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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 11131 | . 2 ⊢ 1 ∈ ℂ | |
| 2 | subcl 11429 | . 2 ⊢ ((𝑁 ∈ ℂ ∧ 1 ∈ ℂ) → (𝑁 − 1) ∈ ℂ) | |
| 3 | 1, 2 | mpan2 701 | 1 ⊢ (𝑁 ∈ ℂ → (𝑁 − 1) ∈ ℂ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2142 (class class class)co 7396 ℂcc 11071 1c1 11074 − cmin 11414 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5542 df-po 5555 df-so 5556 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-er 8678 df-en 8928 df-dom 8929 df-sdom 8930 df-pnf 11218 df-mnf 11219 df-ltxr 11221 df-sub 11416 |
| This theorem is referenced by: kcnktkm1cn 11618 xp1d2m1eqxm1d2 12475 elnnnn0 12524 hash2iun1dif1 15852 pwdif 15898 nn0ob 16418 2lgslem1a1 27453 addsqrexnreu 27506 addsqnreup 27507 addsq2nreurex 27508 clwlkclwwlklem2a1 30194 clwlkclwwlklem2a 30200 clwlkclwwlklem3 30203 frrusgrord0 30542 numclwwlk7 30593 dirkertrigeqlem2 46673 fmtnoprmfac2 48176 lighneallem3 48216 proththd 48223 zofldiv2ALTV 48284 nn0onn0exALTV 48321 nn0onn0ex 49145 nn0sumshdiglemB 49242 |
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