj1245 35531 bnj1311 35541 bnj1371 35546 bnj1398 35551 tz9.1regs 35668 bj-elsngl 37720 bj-projun 37746 bj-projval 37748 f1omptsnlem 38098 icoreresf 38114 finxp0 38153 finxp1o 38154 finxpsuclem 38159 sdclem1 38501 csbcom2fi 38884 ralrnmo 39117 raldmqsmo 39119 rr-grothshortbi 45135 modelaxreplem3 45811 |
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