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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 12695 | . 2 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ))) | |
| 2 | negeq 11549 | . . . . 5 ⊢ (𝑁 = 0 → -𝑁 = -0) | |
| 3 | neg0 11604 | . . . . 5 ⊢ -0 = 0 | |
| 4 | 2, 3 | eqtrdi 2811 | . . . 4 ⊢ (𝑁 = 0 → -𝑁 = 0) |
| 5 | 0z 12704 | . . . 4 ⊢ 0 ∈ ℤ | |
| 6 | 4, 5 | eqeltrdi 2868 | . . 3 ⊢ (𝑁 = 0 → -𝑁 ∈ ℤ) |
| 7 | nnnegz 12696 | . . 3 ⊢ (𝑁 ∈ ℕ → -𝑁 ∈ ℤ) | |
| 8 | nnz 12714 | . . 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 1569 ∈ wcel 2144 ℝcr 11199 0cc0 11200 -cneg 11542 ℕcn 12335 ℤcz 12693 |
| 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-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 |
| 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 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-dif 3899 df-un 3901 df-in 3903 df-ss 3914 df-pss 4034 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-pnf 11345 df-mnf 11346 df-ltxr 11348 df-sub 11543 df-neg 11544 df-nn 12336 df-z 12694 |
| This theorem is used by: znegclb 12733 nn0negz 12734 zsubcl 12738 zeo 12785 zindd 12800 znegcld 12805 zriotaneg 12812 uzneg 12985 zmax 13072 rebtwnz 13074 qnegcl 13094 fzsubel 13694 fzosubel 13859 ceilid 13991 modcyc2 14047 expsub 14253 seqshft 15238 climshft 15743 negdvdsb 16442 dvdsnegb 16443 summodnegmod 16456 difmod0 16457 dvdssub 16474 odd2np1 16511 divalglem6 16568 bitscmp 16608 gcdneg 16694 neggcd 16695 gcdaddmlem 16696 lcmneg 16778 neglcm 16779 lcmabs 16780 mulgaddcomlem 19307 mulgneg2 19318 mulgsubdir 19324 cycsubgcl 19421 zaddablx 20086 cyggeninv 20097 zsubrg 21726 zringsub 21761 zringmulg 21762 zringinvg 21771 pzriprnglem4 21790 aaliou3lem9 26677 sinperlem 26809 wilthlem3 27397 basellem3 27410 basellem4 27411 basellem8 27415 basellem9 27416 lgsneg 27648 lgsdir2lem4 27655 lgsdir2lem5 27656 ex-fl 31048 ex-mod 31050 pell1234qrdich 43868 rmxyneg 43927 monotoddzzfi 43949 monotoddzz 43950 oddcomabszz 43951 jm2.24 43970 acongtr 43985 fzneg 43989 jm2.26a 44007 cosknegpi 46879 ceilbi 48407 enege 48743 onego 48744 0nodd 49267 2zrngagrp 49346 zlmodzxzequap 49611 flsubz 49634 digvalnn0 49711 dig0 49718 dig2nn0 49723 |
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