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| Mirrors > Home > MPE Home > Th. List > ideq | Structured version Visualization version GIF version | ||
| Description: For sets, the identity relation is the same as equality. (Contributed by NM, 13-Aug-1995.) |
| Ref | Expression |
|---|---|
| ideq.1 | ⊢ 𝐵 ∈ V |
| Ref | Expression |
|---|---|
| ideq | ⊢ (𝐴 I 𝐵 ↔ 𝐴 = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ideq.1 | . 2 ⊢ 𝐵 ∈ V | |
| 2 | ideqg 5821 | . 2 ⊢ (𝐵 ∈ V → (𝐴 I 𝐵 ↔ 𝐴 = 𝐵)) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐴 I 𝐵 ↔ 𝐴 = 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 208 = wceq 1559 ∈ wcel 2141 Vcvv 3453 class class class wbr 5099 I cid 5539 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 ax-sep 5245 ax-pr 5389 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4480 df-sn 4582 df-pr 4584 df-op 4588 df-br 5100 df-opab 5162 df-id 5540 df-xp 5651 df-rel 5652 |
| This theorem is referenced by: cnvi 5855 dmi 5895 resieq 5974 iss 6021 elidinxp 6030 restidsing 6039 imai 6060 intasym 6099 asymref 6100 intirr 6102 poirr2 6108 xpdifid 6150 coi1 6246 dfpo2 6279 dffun2 6527 dffv2 6958 isof1oidb 7304 idssen 8974 dflt2 13147 relexpindlem 15073 ex-chn1 18652 opsrtoslem2 22089 hausdiag 23685 hauseqlcld 23686 metustid 24594 ltgov 28743 ex-id 30582 dfso2 36069 idsset 36202 dfon3 36204 elfix 36215 dffix2 36217 sscoid 36225 dffun10 36226 elfuns 36227 brsingle 36229 brapply 36250 lemsuccf 36253 dfrdg4 36265 bj-imdiridlem 37641 iss2 38807 undmrnresiss 44144 dffrege99 44502 ipo0 44988 ifr0 44989 fourierdlem42 46687 |
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