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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 12143 | . 2 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ))) | |
2 | negeq 11035 | . . . . 5 ⊢ (𝑁 = 0 → -𝑁 = -0) | |
3 | neg0 11089 | . . . . 5 ⊢ -0 = 0 | |
4 | 2, 3 | eqtrdi 2787 | . . . 4 ⊢ (𝑁 = 0 → -𝑁 = 0) |
5 | 0z 12152 | . . . 4 ⊢ 0 ∈ ℤ | |
6 | 4, 5 | eqeltrdi 2839 | . . 3 ⊢ (𝑁 = 0 → -𝑁 ∈ ℤ) |
7 | nnnegz 12144 | . . 3 ⊢ (𝑁 ∈ ℕ → -𝑁 ∈ ℤ) | |
8 | nnz 12164 | . . 3 ⊢ (-𝑁 ∈ ℕ → -𝑁 ∈ ℤ) | |
9 | 6, 7, 8 | 3jaoi 1429 | . 2 ⊢ ((𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ) → -𝑁 ∈ ℤ) |
10 | 1, 9 | simplbiim 508 | 1 ⊢ (𝑁 ∈ ℤ → -𝑁 ∈ ℤ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∨ w3o 1088 = wceq 1543 ∈ wcel 2112 ℝcr 10693 0cc0 10694 -cneg 11028 ℕcn 11795 ℤcz 12141 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-sep 5177 ax-nul 5184 ax-pow 5243 ax-pr 5307 ax-un 7501 ax-resscn 10751 ax-1cn 10752 ax-icn 10753 ax-addcl 10754 ax-addrcl 10755 ax-mulcl 10756 ax-mulrcl 10757 ax-mulcom 10758 ax-addass 10759 ax-mulass 10760 ax-distr 10761 ax-i2m1 10762 ax-1ne0 10763 ax-1rid 10764 ax-rnegex 10765 ax-rrecex 10766 ax-cnre 10767 ax-pre-lttri 10768 ax-pre-lttrn 10769 ax-pre-ltadd 10770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-nfc 2879 df-ne 2933 df-nel 3037 df-ral 3056 df-rex 3057 df-reu 3058 df-rab 3060 df-v 3400 df-sbc 3684 df-csb 3799 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4224 df-if 4426 df-pw 4501 df-sn 4528 df-pr 4530 df-tp 4532 df-op 4534 df-uni 4806 df-iun 4892 df-br 5040 df-opab 5102 df-mpt 5121 df-tr 5147 df-id 5440 df-eprel 5445 df-po 5453 df-so 5454 df-fr 5494 df-we 5496 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-pred 6140 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6316 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7148 df-ov 7194 df-oprab 7195 df-mpo 7196 df-om 7623 df-wrecs 8025 df-recs 8086 df-rdg 8124 df-er 8369 df-en 8605 df-dom 8606 df-sdom 8607 df-pnf 10834 df-mnf 10835 df-ltxr 10837 df-sub 11029 df-neg 11030 df-nn 11796 df-z 12142 |
This theorem is referenced by: znegclb 12179 nn0negz 12180 zsubcl 12184 zeo 12228 zindd 12243 znegcld 12249 zriotaneg 12256 uzneg 12423 zmax 12506 rebtwnz 12508 qnegcl 12527 fzsubel 13113 fzosubel 13266 ceilid 13389 modcyc2 13445 expsub 13648 seqshft 14613 climshft 15102 negdvdsb 15797 dvdsnegb 15798 summodnegmod 15811 dvdssub 15828 odd2np1 15865 divalglem6 15922 bitscmp 15960 gcdneg 16044 neggcd 16045 gcdaddmlem 16046 gcdabsOLD 16054 lcmneg 16123 neglcm 16124 lcmabs 16125 mulgaddcomlem 18468 mulgneg2 18479 mulgsubdir 18485 cycsubgcl 18567 zaddablx 19211 cyggeninv 19221 zsubrg 20370 zringmulg 20397 zringinvg 20406 aaliou3lem9 25197 sinperlem 25324 wilthlem3 25906 basellem3 25919 basellem4 25920 basellem8 25924 basellem9 25925 lgsneg 26156 lgsdir2lem4 26163 lgsdir2lem5 26164 ex-fl 28484 ex-mod 28486 pell1234qrdich 40327 rmxyneg 40386 monotoddzzfi 40408 monotoddzz 40409 oddcomabszz 40410 jm2.24 40429 acongtr 40444 fzneg 40448 jm2.26a 40466 cosknegpi 43028 enege 44713 onego 44714 0nodd 44980 2zrngagrp 45117 zlmodzxzequap 45456 flsubz 45479 digvalnn0 45561 dig0 45568 dig2nn0 45573 |
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