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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 12411 | . 2 ⊢ 5 = (4 + 1) | |
| 2 | 4cn 12431 | . . 3 ⊢ 4 ∈ ℂ | |
| 3 | ax-1cn 11261 | . . 3 ⊢ 1 ∈ ℂ | |
| 4 | 2, 3 | addcli 11318 | . 2 ⊢ (4 + 1) ∈ ℂ |
| 5 | 1, 4 | eqeltri 2856 | 1 ⊢ 5 ∈ ℂ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2144 (class class class)co 7420 ℂcc 11201 1c1 11204 + caddc 11206 4c4 12402 5c5 12403 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 ax-1cn 11261 ax-addcl 11263 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1812 df-cleq 2752 df-clel 2835 df-2 12408 df-3 12409 df-4 12410 df-5 12411 |
| This theorem is used by: 6cn 12437 6m1e5 12476 5p2e7 12501 5p3e8 12502 5p4e9 12503 5p5e10 12893 5t2e10 12922 5recm6rec 12967 bpoly4 16230 ef01bndlem 16357 5ndvds3 16588 5ndvds6 16589 dec5dvds 17247 dec5nprm 17249 2exp11 17272 2exp16 17273 prmlem1 17290 17prm 17300 139prm 17307 163prm 17308 317prm 17309 631prm 17310 1259lem1 17314 1259lem2 17315 1259lem3 17316 1259lem4 17317 2503lem1 17320 2503lem2 17321 2503lem3 17322 4001lem1 17324 4001lem2 17325 4001lem3 17326 4001lem4 17327 4001prm 17328 log2ublem3 27281 log2ub 27282 ppiub 27536 bclbnd 27612 bposlem4 27619 bposlem5 27620 bposlem6 27621 bposlem8 27623 bposlem9 27624 lgsdir2lem1 27657 2lgslem3c 27730 2lgsoddprmlem3d 27745 ex-fac 31057 fib6 35084 hgt750lem2 35327 12lcm5e60 43151 lcmineqlem23 43194 3lexlogpow5ineq1 43197 3lexlogpow5ineq5 43203 aks4d1p1p4 43214 aks4d1p1p6 43216 aks4d1p1p7 43217 25or6to4 43349 1p6e7 43406 2p7e9 43413 sqn5i 43435 4t5e20 43441 sq5 43444 235t711 43455 ex-decpmul 43456 inductionexd 45248 cos5t 48018 goldrasin 48022 goldracos5teq 48025 goldratmolem2 48026 goldratmolem3 48027 ceil5half3 48509 fmtno5lem1 48731 fmtno5lem2 48732 257prm 48739 fmtno4prmfac193 48751 fmtno4nprmfac193 48752 flsqrt5 48772 139prmALT 48774 127prm 48777 5tcu2e40 48793 41prothprmlem2 48796 41prothprm 48797 2exp340mod341 48924 gbpart8 48959 gpg5order 49251 linevalexample 49600 ackval3012 49897 5m4e1 51103 |
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