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| Mirrors > Home > ILE Home > Th. List > sseqtrri | Unicode version | ||
| Description: Substitution of equality into a subclass relationship. (Contributed by NM, 4-Apr-1995.) |
| Ref | Expression |
|---|---|
| sseqtrri.1 |
|
| sseqtrri.2 |
|
| Ref | Expression |
|---|---|
| sseqtrri |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sseqtrri.1 |
. 2
| |
| 2 | sseqtrri.2 |
. . 3
| |
| 3 | 2 | eqcomi 2242 |
. 2
|
| 4 | 1, 3 | sseqtri 3282 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-in 3226 df-ss 3233 |
| This theorem is used by: eqimss2i 3305 difdif2ss 3488 snsspr1 3863 snsspr2 3864 snsstp1 3865 snsstp2 3866 snsstp3 3867 prsstp12 3868 prsstp13 3869 prsstp23 3870 iunxdif2 4061 pwpwssunieq 4101 sssucid 4562 opabssxp 4851 dmresi 5121 cnvimass 5153 ssrnres 5233 cnvcnv 5243 cnvssrndm 5312 dmmpossx 6439 tfrcllemssrecs 6627 sucinc 6722 mapex 6932 exmidpw 7219 exmidpweq 7220 casefun 7431 djufun 7450 pw1ne1 7594 ressxr 8375 ltrelxr 8392 nnssnn0 9577 un0addcl 9607 un0mulcl 9608 nn0ssxnn0 9644 fzssnn 10491 fzossnn0 10601 isumclim3 12215 isprm3 12921 phimullem 13032 ballotfilem7 13337 tgvalex 13676 eqgfval 14084 gsummptfidmsplit 14254 cnfldbas 15006 mpocnfldadd 15007 mpocnfldmul 15009 cnfldcj 15011 cnfldtset 15012 cnfldle 15013 cnfldds 15014 cnrest2 15462 qtopbasss 15747 tgqioo 15781 |
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