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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 12238 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4cn 12257 | . . 3 ⊢ 4 ∈ ℂ | |
| 3 | ax-1cn 11087 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11142 | . 2 ⊢ (4 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2833 | 1 ⊢ 5 ∈ ℂ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2114 (class class class)co 7360 ℂcc 11027 1c1 11030 + caddc 11032 4c4 12229 5c5 12230 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-1cn 11087 ax-addcl 11089 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2729 df-clel 2812 df-2 12235 df-3 12236 df-4 12237 df-5 12238 |
| This theorem is referenced by: 6cn 12263 6m1e5 12298 5p2e7 12323 5p3e8 12324 5p4e9 12325 5p5e10 12706 5t2e10 12735 5recm6rec 12778 bpoly4 16015 ef01bndlem 16142 5ndvds3 16373 5ndvds6 16374 dec5dvds 17026 dec5nprm 17028 2exp11 17051 2exp16 17052 prmlem1 17069 17prm 17078 139prm 17085 163prm 17086 317prm 17087 631prm 17088 1259lem1 17092 1259lem2 17093 1259lem3 17094 1259lem4 17095 2503lem1 17098 2503lem2 17099 2503lem3 17100 4001lem1 17102 4001lem2 17103 4001lem3 17104 4001lem4 17105 4001prm 17106 log2ublem3 26925 log2ub 26926 ppiub 27181 bclbnd 27257 bposlem4 27264 bposlem5 27265 bposlem6 27266 bposlem8 27268 bposlem9 27269 lgsdir2lem1 27302 2lgslem3c 27375 2lgsoddprmlem3d 27390 ex-fac 30536 fib6 34566 hgt750lem2 34812 12lcm5e60 42461 lcmineqlem23 42504 3lexlogpow5ineq1 42507 3lexlogpow5ineq5 42513 aks4d1p1p4 42524 aks4d1p1p6 42526 aks4d1p1p7 42527 sqn5i 42731 4t5e20 42737 sq5 42740 235t711 42751 ex-decpmul 42752 inductionexd 44600 goldrasin 47344 ceil5half3 47806 fmtno5lem1 48028 fmtno5lem2 48029 257prm 48036 fmtno4prmfac193 48048 fmtno4nprmfac193 48049 flsqrt5 48069 139prmALT 48071 127prm 48074 5tcu2e40 48090 41prothprmlem2 48093 41prothprm 48094 2exp340mod341 48221 gbpart8 48256 gpg5order 48548 linevalexample 48883 ackval3012 49180 5m4e1 50284 |
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