| 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 206 = wceq 1541 ∈ wcel 2113 Vcvv 3440 class class class wbr 5098 I cid 5518 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-id 5519 df-xp 5630 df-rel 5631 |
| 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 7270 idssen 8934 dflt2 13062 relexpindlem 14986 ex-chn1 18560 opsrtoslem2 22011 hausdiag 23589 hauseqlcld 23590 metustid 24498 ltgov 28669 ex-id 30509 dfso2 35949 idsset 36082 dfon3 36084 elfix 36095 dffix2 36097 sscoid 36105 dffun10 36106 elfuns 36107 brsingle 36109 brapply 36130 lemsuccf 36133 dfrdg4 36145 bj-imdiridlem 37386 iss2 38533 undmrnresiss 43841 dffrege99 44199 ipo0 44685 ifr0 44686 fourierdlem42 46389 |
| Copyright terms: Public domain | W3C validator |