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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 12405 | . . . . 5 ⊢ 2 = (1 + 1) | |
| 2 | 1 | oveq2i 7431 | . . . 4 ⊢ (4 + 2) = (4 + (1 + 1)) |
| 3 | 4cn 12428 | . . . . 5 ⊢ 4 ∈ ℂ | |
| 4 | ax-1cn 11258 | . . . . 5 ⊢ 1 ∈ ℂ | |
| 5 | 3, 4, 4 | addassi 11319 | . . . 4 ⊢ ((4 + 1) + 1) = (4 + (1 + 1)) |
| 6 | 2, 5 | eqtr4i 2787 | . . 3 ⊢ (4 + 2) = ((4 + 1) + 1) |
| 7 | df-5 12408 | . . . 4 ⊢ 5 = (4 + 1) | |
| 8 | 7 | oveq1i 7430 | . . 3 ⊢ (5 + 1) = ((4 + 1) + 1) |
| 9 | 6, 8 | eqtr4i 2787 | . 2 ⊢ (4 + 2) = (5 + 1) |
| 10 | df-6 12409 | . 2 ⊢ 6 = (5 + 1) | |
| 11 | 9, 10 | eqtr4i 2787 | 1 ⊢ (4 + 2) = 6 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 (class class class)co 7420 1c1 11201 + caddc 11203 2c2 12397 4c4 12399 5c5 12400 6c6 12401 |
| 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 2733 ax-1cn 11258 ax-addcl 11260 ax-addass 11265 |
| 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 2740 df-cleq 2753 df-clel 2836 df-rab 3414 df-v 3453 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 6494 df-fv 6546 df-ov 7423 df-2 12405 df-3 12406 df-4 12407 df-5 12408 df-6 12409 |
| This theorem is used by: 4p3e7 12496 div4p1lem1div2 12601 4t4e16 12918 6gcd4e2 16711 2exp16 17268 163prm 17303 631prm 17305 1259lem4 17312 2503lem2 17316 2503lem3 17317 4001lem1 17319 4001lem2 17320 4001lem4 17322 bposlem9 27619 hgt750lem2 35281 3exp7 43103 3lexlogpow5ineq1 43104 aks4d1p1p5 43125 4p4e8ALT 43309 2p4e6 43317 235t711 43362 ex-decpmul 43363 3cubeslem3r 43697 lhe4.4ex1a 45312 ceil5half3 48415 fmtno4prmfac 48656 fmtno5faclem1 48663 gbowgt5 48859 mogoldbb 48882 |
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