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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 12334 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4cn 12354 | . . 3 ⊢ 4 ∈ ℂ | |
| 3 | ax-1cn 11186 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11243 | . 2 ⊢ (4 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2858 | 1 ⊢ 5 ∈ ℂ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2145 (class class class)co 7417 ℂcc 11126 1c1 11129 + caddc 11131 4c4 12325 5c5 12326 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2734 ax-1cn 11186 ax-addcl 11188 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-cleq 2754 df-clel 2837 df-2 12331 df-3 12332 df-4 12333 df-5 12334 |
| This theorem is used by: 6cn 12360 6m1e5 12399 5p2e7 12424 5p3e8 12425 5p4e9 12426 5p5e10 12816 5t2e10 12845 5recm6rec 12890 bpoly4 16151 ef01bndlem 16278 5ndvds3 16509 5ndvds6 16510 dec5dvds 17162 dec5nprm 17164 2exp11 17187 2exp16 17188 prmlem1 17205 17prm 17215 139prm 17222 163prm 17223 317prm 17224 631prm 17225 1259lem1 17229 1259lem2 17230 1259lem3 17231 1259lem4 17232 2503lem1 17235 2503lem2 17236 2503lem3 17237 4001lem1 17239 4001lem2 17240 4001lem3 17241 4001lem4 17242 4001prm 17243 log2ublem3 27193 log2ub 27194 ppiub 27448 bclbnd 27524 bposlem4 27531 bposlem5 27532 bposlem6 27533 bposlem8 27535 bposlem9 27536 lgsdir2lem1 27569 2lgslem3c 27642 2lgsoddprmlem3d 27657 ex-fac 30939 fib6 34925 hgt750lem2 35168 12lcm5e60 42882 lcmineqlem23 42925 3lexlogpow5ineq1 42928 3lexlogpow5ineq5 42934 aks4d1p1p4 42945 aks4d1p1p6 42947 aks4d1p1p7 42948 25or6to4 43080 1p6e7 43137 2p7e9 43144 sqn5i 43168 4t5e20 43174 sq5 43177 235t711 43188 ex-decpmul 43189 inductionexd 45003 cos5t 47751 goldrasin 47755 goldracos5teq 47758 goldratmolem2 47759 goldratmolem3 47760 ceil5half3 48242 fmtno5lem1 48464 fmtno5lem2 48465 257prm 48472 fmtno4prmfac193 48484 fmtno4nprmfac193 48485 flsqrt5 48505 139prmALT 48507 127prm 48510 5tcu2e40 48526 41prothprmlem2 48529 41prothprm 48530 2exp340mod341 48657 gbpart8 48692 gpg5order 48984 linevalexample 49333 ackval3012 49630 5m4e1 50776 |
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