| 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 12319 | . 2 ⊢ 7 = (6 + 1) | |
| 2 | 6cn 12343 | . . 3 ⊢ 6 ∈ ℂ | |
| 3 | ax-1cn 11169 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11226 | . 2 ⊢ (6 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2861 | 1 ⊢ 7 ∈ ℂ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2146 (class class class)co 7416 ℂcc 11109 1c1 11112 + caddc 11114 6c6 12310 7c7 12311 |
| 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 2148 ax-9 2156 ax-ext 2737 ax-1cn 11169 ax-addcl 11171 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-cleq 2757 df-clel 2840 df-2 12314 df-3 12315 df-4 12316 df-5 12317 df-6 12318 df-7 12319 |
| This theorem is used by: 8cn 12349 8m1e7 12384 7p2e9 12412 7p3e10 12802 7t2e14 12836 7t4e28 12838 7t7e49 12841 cos2bnd 16261 23prm 17196 83prm 17200 139prm 17201 163prm 17202 317prm 17203 631prm 17204 1259lem1 17208 1259lem2 17209 1259lem3 17210 1259lem4 17211 1259lem5 17212 1259prm 17213 2503lem1 17214 2503lem2 17215 2503lem3 17216 4001lem1 17218 4001lem4 17221 4001prm 17222 log2ublem3 27142 log2ub 27143 bclbnd 27473 bposlem8 27484 2lgslem3d 27592 ex-prmo 30839 hgt750lem 35062 hgt750lem2 35063 60lcm7e420 42810 3exp7 42853 3lexlogpow5ineq1 42854 aks4d1p1 42876 25or6to4 43006 sq7 43090 235t711 43099 ex-decpmul 43100 3cubeslem3r 43451 fmtno5lem4 48341 257prm 48346 fmtno4nprmfac193 48359 fmtno5fac 48367 m3prm 48377 139prmALT 48381 127prm 48384 m7prm 48385 ppivalnn4 48412 2exp340mod341 48531 8exp8mod9 48534 |
| Copyright terms: Public domain | W3C validator |