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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 8931 | . . 3 ⊢ 4 ∈ ℂ | |
2 | 1 | times2i 8984 | . 2 ⊢ (4 · 2) = (4 + 4) |
3 | 4p4e8 8998 | . 2 ⊢ (4 + 4) = 8 | |
4 | 2, 3 | eqtri 2186 | 1 ⊢ (4 · 2) = 8 |
Colors of variables: wff set class |
Syntax hints: = wceq 1343 (class class class)co 5841 + caddc 7752 · cmul 7754 2c2 8904 4c4 8906 8c8 8910 |
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 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-ext 2147 ax-resscn 7841 ax-1cn 7842 ax-1re 7843 ax-icn 7844 ax-addcl 7845 ax-addrcl 7846 ax-mulcl 7847 ax-mulcom 7850 ax-addass 7851 ax-mulass 7852 ax-distr 7853 ax-1rid 7856 ax-cnre 7860 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-nf 1449 df-sb 1751 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2296 df-ral 2448 df-rex 2449 df-v 2727 df-un 3119 df-in 3121 df-ss 3128 df-sn 3581 df-pr 3582 df-op 3584 df-uni 3789 df-br 3982 df-iota 5152 df-fv 5195 df-ov 5844 df-2 8912 df-3 8913 df-4 8914 df-5 8915 df-6 8916 df-7 8917 df-8 8918 |
This theorem is referenced by: 8th4div3 9072 4t3e12 9415 sq4e2t8 10548 cu2 10549 sqoddm1div8 10604 cos2bnd 11697 lgsdir2lem2 13530 ex-exp 13568 |
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