| 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 12226 | . 2 ⊢ 8 = (7 + 1) | |
| 2 | 7cn 12251 | . . 3 ⊢ 7 ∈ ℂ | |
| 3 | ax-1cn 11096 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11150 | . 2 ⊢ (7 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2833 | 1 ⊢ 8 ∈ ℂ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2114 (class class class)co 7368 ℂcc 11036 1c1 11039 + caddc 11041 7c7 12217 8c8 12218 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-1cn 11096 ax-addcl 11098 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2729 df-clel 2812 df-2 12220 df-3 12221 df-4 12222 df-5 12223 df-6 12224 df-7 12225 df-8 12226 |
| This theorem is referenced by: 9cn 12257 9m1e8 12286 8p2e10 12699 8t2e16 12734 8t5e40 12737 cos2bnd 16125 2exp11 17029 2exp16 17030 139prm 17063 163prm 17064 317prm 17065 631prm 17066 1259lem2 17071 1259lem3 17072 1259lem4 17073 1259lem5 17074 2503lem2 17077 2503lem3 17078 2503prm 17079 4001lem1 17080 4001lem2 17081 4001prm 17084 quart1cl 26835 quart1lem 26836 quart1 26837 quartlem1 26838 log2tlbnd 26926 log2ublem3 26929 log2ub 26930 bposlem8 27273 lgsdir2lem1 27307 lgsdir2lem5 27311 2lgslem3a 27378 2lgslem3b 27379 2lgslem3c 27380 2lgslem3d 27381 2lgslem3a1 27382 2lgslem3b1 27383 2lgslem3c1 27384 2lgslem3d1 27385 2lgsoddprmlem1 27390 2lgsoddprmlem2 27391 2lgsoddprmlem3a 27392 2lgsoddprmlem3b 27393 2lgsoddprmlem3c 27394 2lgsoddprmlem3d 27395 ex-exp 30541 hgt750lem2 34834 420lcm8e840 42385 3exp7 42427 3lexlogpow5ineq1 42428 3lexlogpow5ineq5 42434 aks4d1p1 42450 sq8 42671 ex-decpmul 42680 resqrtvalex 44005 imsqrtvalex 44006 fmtno5lem4 47920 257prm 47925 fmtnoprmfac2lem1 47930 fmtno4prmfac 47936 fmtno4nprmfac193 47938 fmtno5faclem3 47945 m3prm 47956 139prmALT 47960 127prm 47963 m7prm 47964 5tcu2e40 47979 2exp340mod341 48097 8exp8mod9 48100 nfermltl8rev 48106 evengpop3 48162 tgoldbachlt 48180 |
| Copyright terms: Public domain | W3C validator |