Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > eqeltri | GIF version |
Description: Substitution of equal classes into membership relation. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
eqeltr.1 | ⊢ 𝐴 = 𝐵 |
eqeltr.2 | ⊢ 𝐵 ∈ 𝐶 |
Ref | Expression |
---|---|
eqeltri | ⊢ 𝐴 ∈ 𝐶 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqeltr.2 | . 2 ⊢ 𝐵 ∈ 𝐶 | |
2 | eqeltr.1 | . . 3 ⊢ 𝐴 = 𝐵 | |
3 | 2 | eleq1i 2203 | . 2 ⊢ (𝐴 ∈ 𝐶 ↔ 𝐵 ∈ 𝐶) |
4 | 1, 3 | mpbir 145 | 1 ⊢ 𝐴 ∈ 𝐶 |
Colors of variables: wff set class |
Syntax hints: = wceq 1331 ∈ wcel 1480 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1423 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-4 1487 ax-17 1506 ax-ial 1514 ax-ext 2119 |
This theorem depends on definitions: df-bi 116 df-cleq 2130 df-clel 2133 |
This theorem is referenced by: eqeltrri 2211 3eltr4i 2219 intab 3795 inex2 4058 vpwex 4098 ord3ex 4109 uniopel 4173 onsucelsucexmid 4440 nnpredcl 4531 elvvuni 4598 isarep2 5205 acexmidlemcase 5762 abrexex2 6015 oprabex 6019 oprabrexex2 6021 rdg0 6277 frecex 6284 1on 6313 2on 6315 3on 6317 4on 6318 1onn 6409 2onn 6410 3onn 6411 4onn 6412 mapsnf1o2 6583 exmidpw 6795 unfiexmid 6799 xpfi 6811 ssfirab 6815 fnfi 6818 iunfidisj 6827 fidcenumlemr 6836 sbthlemi10 6847 ctmlemr 6986 exmidonfinlem 7042 acfun 7056 exmidaclem 7057 ccfunen 7072 nqex 7164 nq0ex 7241 1pr 7355 ltexprlempr 7409 recexprlempr 7433 cauappcvgprlemcl 7454 caucvgprlemcl 7477 caucvgprprlemcl 7505 addvalex 7645 peano1nnnn 7653 peano2nnnn 7654 axcnex 7660 ax1cn 7662 ax1re 7663 pnfxr 7811 mnfxr 7815 inelr 8339 cju 8712 2re 8783 3re 8787 4re 8790 5re 8792 6re 8794 7re 8796 8re 8798 9re 8800 2nn 8874 3nn 8875 4nn 8876 5nn 8877 6nn 8878 7nn 8879 8nn 8880 9nn 8881 nn0ex 8976 nneoor 9146 zeo 9149 deccl 9189 decnncl 9194 numnncl2 9197 decnncl2 9198 numsucc 9214 numma2c 9220 numadd 9221 numaddc 9222 nummul1c 9223 nummul2c 9224 xnegcl 9608 xrex 9632 ioof 9747 uzennn 10202 seqex 10213 m1expcl2 10308 faccl 10474 facwordi 10479 faclbnd2 10481 bccl 10506 crre 10622 remim 10625 absval 10766 climle 11096 climcvg1nlem 11111 iserabs 11237 geo2lim 11278 prodfclim1 11306 ere 11365 ege2le3 11366 eftlub 11385 efsep 11386 tan0 11427 ef01bndlem 11452 nn0o 11593 ennnfonelemj0 11903 ennnfonelem0 11907 ndxarg 11971 ndxslid 11973 strndxid 11976 basendxnn 12003 strle1g 12038 2strbasg 12049 2stropg 12050 setsmsbasg 12637 cnbl0 12692 cnopncntop 12695 remet 12698 divcnap 12713 climcncf 12729 expcncf 12750 cnrehmeocntop 12751 sincn 12847 coscn 12848 bdinex2 13087 bj-inex 13094 peano3nninf 13190 nninfex 13194 isomninnlem 13214 cvgcmp2nlemabs 13216 trilpolemisumle 13220 |
Copyright terms: Public domain | W3C validator |