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| Mirrors > Home > MPE Home > Th. List > znegcl | Structured version Visualization version GIF version | ||
| Description: Closure law for negative integers. (Contributed by NM, 9-May-2004.) |
| Ref | Expression |
|---|---|
| znegcl | ⊢ (𝑁 ∈ ℤ → -𝑁 ∈ ℤ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elz 12610 | . 2 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ))) | |
| 2 | negeq 11466 | . . . . 5 ⊢ (𝑁 = 0 → -𝑁 = -0) | |
| 3 | neg0 11521 | . . . . 5 ⊢ -0 = 0 | |
| 4 | 2, 3 | eqtrdi 2816 | . . . 4 ⊢ (𝑁 = 0 → -𝑁 = 0) |
| 5 | 0z 12619 | . . . 4 ⊢ 0 ∈ ℤ | |
| 6 | 4, 5 | eqeltrdi 2873 | . . 3 ⊢ (𝑁 = 0 → -𝑁 ∈ ℤ) |
| 7 | nnnegz 12611 | . . 3 ⊢ (𝑁 ∈ ℕ → -𝑁 ∈ ℤ) | |
| 8 | nnz 12629 | . . 3 ⊢ (-𝑁 ∈ ℕ → -𝑁 ∈ ℤ) | |
| 9 | 6, 7, 8 | 3jaoi 1454 | . 2 ⊢ ((𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ) → -𝑁 ∈ ℤ) |
| 10 | 1, 9 | simplbiim 514 | 1 ⊢ (𝑁 ∈ ℤ → -𝑁 ∈ ℤ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∨ w3o 1102 = wceq 1570 ∈ wcel 2146 ℝcr 11116 0cc0 11117 -cneg 11459 ℕcn 12250 ℤcz 12608 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-resscn 11174 ax-1cn 11175 ax-icn 11176 ax-addcl 11177 ax-addrcl 11178 ax-mulcl 11179 ax-mulrcl 11180 ax-mulcom 11181 ax-addass 11182 ax-mulass 11183 ax-distr 11184 ax-i2m1 11185 ax-1ne0 11186 ax-1rid 11187 ax-rnegex 11188 ax-rrecex 11189 ax-cnre 11190 ax-pre-lttri 11191 ax-pre-lttrn 11192 ax-pre-ltadd 11193 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7869 df-2nd 7993 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-pnf 11262 df-mnf 11263 df-ltxr 11265 df-sub 11460 df-neg 11461 df-nn 12251 df-z 12609 |
| This theorem is used by: znegclb 12648 nn0negz 12649 zsubcl 12653 zeo 12700 zindd 12715 znegcld 12720 zriotaneg 12727 uzneg 12900 zmax 12987 rebtwnz 12989 qnegcl 13008 fzsubel 13607 fzosubel 13772 ceilid 13904 modcyc2 13960 expsub 14166 seqshft 15148 climshft 15653 negdvdsb 16354 dvdsnegb 16355 summodnegmod 16368 difmod0 16369 dvdssub 16386 odd2np1 16423 divalglem6 16480 bitscmp 16520 gcdneg 16604 neggcd 16605 gcdaddmlem 16606 lcmneg 16685 neglcm 16686 lcmabs 16687 mulgaddcomlem 19209 mulgneg2 19220 mulgsubdir 19226 cycsubgcl 19323 zaddablx 19988 cyggeninv 19999 zsubrg 21622 zringsub 21657 zringmulg 21658 zringinvg 21667 pzriprnglem4 21686 aaliou3lem9 26566 sinperlem 26698 wilthlem3 27287 basellem3 27300 basellem4 27301 basellem8 27305 basellem9 27306 lgsneg 27538 lgsdir2lem4 27545 lgsdir2lem5 27546 ex-fl 30871 ex-mod 30873 pell1234qrdich 43648 rmxyneg 43707 monotoddzzfi 43729 monotoddzz 43730 oddcomabszz 43731 jm2.24 43750 acongtr 43765 fzneg 43769 jm2.26a 43787 cosknegpi 46643 ceilbi 48134 enege 48470 onego 48471 0nodd 48994 2zrngagrp 49073 zlmodzxzequap 49338 flsubz 49361 digvalnn0 49438 dig0 49445 dig2nn0 49450 |
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