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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 12239 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7370 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12261 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11092 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11151 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2767 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12242 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7369 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2767 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12243 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2767 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1548 (class class class)co 7359 1c1 11035 + caddc 11037 2c2 12231 4c4 12233 5c5 12234 6c6 12235 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-ext 2713 ax-1cn 11092 ax-addcl 11094 ax-addass 11099 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-sb 2075 df-clab 2720 df-cleq 2733 df-clel 2816 df-rab 3394 df-v 3435 df-dif 3887 df-un 3889 df-ss 3901 df-nul 4264 df-if 4457 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-br 5075 df-iota 6444 df-fv 6496 df-ov 7362 df-2 12239 df-3 12240 df-4 12241 df-5 12242 df-6 12243 |
| This theorem is referenced by: 4p3e7 12325 div4p1lem1div2 12427 4t4e16 12738 6gcd4e2 16502 2exp16 17056 163prm 17090 631prm 17092 1259lem4 17099 2503lem2 17103 2503lem3 17104 4001lem1 17106 4001lem2 17107 4001lem4 17109 bposlem9 27276 hgt750lem2 34846 3exp7 42551 3lexlogpow5ineq1 42552 aks4d1p1p5 42573 235t711 42795 ex-decpmul 42796 3cubeslem3r 43149 lhe4.4ex1a 44786 ceil5half3 47821 fmtno4prmfac 48062 fmtno5faclem1 48069 gbowgt5 48265 mogoldbb 48288 |
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