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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 12280 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4cn 12300 | . . 3 ⊢ 4 ∈ ℂ | |
| 3 | ax-1cn 11128 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11185 | . 2 ⊢ (4 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2857 | 1 ⊢ 5 ∈ ℂ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2141 (class class class)co 7392 ℂcc 11068 1c1 11071 + caddc 11073 4c4 12271 5c5 12272 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 ax-1cn 11128 ax-addcl 11130 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-ex 1799 df-cleq 2753 df-clel 2836 df-2 12277 df-3 12278 df-4 12279 df-5 12280 |
| This theorem is referenced by: 6cn 12306 6m1e5 12345 5p2e7 12370 5p3e8 12371 5p4e9 12372 5p5e10 12761 5t2e10 12790 5recm6rec 12835 bpoly4 16072 ef01bndlem 16199 5ndvds3 16430 5ndvds6 16431 dec5dvds 17083 dec5nprm 17085 2exp11 17108 2exp16 17109 prmlem1 17126 17prm 17136 139prm 17143 163prm 17144 317prm 17145 631prm 17146 1259lem1 17150 1259lem2 17151 1259lem3 17152 1259lem4 17153 2503lem1 17156 2503lem2 17157 2503lem3 17158 4001lem1 17160 4001lem2 17161 4001lem3 17162 4001lem4 17163 4001prm 17164 log2ublem3 26990 log2ub 26991 ppiub 27245 bclbnd 27321 bposlem4 27328 bposlem5 27329 bposlem6 27330 bposlem8 27332 bposlem9 27333 lgsdir2lem1 27366 2lgslem3c 27439 2lgsoddprmlem3d 27454 ex-fac 30599 fib6 34664 hgt750lem2 34910 12lcm5e60 42589 lcmineqlem23 42632 3lexlogpow5ineq1 42635 3lexlogpow5ineq5 42641 aks4d1p1p4 42652 aks4d1p1p6 42654 aks4d1p1p7 42655 sqn5i 42858 4t5e20 42864 sq5 42867 235t711 42878 ex-decpmul 42879 inductionexd 44695 cos5t 47437 goldrasin 47440 goldracos5teq 47443 goldratmolem2 47444 ceil5half3 47904 fmtno5lem1 48126 fmtno5lem2 48127 257prm 48134 fmtno4prmfac193 48146 fmtno4nprmfac193 48147 flsqrt5 48167 139prmALT 48169 127prm 48172 5tcu2e40 48188 41prothprmlem2 48191 41prothprm 48192 2exp340mod341 48319 gbpart8 48354 gpg5order 48646 linevalexample 48981 ackval3012 49278 5m4e1 50382 |
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