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| Description: Commutation is symmetric. Theorem 2(v) of [Kalmbach] p. 22. |
| Ref | Expression |
|---|---|
| cmcm |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq1 3542 |
. . 3
| |
| 2 | breq2 3543 |
. . 3
| |
| 3 | 1, 2 | bibi12d 385 |
. 2
|
| 4 | breq2 3543 |
. . 3
| |
| 5 | breq1 3542 |
. . 3
| |
| 6 | 4, 5 | bibi12d 385 |
. 2
|
| 7 | h0elch 11752 |
. . . 4
| |
| 8 | 7 | elimel 3251 |
. . 3
|
| 9 | 7 | elimel 3251 |
. . 3
|
| 10 | 8, 9 | cmcmi 12158 |
. 2
|
| 11 | 3, 6, 10 | dedth2h 3241 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: cmcm2 12182 fh2 12185 cm2j 12186 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-5 1619 ax-7 1621 ax-gen 1622 ax-8 1623 ax-9 1624 ax-10 1625 ax-11 1626 ax-12 1627 ax-13 1628 ax-14 1629 ax-17 1634 ax-4 1637 ax-5o 1639 ax-6o 1642 ax-9o 1792 ax-10o 1810 ax-16 1883 ax-11o 1893 ax-ext 2152 ax-rep 3628 ax-sep 3638 ax-nul 3645 ax-pow 3681 ax-pr 3719 ax-un 3961 ax-inf2 6008 ax-cc 6359 ax-ac 6385 ax-cnex 6885 ax-resscn 6886 ax-1cn 6887 ax-icn 6888 ax-addcl 6889 ax-addrcl 6890 ax-mulcl 6891 ax-mulrcl 6892 ax-mulcom 6893 ax-addass 6894 ax-mulass 6895 ax-distr 6896 ax-i2m1 6897 ax-1ne0 6898 ax-1rid 6899 ax-rnegex 6900 ax-rrecex 6901 ax-cnre 6902 ax-pre-lttri 6903 ax-pre-lttrn 6904 ax-pre-ltadd 6905 ax-pre-mulgt0 6906 ax-pre-sup 6907 ax-addopr 6908 ax-mulopr 6909 ax-hilex 11497 ax-hfvadd 11498 ax-hvcom 11499 ax-hvass 11500 ax-hv0cl 11501 ax-hvaddid 11502 ax-hfvmul 11503 ax-hvmulid 11504 ax-hvmulass 11505 ax-hvdistr1 11506 ax-hvdistr2 11507 ax-hvmul0 11508 ax-hfi 11574 ax-his1 11577 ax-his2 11578 ax-his3 11579 ax-his4 11580 ax-hcompl 11698 |
| This theorem depends on definitions: df-bi 232 df-or 434 df-an 435 df-3or 1131 df-3an 1132 df-ex 1645 df-sb 1845 df-eu 2070 df-mo 2071 df-clab 2158 df-cleq 2163 df-clel 2166 df-ne 2297 df-nel 2298 df-ral 2389 df-rex 2390 df-reu 2391 df-rab 2392 df-v 2571 df-sbc 2731 df-csb 2806 df-dif 2862 df-un 2864 df-in 2866 df-ss 2868 df-pss 2870 df-nul 3115 df-if 3213 df-pw 3261 df-sn 3274 df-pr 3275 df-tp 3277 df-op 3278 df-uni 3399 df-int 3433 df-iun 3470 df-iin 3471 df-br 3540 df-opab 3598 df-tr 3612 df-eprel 3776 df-id 3779 df-po 3784 df-so 3796 df-fr 3814 df-we 3830 df-ord 3846 df-on 3847 df-lim 3848 df-suc 3849 df-om 4118 df-xp 4165 df-rel 4166 df-cnv 4167 df-co 4168 df-dm 4169 df-rn 4170 df-res 4171 df-ima 4172 df-fun 4173 df-fn 4174 df-f 4175 df-f1 4176 df-fo 4177 df-f1o 4178 df-fv 4179 df-opr 5022 df-oprab 5023 df-mpt 5138 df-1st 5166 df-2nd 5167 df-iota 5259 df-rdg 5344 df-er 5519 df-map 5587 df-en 5631 df-dom 5632 df-sdom 5633 df-undef 5769 df-riota 5773 df-sup 5932 df-pnf 6948 df-mnf 6949 df-xr 6950 df-ltxr 6951 df-le 6952 df-sub 7111 df-neg 7113 df-div 7325 df-n 7543 df-2 7589 df-3 7590 df-4 7591 df-n0 7761 df-z 7798 df-q 7894 df-fl 7921 df-ioo 7986 df-uz 8046 df-fz 8113 df-seq1 8210 df-shft 8245 df-seqz 8267 df-exp 8312 df-sqr 8420 df-re 8501 df-im 8502 df-cj 8503 df-abs 8504 df-clim 8747 df-sum 8752 df-top 9842 df-bases 9844 df-topgen 9845 df-cld 9950 df-ntr 9951 df-cls 9952 df-cn 10046 df-cnp 10047 df-haus 10075 df-met 10086 df-bl 10088 df-opn 10089 df-lm 10216 df-grpo 10334 df-gid 10335 df-ginv 10336 df-gdiv 10337 df-ablo 10429 df-vc 10518 df-nv 10564 df-va 10567 df-ba 10568 df-sm 10569 df-0v 10570 df-vs 10571 df-nm 10572 df-ims 10573 df-ip 10710 df-ph 10836 df-hnorm 11465 df-hvsub 11468 df-hlim 11469 df-hcau 11470 df-sh 11703 df-ch 11717 df-oc 11749 df-ch0 11750 df-shsum 11898 df-chj 11900 df-cm 12149 |