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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 12211 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4cn 12230 | . . 3 ⊢ 4 ∈ ℂ | |
| 3 | ax-1cn 11084 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11138 | . 2 ⊢ (4 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2832 | 1 ⊢ 5 ∈ ℂ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2113 (class class class)co 7358 ℂcc 11024 1c1 11027 + caddc 11029 4c4 12202 5c5 12203 |
| 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 2115 ax-9 2123 ax-ext 2708 ax-1cn 11084 ax-addcl 11086 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-cleq 2728 df-clel 2811 df-2 12208 df-3 12209 df-4 12210 df-5 12211 |
| This theorem is referenced by: 6cn 12236 6m1e5 12271 5p2e7 12296 5p3e8 12297 5p4e9 12298 5p5e10 12678 5t2e10 12707 5recm6rec 12750 bpoly4 15982 ef01bndlem 16109 5ndvds3 16340 5ndvds6 16341 dec5dvds 16992 dec5nprm 16994 2exp11 17017 2exp16 17018 prmlem1 17035 17prm 17044 139prm 17051 163prm 17052 317prm 17053 631prm 17054 1259lem1 17058 1259lem2 17059 1259lem3 17060 1259lem4 17061 2503lem1 17064 2503lem2 17065 2503lem3 17066 4001lem1 17068 4001lem2 17069 4001lem3 17070 4001lem4 17071 4001prm 17072 log2ublem3 26914 log2ub 26915 ppiub 27171 bclbnd 27247 bposlem4 27254 bposlem5 27255 bposlem6 27256 bposlem8 27258 bposlem9 27259 lgsdir2lem1 27292 2lgslem3c 27365 2lgsoddprmlem3d 27380 ex-fac 30526 fib6 34563 hgt750lem2 34809 12lcm5e60 42258 lcmineqlem23 42301 3lexlogpow5ineq1 42304 3lexlogpow5ineq5 42310 aks4d1p1p4 42321 aks4d1p1p6 42323 aks4d1p1p7 42324 sqn5i 42536 4t5e20 42542 sq5 42545 235t711 42556 ex-decpmul 42557 inductionexd 44392 ceil5half3 47582 fmtno5lem1 47795 fmtno5lem2 47796 257prm 47803 fmtno4prmfac193 47815 fmtno4nprmfac193 47816 flsqrt5 47836 139prmALT 47838 127prm 47841 5tcu2e40 47857 41prothprmlem2 47860 41prothprm 47861 2exp340mod341 47975 gbpart8 48010 gpg5order 48302 linevalexample 48637 ackval3012 48934 5m4e1 50038 |
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