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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 12208 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7369 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12230 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11084 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11142 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2762 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12211 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7368 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2762 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12212 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2762 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 (class class class)co 7358 1c1 11027 + caddc 11029 2c2 12200 4c4 12202 5c5 12203 6c6 12204 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 ax-1cn 11084 ax-addcl 11086 ax-addass 11091 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-iota 6448 df-fv 6500 df-ov 7361 df-2 12208 df-3 12209 df-4 12210 df-5 12211 df-6 12212 |
| This theorem is referenced by: 4p3e7 12294 div4p1lem1div2 12396 4t4e16 12706 6gcd4e2 16465 2exp16 17018 163prm 17052 631prm 17054 1259lem4 17061 2503lem2 17065 2503lem3 17066 4001lem1 17068 4001lem2 17069 4001lem4 17071 bposlem9 27259 hgt750lem2 34809 3exp7 42307 3lexlogpow5ineq1 42308 aks4d1p1p5 42329 235t711 42560 ex-decpmul 42561 3cubeslem3r 42929 lhe4.4ex1a 44570 ceil5half3 47586 fmtno4prmfac 47818 fmtno5faclem1 47825 gbowgt5 48008 mogoldbb 48031 |
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