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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 12223 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4cn 12242 | . . 3 ⊢ 4 ∈ ℂ | |
| 3 | ax-1cn 11096 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11150 | . 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 7368 ℂcc 11036 1c1 11039 + caddc 11041 4c4 12214 5c5 12215 |
| 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 11096 ax-addcl 11098 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2729 df-clel 2812 df-2 12220 df-3 12221 df-4 12222 df-5 12223 |
| This theorem is referenced by: 6cn 12248 6m1e5 12283 5p2e7 12308 5p3e8 12309 5p4e9 12310 5p5e10 12690 5t2e10 12719 5recm6rec 12762 bpoly4 15994 ef01bndlem 16121 5ndvds3 16352 5ndvds6 16353 dec5dvds 17004 dec5nprm 17006 2exp11 17029 2exp16 17030 prmlem1 17047 17prm 17056 139prm 17063 163prm 17064 317prm 17065 631prm 17066 1259lem1 17070 1259lem2 17071 1259lem3 17072 1259lem4 17073 2503lem1 17076 2503lem2 17077 2503lem3 17078 4001lem1 17080 4001lem2 17081 4001lem3 17082 4001lem4 17083 4001prm 17084 log2ublem3 26926 log2ub 26927 ppiub 27183 bclbnd 27259 bposlem4 27266 bposlem5 27267 bposlem6 27268 bposlem8 27270 bposlem9 27271 lgsdir2lem1 27304 2lgslem3c 27377 2lgsoddprmlem3d 27392 ex-fac 30538 fib6 34583 hgt750lem2 34829 12lcm5e60 42372 lcmineqlem23 42415 3lexlogpow5ineq1 42418 3lexlogpow5ineq5 42424 aks4d1p1p4 42435 aks4d1p1p6 42437 aks4d1p1p7 42438 sqn5i 42649 4t5e20 42655 sq5 42658 235t711 42669 ex-decpmul 42670 inductionexd 44505 ceil5half3 47694 fmtno5lem1 47907 fmtno5lem2 47908 257prm 47915 fmtno4prmfac193 47927 fmtno4nprmfac193 47928 flsqrt5 47948 139prmALT 47950 127prm 47953 5tcu2e40 47969 41prothprmlem2 47972 41prothprm 47973 2exp340mod341 48087 gbpart8 48122 gpg5order 48414 linevalexample 48749 ackval3012 49046 5m4e1 50150 |
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