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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 12297 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4cn 12317 | . . 3 ⊢ 4 ∈ ℂ | |
| 3 | ax-1cn 11146 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11203 | . 2 ⊢ (4 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2861 | 1 ⊢ 5 ∈ ℂ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2145 (class class class)co 7400 ℂcc 11086 1c1 11089 + caddc 11091 4c4 12288 5c5 12289 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 ax-1cn 11146 ax-addcl 11148 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-ex 1803 df-cleq 2757 df-clel 2840 df-2 12294 df-3 12295 df-4 12296 df-5 12297 |
| This theorem is referenced by: 6cn 12323 6m1e5 12362 5p2e7 12387 5p3e8 12388 5p4e9 12389 5p5e10 12778 5t2e10 12807 5recm6rec 12852 bpoly4 16103 ef01bndlem 16230 5ndvds3 16461 5ndvds6 16462 dec5dvds 17114 dec5nprm 17116 2exp11 17139 2exp16 17140 prmlem1 17157 17prm 17167 139prm 17174 163prm 17175 317prm 17176 631prm 17177 1259lem1 17181 1259lem2 17182 1259lem3 17183 1259lem4 17184 2503lem1 17187 2503lem2 17188 2503lem3 17189 4001lem1 17191 4001lem2 17192 4001lem3 17193 4001lem4 17194 4001prm 17195 log2ublem3 27071 log2ub 27072 ppiub 27326 bclbnd 27402 bposlem4 27409 bposlem5 27410 bposlem6 27411 bposlem8 27413 bposlem9 27414 lgsdir2lem1 27447 2lgslem3c 27520 2lgsoddprmlem3d 27535 ex-fac 30711 fib6 34713 hgt750lem2 34956 12lcm5e60 42637 lcmineqlem23 42680 3lexlogpow5ineq1 42683 3lexlogpow5ineq5 42689 aks4d1p1p4 42700 aks4d1p1p6 42702 aks4d1p1p7 42703 sqn5i 42906 4t5e20 42912 sq5 42915 235t711 42926 ex-decpmul 42927 inductionexd 44743 cos5t 47471 goldrasin 47474 goldracos5teq 47477 goldratmolem2 47478 ceil5half3 47938 fmtno5lem1 48160 fmtno5lem2 48161 257prm 48168 fmtno4prmfac193 48180 fmtno4nprmfac193 48181 flsqrt5 48201 139prmALT 48203 127prm 48206 5tcu2e40 48222 41prothprmlem2 48225 41prothprm 48226 2exp340mod341 48353 gbpart8 48388 gpg5order 48680 linevalexample 49026 ackval3012 49323 5m4e1 50426 |
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