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| Mirrors > Home > MPE Home > Th. List > 5cn | Structured version Visualization version GIF version | ||
| Description: The number 5 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 |
|---|---|
| 5cn | ⊢ 5 ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-5 12183 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4cn 12202 | . . 3 ⊢ 4 ∈ ℂ | |
| 3 | ax-1cn 11056 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11110 | . 2 ⊢ (4 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2825 | 1 ⊢ 5 ∈ ℂ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2110 (class class class)co 7341 ℂcc 10996 1c1 10999 + caddc 11001 4c4 12174 5c5 12175 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2112 ax-9 2120 ax-ext 2702 ax-1cn 11056 ax-addcl 11058 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-cleq 2722 df-clel 2804 df-2 12180 df-3 12181 df-4 12182 df-5 12183 |
| This theorem is referenced by: 6cn 12208 6m1e5 12243 5p2e7 12268 5p3e8 12269 5p4e9 12270 5p5e10 12651 5t2e10 12680 5recm6rec 12723 bpoly4 15958 ef01bndlem 16085 5ndvds3 16316 5ndvds6 16317 dec5dvds 16968 dec5nprm 16970 2exp11 16993 2exp16 16994 prmlem1 17011 17prm 17020 139prm 17027 163prm 17028 317prm 17029 631prm 17030 1259lem1 17034 1259lem2 17035 1259lem3 17036 1259lem4 17037 2503lem1 17040 2503lem2 17041 2503lem3 17042 4001lem1 17044 4001lem2 17045 4001lem3 17046 4001lem4 17047 4001prm 17048 log2ublem3 26878 log2ub 26879 ppiub 27135 bclbnd 27211 bposlem4 27218 bposlem5 27219 bposlem6 27220 bposlem8 27222 bposlem9 27223 lgsdir2lem1 27256 2lgslem3c 27329 2lgsoddprmlem3d 27344 ex-fac 30421 fib6 34409 hgt750lem2 34655 12lcm5e60 42020 lcmineqlem23 42063 3lexlogpow5ineq1 42066 3lexlogpow5ineq5 42072 aks4d1p1p4 42083 aks4d1p1p6 42085 aks4d1p1p7 42086 sqn5i 42297 4t5e20 42303 sq5 42306 235t711 42317 ex-decpmul 42318 inductionexd 44167 ceil5half3 47350 fmtno5lem1 47563 fmtno5lem2 47564 257prm 47571 fmtno4prmfac193 47583 fmtno4nprmfac193 47584 flsqrt5 47604 139prmALT 47606 127prm 47609 5tcu2e40 47625 41prothprmlem2 47628 41prothprm 47629 2exp340mod341 47743 gbpart8 47778 gpg5order 48070 linevalexample 48406 ackval3012 48703 5m4e1 49808 |
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