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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 12244 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7378 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12266 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11096 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11155 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2762 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12247 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7377 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2762 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12248 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2762 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 (class class class)co 7367 1c1 11039 + caddc 11041 2c2 12236 4c4 12238 5c5 12239 6c6 12240 |
| 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 2708 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 2715 df-cleq 2728 df-clel 2811 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-iota 6454 df-fv 6506 df-ov 7370 df-2 12244 df-3 12245 df-4 12246 df-5 12247 df-6 12248 |
| This theorem is referenced by: 4p3e7 12330 div4p1lem1div2 12432 4t4e16 12743 6gcd4e2 16507 2exp16 17061 163prm 17095 631prm 17097 1259lem4 17104 2503lem2 17108 2503lem3 17109 4001lem1 17111 4001lem2 17112 4001lem4 17114 bposlem9 27255 hgt750lem2 34796 3exp7 42492 3lexlogpow5ineq1 42493 aks4d1p1p5 42514 235t711 42737 ex-decpmul 42738 3cubeslem3r 43119 lhe4.4ex1a 44756 ceil5half3 47794 fmtno4prmfac 48035 fmtno5faclem1 48042 gbowgt5 48238 mogoldbb 48261 |
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