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| Mirrors > Home > ILE Home > Th. List > 4t2e8 | GIF version | ||
| Description: 4 times 2 equals 8. (Contributed by NM, 2-Aug-2004.) |
| Ref | Expression |
|---|---|
| 4t2e8 | ⊢ (4 · 2) = 8 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 4cn 9199 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9252 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9267 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2250 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1395 (class class class)co 6007 + caddc 8013 · cmul 8015 2c2 9172 4c4 9174 8c8 9178 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-resscn 8102 ax-1cn 8103 ax-1re 8104 ax-icn 8105 ax-addcl 8106 ax-addrcl 8107 ax-mulcl 8108 ax-mulcom 8111 ax-addass 8112 ax-mulass 8113 ax-distr 8114 ax-1rid 8117 ax-cnre 8121 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-br 4084 df-iota 5278 df-fv 5326 df-ov 6010 df-2 9180 df-3 9181 df-4 9182 df-5 9183 df-6 9184 df-7 9185 df-8 9186 |
| This theorem is referenced by: 8th4div3 9341 4t3e12 9686 sq4e2t8 10871 cu2 10872 sqoddm1div8 10927 cos2bnd 12286 2exp7 12972 2exp8 12973 lgsdir2lem2 15723 2lgslem3a 15787 2lgslem3b 15788 2lgslem3c 15789 2lgslem3d 15790 2lgsoddprmlem2 15800 2lgsoddprmlem3c 15803 2lgsoddprmlem3d 15804 ex-exp 16146 |
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