| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > 7cn | Structured version Visualization version GIF version | ||
| Description: The number 7 is a complex number. (Contributed by David A. Wheeler, 8-Dec-2018.) Reduce dependencies on axioms. (Revised by Steven Nguyen, 4-Oct-2022.) |
| Ref | Expression |
|---|---|
| 7cn | ⊢ 7 ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-7 12450 | . 2 ⊢ 7 = (6 + 1) | |
| 2 | 6cn 12474 | . . 3 ⊢ 6 ∈ ℂ | |
| 3 | ax-1cn 11297 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11354 | . 2 ⊢ (6 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2860 | 1 ⊢ 7 ∈ ℂ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2147 (class class class)co 7451 ℂcc 11237 1c1 11240 + caddc 11242 6c6 12441 7c7 12442 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 ax-1cn 11297 ax-addcl 11299 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-cleq 2755 df-clel 2839 df-2 12445 df-3 12446 df-4 12447 df-5 12448 df-6 12449 df-7 12450 |
| This theorem is used by: 8cn 12480 8m1e7 12515 7p2e9 12543 7p3e10 12934 7t2e14 12968 7t4e28 12970 7t7e49 12973 cos2bnd 16400 23prm 17341 83prm 17345 139prm 17346 163prm 17347 317prm 17348 631prm 17349 1259lem1 17353 1259lem2 17354 1259lem3 17355 1259lem4 17356 1259lem5 17357 1259prm 17358 2503lem1 17359 2503lem2 17360 2503lem3 17361 4001lem1 17363 4001lem4 17366 4001prm 17367 log2ublem3 27333 log2ub 27334 bclbnd 27664 bposlem8 27675 2lgslem3d 27783 ex-prmo 31117 hgt750lem 35391 hgt750lem2 35392 60lcm7e420 43326 3exp7 43369 3lexlogpow5ineq1 43370 aks4d1p1 43392 25or6to4 43522 1p8e9 43581 sq7 43619 235t711 43628 ex-decpmul 43629 3cubeslem3r 43963 fmtno5lem4 48914 257prm 48919 fmtno4nprmfac193 48932 fmtno5fac 48940 m3prm 48950 139prmALT 48954 127prm 48957 m7prm 48958 ppivalnn4 48985 2exp340mod341 49104 8exp8mod9 49107 |
| Copyright terms: Public domain | W3C validator |