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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 9068 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9121 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9136 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2217 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1364 (class class class)co 5922 + caddc 7882 · cmul 7884 2c2 9041 4c4 9043 8c8 9047 |
| 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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-ext 2178 ax-resscn 7971 ax-1cn 7972 ax-1re 7973 ax-icn 7974 ax-addcl 7975 ax-addrcl 7976 ax-mulcl 7977 ax-mulcom 7980 ax-addass 7981 ax-mulass 7982 ax-distr 7983 ax-1rid 7986 ax-cnre 7990 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-v 2765 df-un 3161 df-in 3163 df-ss 3170 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-iota 5219 df-fv 5266 df-ov 5925 df-2 9049 df-3 9050 df-4 9051 df-5 9052 df-6 9053 df-7 9054 df-8 9055 |
| This theorem is referenced by: 8th4div3 9210 4t3e12 9554 sq4e2t8 10729 cu2 10730 sqoddm1div8 10785 cos2bnd 11925 2exp7 12603 2exp8 12604 lgsdir2lem2 15270 2lgslem3a 15334 2lgslem3b 15335 2lgslem3c 15336 2lgslem3d 15337 2lgsoddprmlem2 15347 2lgsoddprmlem3c 15350 2lgsoddprmlem3d 15351 ex-exp 15373 |
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