| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 9134 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9187 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9202 | . 2 ⊢ (4 + 4) = 8 | |
| 4 | 2, 3 | eqtri 2227 | 1 ⊢ (4 · 2) = 8 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1373 (class class class)co 5957 + caddc 7948 · cmul 7950 2c2 9107 4c4 9109 8c8 9113 |
| 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 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-ext 2188 ax-resscn 8037 ax-1cn 8038 ax-1re 8039 ax-icn 8040 ax-addcl 8041 ax-addrcl 8042 ax-mulcl 8043 ax-mulcom 8046 ax-addass 8047 ax-mulass 8048 ax-distr 8049 ax-1rid 8052 ax-cnre 8056 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ral 2490 df-rex 2491 df-v 2775 df-un 3174 df-in 3176 df-ss 3183 df-sn 3644 df-pr 3645 df-op 3647 df-uni 3857 df-br 4052 df-iota 5241 df-fv 5288 df-ov 5960 df-2 9115 df-3 9116 df-4 9117 df-5 9118 df-6 9119 df-7 9120 df-8 9121 |
| This theorem is referenced by: 8th4div3 9276 4t3e12 9621 sq4e2t8 10804 cu2 10805 sqoddm1div8 10860 cos2bnd 12146 2exp7 12832 2exp8 12833 lgsdir2lem2 15581 2lgslem3a 15645 2lgslem3b 15646 2lgslem3c 15647 2lgslem3d 15648 2lgsoddprmlem2 15658 2lgsoddprmlem3c 15661 2lgsoddprmlem3d 15662 ex-exp 15802 |
| Copyright terms: Public domain | W3C validator |