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Mirrors > Home > ILE Home > Th. List > mulid2 | Unicode version |
Description: Identity law for multiplication. Note: see mulid1 7787 for commuted version. (Contributed by NM, 8-Oct-1999.) |
Ref | Expression |
---|---|
mulid2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-1cn 7737 |
. . 3
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2 | mulcom 7773 |
. . 3
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3 | 1, 2 | mpan 421 |
. 2
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4 | mulid1 7787 |
. 2
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5 | 3, 4 | eqtrd 2173 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() |
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-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-resscn 7736 ax-1cn 7737 ax-icn 7739 ax-addcl 7740 ax-mulcl 7742 ax-mulcom 7745 ax-mulass 7747 ax-distr 7748 ax-1rid 7751 ax-cnre 7755 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ral 2422 df-rex 2423 df-v 2691 df-un 3080 df-in 3082 df-ss 3089 df-sn 3538 df-pr 3539 df-op 3541 df-uni 3745 df-br 3938 df-iota 5096 df-fv 5139 df-ov 5785 |
This theorem is referenced by: mulid2i 7793 mulid2d 7808 muladd11 7919 1p1times 7920 mulm1 8186 div1 8487 recdivap 8502 divdivap2 8508 conjmulap 8513 expp1 10331 recan 10913 arisum 11299 geo2sum 11315 prodrbdclem 11372 prodmodclem2a 11377 demoivreALT 11516 gcdadd 11709 gcdid 11710 |
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