| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 5800 | . 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 207 = wceq 1547 ∈ wcel 2119 Vcvv 3432 class class class wbr 5079 I cid 5519 |
| 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-ext 2712 ax-sep 5225 ax-pr 5369 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-sn 4563 df-pr 4565 df-op 4569 df-br 5080 df-opab 5142 df-id 5520 df-xp 5631 df-rel 5632 |
| This theorem is referenced by: dmi 5870 resieq 5949 iss 5994 elidinxp 6003 restidsing 6012 imai 6033 intasym 6072 asymref 6073 intirr 6075 poirr2 6081 cnvi 6099 xpdifid 6126 coi1 6221 dfpo2 6254 dffun2 6502 dffv2 6929 isof1oidb 7275 idssen 8941 dflt2 13097 relexpindlem 15023 ex-chn1 18601 opsrtoslem2 22039 hausdiag 23635 hauseqlcld 23636 metustid 24544 ltgov 28690 ex-id 30529 dfso2 35990 idsset 36123 dfon3 36125 elfix 36136 dffix2 36138 sscoid 36146 dffun10 36147 elfuns 36148 brsingle 36150 brapply 36171 lemsuccf 36174 dfrdg4 36186 bj-imdiridlem 37552 iss2 38718 undmrnresiss 44055 dffrege99 44413 ipo0 44899 ifr0 44900 fourierdlem42 46599 |
| Copyright terms: Public domain | W3C validator |