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Mirrors > Home > MPE Home > Th. List > eqsstrri | Structured version Visualization version GIF version |
Description: Substitution of equality into a subclass relationship. (Contributed by NM, 19-Oct-1999.) |
Ref | Expression |
---|---|
eqsstr3.1 | ⊢ 𝐵 = 𝐴 |
eqsstr3.2 | ⊢ 𝐵 ⊆ 𝐶 |
Ref | Expression |
---|---|
eqsstrri | ⊢ 𝐴 ⊆ 𝐶 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqsstr3.1 | . . 3 ⊢ 𝐵 = 𝐴 | |
2 | 1 | eqcomi 2830 | . 2 ⊢ 𝐴 = 𝐵 |
3 | eqsstr3.2 | . 2 ⊢ 𝐵 ⊆ 𝐶 | |
4 | 2, 3 | eqsstri 4001 | 1 ⊢ 𝐴 ⊆ 𝐶 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 ⊆ wss 3936 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2800 df-cleq 2814 df-clel 2893 df-in 3943 df-ss 3952 |
This theorem is referenced by: inss2 4206 dmv 5792 idssxp 5916 ofrfval 7417 ofval 7418 ofrval 7419 off 7424 ofres 7425 ofco 7429 dftpos4 7911 smores2 7991 onwf 9259 r0weon 9438 dju1dif 9598 unctb 9627 infmap2 9640 itunitc 9843 axcclem 9879 dfnn3 11652 cotr2 14337 ressbasss 16556 prdsle 16735 prdsless 16736 cntrss 18460 dprd2da 19164 opsrle 20256 indiscld 21699 leordtval2 21820 fiuncmp 22012 prdstopn 22236 ustneism 22832 itg1addlem4 24300 itg1addlem5 24301 tdeglem4 24654 aannenlem3 24919 efifo 25131 konigsbergssiedgw 28029 pjoml4i 29364 5oai 29438 3oai 29445 bdopssadj 29858 xrge00 30673 xrge0mulc1cn 31184 esumdivc 31342 rpsqrtcn 31864 subfacp1lem5 32431 filnetlem3 33728 filnetlem4 33729 mblfinlem4 34947 itg2gt0cn 34962 psubspset 36895 psubclsetN 37087 relexpaddss 40112 corcltrcl 40133 relopabVD 41284 cncfiooicc 42226 amgmwlem 44952 |
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