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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 9220 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9273 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9288 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2252 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1397 (class class class)co 6017 + caddc 8034 · cmul 8036 2c2 9193 4c4 9195 8c8 9199 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-resscn 8123 ax-1cn 8124 ax-1re 8125 ax-icn 8126 ax-addcl 8127 ax-addrcl 8128 ax-mulcl 8129 ax-mulcom 8132 ax-addass 8133 ax-mulass 8134 ax-distr 8135 ax-1rid 8138 ax-cnre 8142 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-iota 5286 df-fv 5334 df-ov 6020 df-2 9201 df-3 9202 df-4 9203 df-5 9204 df-6 9205 df-7 9206 df-8 9207 |
| This theorem is referenced by: 8th4div3 9362 4t3e12 9707 sq4e2t8 10898 cu2 10899 sqoddm1div8 10954 cos2bnd 12320 2exp7 13006 2exp8 13007 lgsdir2lem2 15757 2lgslem3a 15821 2lgslem3b 15822 2lgslem3c 15823 2lgslem3d 15824 2lgsoddprmlem2 15834 2lgsoddprmlem3c 15837 2lgsoddprmlem3d 15838 ex-exp 16323 |
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