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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 2878 | . 2 ⊢ (⊤ → (𝑥 ∈ 𝐴 ↔ 𝜑)) |
| 4 | 3 | mptru 1549 | 1 ⊢ (𝑥 ∈ 𝐴 ↔ 𝜑) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 = wceq 1542 ⊤wtru 1543 ∈ wcel 2114 {cab 2715 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-12 2185 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 |
| This theorem is referenced by: eqabcri 2880 rabid 3422 csbcow 3866 csbco 3867 csbgfi 3871 csbnestgfw 4376 csbnestgf 4381 relopabi 5779 cnv0OLD 6106 funcnv3 6570 opabiota 6924 zfrep6 7909 frrlem2 8239 frrlem3 8240 frrlem4 8241 frrlem8 8245 fprresex 8262 tfrlem4 8320 tfrlem8 8325 tfrlem9 8326 ixpn0 8880 sbthlem1 9027 dffi3 9346 setinds 9670 1idpr 10952 ltexprlem1 10959 ltexprlem2 10960 ltexprlem3 10961 ltexprlem4 10962 ltexprlem6 10964 ltexprlem7 10965 reclem2pr 10971 reclem3pr 10972 reclem4pr 10973 supsrlem 11034 dissnref 23484 dissnlocfin 23485 txbas 23523 xkoccn 23575 xkoptsub 23610 xkoco1cn 23613 xkoco2cn 23614 xkoinjcn 23643 mbfi1fseqlem4 25687 avril1 30550 rnmposs 32762 bnj1436 35014 bnj916 35108 bnj983 35126 bnj1083 35153 bnj1245 35189 bnj1311 35199 bnj1371 35204 bnj1398 35209 tz9.1regs 35309 bj-elsngl 37213 bj-projun 37239 bj-projval 37241 f1omptsnlem 37588 icoreresf 37604 finxp0 37643 finxp1o 37644 finxpsuclem 37649 sdclem1 37991 csbcom2fi 38376 ralrnmo 38609 raldmqsmo 38611 rr-grothshortbi 44656 modelaxreplem3 45333 |
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