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| Mirrors > Home > MPE Home > Th. List > 4p2e6 | Structured version Visualization version GIF version | ||
| Description: 4 + 2 = 6. (Contributed by NM, 11-May-2004.) |
| Ref | Expression |
|---|---|
| 4p2e6 | ⊢ (4 + 2) = 6 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-2 12220 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7379 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12242 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11096 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11154 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2763 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12223 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7378 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2763 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12224 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2763 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 (class class class)co 7368 1c1 11039 + caddc 11041 2c2 12212 4c4 12214 5c5 12215 6c6 12216 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-1cn 11096 ax-addcl 11098 ax-addass 11103 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-iota 6456 df-fv 6508 df-ov 7371 df-2 12220 df-3 12221 df-4 12222 df-5 12223 df-6 12224 |
| This theorem is referenced by: 4p3e7 12306 div4p1lem1div2 12408 4t4e16 12718 6gcd4e2 16477 2exp16 17030 163prm 17064 631prm 17066 1259lem4 17073 2503lem2 17077 2503lem3 17078 4001lem1 17080 4001lem2 17081 4001lem4 17083 bposlem9 27271 hgt750lem2 34830 3exp7 42423 3lexlogpow5ineq1 42424 aks4d1p1p5 42445 235t711 42675 ex-decpmul 42676 3cubeslem3r 43044 lhe4.4ex1a 44685 ceil5half3 47700 fmtno4prmfac 47932 fmtno5faclem1 47939 gbowgt5 48122 mogoldbb 48145 |
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