| 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 9211 | . . 3 ⊢ 4 ∈ ℂ | |
| 2 | 1 | times2i 9264 | . 2 ⊢ (4 · 2) = (4 + 4) |
| 3 | 4p4e8 9279 | . 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 6013 + caddc 8025 · cmul 8027 2c2 9184 4c4 9186 8c8 9190 |
| 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 8114 ax-1cn 8115 ax-1re 8116 ax-icn 8117 ax-addcl 8118 ax-addrcl 8119 ax-mulcl 8120 ax-mulcom 8123 ax-addass 8124 ax-mulass 8125 ax-distr 8126 ax-1rid 8129 ax-cnre 8133 |
| 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 2802 df-un 3202 df-in 3204 df-ss 3211 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-iota 5284 df-fv 5332 df-ov 6016 df-2 9192 df-3 9193 df-4 9194 df-5 9195 df-6 9196 df-7 9197 df-8 9198 |
| This theorem is referenced by: 8th4div3 9353 4t3e12 9698 sq4e2t8 10889 cu2 10890 sqoddm1div8 10945 cos2bnd 12311 2exp7 12997 2exp8 12998 lgsdir2lem2 15748 2lgslem3a 15812 2lgslem3b 15813 2lgslem3c 15814 2lgslem3d 15815 2lgsoddprmlem2 15825 2lgsoddprmlem3c 15828 2lgsoddprmlem3d 15829 ex-exp 16259 |
| Copyright terms: Public domain | W3C validator |