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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 12238 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7372 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12260 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11090 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11149 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2763 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12241 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7371 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2763 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12242 | . 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 7361 1c1 11033 + caddc 11035 2c2 12230 4c4 12232 5c5 12233 6c6 12234 |
| 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 11090 ax-addcl 11092 ax-addass 11097 |
| 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 3391 df-v 3432 df-dif 3893 df-un 3895 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-iota 6449 df-fv 6501 df-ov 7364 df-2 12238 df-3 12239 df-4 12240 df-5 12241 df-6 12242 |
| This theorem is referenced by: 4p3e7 12324 div4p1lem1div2 12426 4t4e16 12737 6gcd4e2 16501 2exp16 17055 163prm 17089 631prm 17091 1259lem4 17098 2503lem2 17102 2503lem3 17103 4001lem1 17105 4001lem2 17106 4001lem4 17108 bposlem9 27272 hgt750lem2 34815 3exp7 42509 3lexlogpow5ineq1 42510 aks4d1p1p5 42531 235t711 42754 ex-decpmul 42755 3cubeslem3r 43136 lhe4.4ex1a 44777 ceil5half3 47809 fmtno4prmfac 48050 fmtno5faclem1 48057 gbowgt5 48253 mogoldbb 48276 |
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