| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > 8cn | Structured version Visualization version GIF version | ||
| Description: The number 8 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 |
|---|---|
| 8cn | ⊢ 8 ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-8 12241 | . 2 ⊢ 8 = (7 + 1) | |
| 2 | 7cn 12266 | . . 3 ⊢ 7 ∈ ℂ | |
| 3 | ax-1cn 11087 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11142 | . 2 ⊢ (7 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2835 | 1 ⊢ 8 ∈ ℂ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2119 (class class class)co 7356 ℂcc 11027 1c1 11030 + caddc 11032 7c7 12232 8c8 12233 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 ax-1cn 11087 ax-addcl 11089 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-ex 1787 df-cleq 2731 df-clel 2814 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 |
| This theorem is referenced by: 9cn 12272 9m1e8 12301 8p2e10 12715 8t2e16 12750 8t5e40 12753 cos2bnd 16146 2exp11 17051 2exp16 17052 139prm 17085 163prm 17086 317prm 17087 631prm 17088 1259lem2 17093 1259lem3 17094 1259lem4 17095 1259lem5 17096 2503lem2 17099 2503lem3 17100 2503prm 17101 4001lem1 17102 4001lem2 17103 4001prm 17106 quart1cl 26836 quart1lem 26837 quart1 26838 quartlem1 26839 log2tlbnd 26927 log2ublem3 26930 log2ub 26931 bposlem8 27272 lgsdir2lem1 27306 lgsdir2lem5 27310 2lgslem3a 27377 2lgslem3b 27378 2lgslem3c 27379 2lgslem3d 27380 2lgslem3a1 27381 2lgslem3b1 27382 2lgslem3c1 27383 2lgslem3d1 27384 2lgsoddprmlem1 27389 2lgsoddprmlem2 27390 2lgsoddprmlem3a 27391 2lgsoddprmlem3b 27392 2lgsoddprmlem3c 27393 2lgsoddprmlem3d 27394 ex-exp 30538 hgt750lem2 34836 420lcm8e840 42496 3exp7 42538 3lexlogpow5ineq1 42539 3lexlogpow5ineq5 42545 aks4d1p1 42561 sq8 42774 ex-decpmul 42783 resqrtvalex 44089 imsqrtvalex 44090 sin5tlem4 47339 sin5tlem5 47340 fmtno5lem4 48034 257prm 48039 fmtnoprmfac2lem1 48044 fmtno4prmfac 48050 fmtno4nprmfac193 48052 fmtno5faclem3 48059 m3prm 48070 139prmALT 48074 127prm 48077 m7prm 48078 5tcu2e40 48093 2exp340mod341 48224 8exp8mod9 48227 nfermltl8rev 48233 evengpop3 48289 tgoldbachlt 48307 |
| Copyright terms: Public domain | W3C validator |