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| Mirrors > Home > MPE Home > Th. List > peano2cnm | Structured version Visualization version GIF version | ||
| Description: "Reverse" second Peano postulate analogue for complex numbers: A complex number minus 1 is a complex number. (Contributed by Alexander van der Vekens, 18-Mar-2018.) |
| Ref | Expression |
|---|---|
| peano2cnm | ⊢ (𝑁 ∈ ℂ → (𝑁 − 1) ∈ ℂ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 11268 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | subcl 11566 | . 2 ⊢ ((𝑁 ∈ ℂ ∧ 1 ∈ ℂ) → (𝑁 − 1) ∈ ℂ) | |
| 3 | 1, 2 | mpan2 704 | 1 ⊢ (𝑁 ∈ ℂ → (𝑁 − 1) ∈ ℂ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2146 (class class class)co 7427 ℂcc 11208 1c1 11211 − cmin 11551 |
| 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 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-nul 5262 ax-pow 5330 ax-pr 5394 ax-un 7758 ax-resscn 11267 ax-1cn 11268 ax-icn 11269 ax-addcl 11270 ax-addrcl 11271 ax-mulcl 11272 ax-mulrcl 11273 ax-mulcom 11274 ax-addass 11275 ax-mulass 11276 ax-distr 11277 ax-i2m1 11278 ax-1ne0 11279 ax-1rid 11280 ax-rnegex 11281 ax-rrecex 11282 ax-cnre 11283 ax-pre-lttri 11284 ax-pre-lttrn 11285 ax-pre-ltadd 11286 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3065 df-ral 3080 df-rex 3090 df-reu 3369 df-rab 3416 df-v 3455 df-sbc 3742 df-csb 3851 df-ss 3900 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-pw 4561 df-sn 4588 df-pr 4590 df-op 4838 df-uni 4870 df-br 5106 df-opab 5170 df-mpt 5189 df-id 5549 df-po 5562 df-so 5563 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-iota 6500 df-fun 6548 df-fn 6549 df-f 6550 df-f1 6551 df-fo 6552 df-f1o 6553 df-fv 6554 df-riota 7384 df-ov 7430 df-oprab 7431 df-mpo 7432 df-er 8728 df-en 8985 df-dom 8986 df-sdom 8987 df-pnf 11355 df-mnf 11356 df-ltxr 11358 df-sub 11553 |
| This theorem is used by: kcnktkm1cn 11757 xp1d2m1eqxm1d2 12610 elnnnn0 12659 hash2iun1dif1 16003 pwdif 16049 nn0ob 16566 2lgslem1a1 27728 addsqrexnreu 27781 addsqnreup 27782 addsq2nreurex 27783 clwlkclwwlklem2a1 30595 clwlkclwwlklem2a 30601 clwlkclwwlklem3 30604 frrusgrord0 30953 numclwwlk7 31004 dirkertrigeqlem2 47248 fmtnoprmfac2 48791 lighneallem3 48831 proththd 48838 zofldiv2ALTV 48899 nn0onn0exALTV 48936 nn0onn0ex 49774 nn0sumshdiglemB 49871 |
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