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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 12620 | . 2 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ))) | |
| 2 | negeq 11476 | . . . . 5 ⊢ (𝑁 = 0 → -𝑁 = -0) | |
| 3 | neg0 11531 | . . . . 5 ⊢ -0 = 0 | |
| 4 | 2, 3 | eqtrdi 2811 | . . . 4 ⊢ (𝑁 = 0 → -𝑁 = 0) |
| 5 | 0z 12629 | . . . 4 ⊢ 0 ∈ ℤ | |
| 6 | 4, 5 | eqeltrdi 2868 | . . 3 ⊢ (𝑁 = 0 → -𝑁 ∈ ℤ) |
| 7 | nnnegz 12621 | . . 3 ⊢ (𝑁 ∈ ℕ → -𝑁 ∈ ℤ) | |
| 8 | nnz 12639 | . . 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 2145 ℝcr 11126 0cc0 11127 -cneg 11469 ℕcn 12260 ℤcz 12618 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 |
| 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 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 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7864 df-2nd 7988 df-frecs 8281 df-wrecs 8312 df-recs 8361 df-rdg 8400 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-pnf 11272 df-mnf 11273 df-ltxr 11275 df-sub 11470 df-neg 11471 df-nn 12261 df-z 12619 |
| This theorem is used by: znegclb 12658 nn0negz 12659 zsubcl 12663 zeo 12710 zindd 12725 znegcld 12730 zriotaneg 12737 uzneg 12910 zmax 12997 rebtwnz 12999 qnegcl 13019 fzsubel 13618 fzosubel 13783 ceilid 13915 modcyc2 13971 expsub 14177 seqshft 15161 climshft 15666 negdvdsb 16365 dvdsnegb 16366 summodnegmod 16379 difmod0 16380 dvdssub 16397 odd2np1 16434 divalglem6 16491 bitscmp 16531 gcdneg 16615 neggcd 16616 gcdaddmlem 16617 lcmneg 16696 neglcm 16697 lcmabs 16698 mulgaddcomlem 19223 mulgneg2 19234 mulgsubdir 19240 cycsubgcl 19337 zaddablx 20002 cyggeninv 20013 zsubrg 21636 zringsub 21671 zringmulg 21672 zringinvg 21681 pzriprnglem4 21700 aaliou3lem9 26589 sinperlem 26721 wilthlem3 27309 basellem3 27322 basellem4 27323 basellem8 27327 basellem9 27328 lgsneg 27560 lgsdir2lem4 27567 lgsdir2lem5 27568 ex-fl 30930 ex-mod 30932 pell1234qrdich 43705 rmxyneg 43764 monotoddzzfi 43786 monotoddzz 43787 oddcomabszz 43788 jm2.24 43807 acongtr 43822 fzneg 43826 jm2.26a 43844 cosknegpi 46700 ceilbi 48228 enege 48564 onego 48565 0nodd 49088 2zrngagrp 49167 zlmodzxzequap 49432 flsubz 49455 digvalnn0 49532 dig0 49539 dig2nn0 49544 |
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