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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 12328 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7425 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12351 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11183 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11244 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2786 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12331 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7424 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2786 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12332 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2786 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7414 1c1 11126 + caddc 11128 2c2 12320 4c4 12322 5c5 12323 6c6 12324 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 ax-1cn 11183 ax-addcl 11185 ax-addass 11190 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-iota 6489 df-fv 6541 df-ov 7417 df-2 12328 df-3 12329 df-4 12330 df-5 12331 df-6 12332 |
| This theorem is used by: 4p3e7 12419 div4p1lem1div2 12524 4t4e16 12841 6gcd4e2 16629 2exp16 17183 163prm 17218 631prm 17220 1259lem4 17227 2503lem2 17231 2503lem3 17232 4001lem1 17234 4001lem2 17235 4001lem4 17237 bposlem9 27529 hgt750lem2 35161 3exp7 42920 3lexlogpow5ineq1 42921 aks4d1p1p5 42942 4p4e8ALT 43126 2p4e6 43134 235t711 43181 ex-decpmul 43182 3cubeslem3r 43533 lhe4.4ex1a 45154 ceil5half3 48235 fmtno4prmfac 48476 fmtno5faclem1 48483 gbowgt5 48679 mogoldbb 48702 |
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