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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 11982 | . 2 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ))) | |
2 | negeq 10877 | . . . . 5 ⊢ (𝑁 = 0 → -𝑁 = -0) | |
3 | neg0 10931 | . . . . 5 ⊢ -0 = 0 | |
4 | 2, 3 | syl6eq 2872 | . . . 4 ⊢ (𝑁 = 0 → -𝑁 = 0) |
5 | 0z 11991 | . . . 4 ⊢ 0 ∈ ℤ | |
6 | 4, 5 | eqeltrdi 2921 | . . 3 ⊢ (𝑁 = 0 → -𝑁 ∈ ℤ) |
7 | nnnegz 11983 | . . 3 ⊢ (𝑁 ∈ ℕ → -𝑁 ∈ ℤ) | |
8 | nnz 12003 | . . 3 ⊢ (-𝑁 ∈ ℕ → -𝑁 ∈ ℤ) | |
9 | 6, 7, 8 | 3jaoi 1423 | . 2 ⊢ ((𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ) → -𝑁 ∈ ℤ) |
10 | 1, 9 | simplbiim 507 | 1 ⊢ (𝑁 ∈ ℤ → -𝑁 ∈ ℤ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∨ w3o 1082 = wceq 1533 ∈ wcel 2110 ℝcr 10535 0cc0 10536 -cneg 10870 ℕcn 11637 ℤcz 11980 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5202 ax-nul 5209 ax-pow 5265 ax-pr 5329 ax-un 7460 ax-resscn 10593 ax-1cn 10594 ax-icn 10595 ax-addcl 10596 ax-addrcl 10597 ax-mulcl 10598 ax-mulrcl 10599 ax-mulcom 10600 ax-addass 10601 ax-mulass 10602 ax-distr 10603 ax-i2m1 10604 ax-1ne0 10605 ax-1rid 10606 ax-rnegex 10607 ax-rrecex 10608 ax-cnre 10609 ax-pre-lttri 10610 ax-pre-lttrn 10611 ax-pre-ltadd 10612 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3496 df-sbc 3772 df-csb 3883 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-pss 3953 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4567 df-pr 4569 df-tp 4571 df-op 4573 df-uni 4838 df-iun 4920 df-br 5066 df-opab 5128 df-mpt 5146 df-tr 5172 df-id 5459 df-eprel 5464 df-po 5473 df-so 5474 df-fr 5513 df-we 5515 df-xp 5560 df-rel 5561 df-cnv 5562 df-co 5563 df-dm 5564 df-rn 5565 df-res 5566 df-ima 5567 df-pred 6147 df-ord 6193 df-on 6194 df-lim 6195 df-suc 6196 df-iota 6313 df-fun 6356 df-fn 6357 df-f 6358 df-f1 6359 df-fo 6360 df-f1o 6361 df-fv 6362 df-riota 7113 df-ov 7158 df-oprab 7159 df-mpo 7160 df-om 7580 df-wrecs 7946 df-recs 8007 df-rdg 8045 df-er 8288 df-en 8509 df-dom 8510 df-sdom 8511 df-pnf 10676 df-mnf 10677 df-ltxr 10679 df-sub 10871 df-neg 10872 df-nn 11638 df-z 11981 |
This theorem is referenced by: znegclb 12018 nn0negz 12019 zsubcl 12023 zeo 12067 zindd 12082 znegcld 12088 zriotaneg 12095 uzneg 12262 zmax 12344 rebtwnz 12346 qnegcl 12364 fzsubel 12942 fzosubel 13095 ceilid 13218 modcyc2 13274 expsub 13476 seqshft 14443 climshft 14932 negdvdsb 15625 dvdsnegb 15626 summodnegmod 15639 dvdssub 15653 odd2np1 15689 divalglem6 15748 bitscmp 15786 gcdneg 15869 neggcd 15870 gcdaddmlem 15871 gcdabs 15876 lcmneg 15946 neglcm 15947 lcmabs 15948 mulgaddcomlem 18249 mulgneg2 18260 mulgsubdir 18266 cycsubgcl 18348 zaddablx 18991 cyggeninv 19001 zsubrg 20597 zringmulg 20624 zringinvg 20633 aaliou3lem9 24938 sinperlem 25065 wilthlem3 25646 basellem3 25659 basellem4 25660 basellem8 25664 basellem9 25665 lgsneg 25896 lgsdir2lem4 25903 lgsdir2lem5 25904 ex-fl 28225 ex-mod 28227 pell1234qrdich 39456 rmxyneg 39515 monotoddzzfi 39537 monotoddzz 39538 oddcomabszz 39539 jm2.24 39558 acongtr 39573 fzneg 39577 jm2.26a 39595 cosknegpi 42148 enege 43809 onego 43810 0nodd 44076 2zrngagrp 44213 zlmodzxzequap 44553 flsubz 44576 digvalnn0 44658 dig0 44665 dig2nn0 44670 |
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