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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 11986 | . 2 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ))) | |
2 | negeq 10880 | . . . . 5 ⊢ (𝑁 = 0 → -𝑁 = -0) | |
3 | neg0 10934 | . . . . 5 ⊢ -0 = 0 | |
4 | 2, 3 | syl6eq 2874 | . . . 4 ⊢ (𝑁 = 0 → -𝑁 = 0) |
5 | 0z 11995 | . . . 4 ⊢ 0 ∈ ℤ | |
6 | 4, 5 | eqeltrdi 2923 | . . 3 ⊢ (𝑁 = 0 → -𝑁 ∈ ℤ) |
7 | nnnegz 11987 | . . 3 ⊢ (𝑁 ∈ ℕ → -𝑁 ∈ ℤ) | |
8 | nnz 12007 | . . 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 1537 ∈ wcel 2114 ℝcr 10538 0cc0 10539 -cneg 10873 ℕcn 11640 ℤcz 11984 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-addrcl 10600 ax-mulcl 10601 ax-mulrcl 10602 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-i2m1 10607 ax-1ne0 10608 ax-1rid 10609 ax-rnegex 10610 ax-rrecex 10611 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614 ax-pre-ltadd 10615 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-reu 3147 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-tr 5175 df-id 5462 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-we 5518 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-pred 6150 df-ord 6196 df-on 6197 df-lim 6198 df-suc 6199 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-riota 7116 df-ov 7161 df-oprab 7162 df-mpo 7163 df-om 7583 df-wrecs 7949 df-recs 8010 df-rdg 8048 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-pnf 10679 df-mnf 10680 df-ltxr 10682 df-sub 10874 df-neg 10875 df-nn 11641 df-z 11985 |
This theorem is referenced by: znegclb 12022 nn0negz 12023 zsubcl 12027 zeo 12071 zindd 12086 znegcld 12092 zriotaneg 12099 uzneg 12266 zmax 12348 rebtwnz 12350 qnegcl 12368 fzsubel 12946 fzosubel 13099 ceilid 13222 modcyc2 13278 expsub 13480 seqshft 14446 climshft 14935 negdvdsb 15628 dvdsnegb 15629 summodnegmod 15642 dvdssub 15656 odd2np1 15692 divalglem6 15751 bitscmp 15789 gcdneg 15872 neggcd 15873 gcdaddmlem 15874 gcdabs 15879 lcmneg 15949 neglcm 15950 lcmabs 15951 mulgaddcomlem 18252 mulgneg2 18263 mulgsubdir 18269 cycsubgcl 18351 zaddablx 18994 cyggeninv 19004 zsubrg 20600 zringmulg 20627 zringinvg 20636 aaliou3lem9 24941 sinperlem 25068 wilthlem3 25649 basellem3 25662 basellem4 25663 basellem8 25667 basellem9 25668 lgsneg 25899 lgsdir2lem4 25906 lgsdir2lem5 25907 ex-fl 28228 ex-mod 28230 pell1234qrdich 39465 rmxyneg 39524 monotoddzzfi 39546 monotoddzz 39547 oddcomabszz 39548 jm2.24 39567 acongtr 39582 fzneg 39586 jm2.26a 39604 cosknegpi 42157 enege 43817 onego 43818 0nodd 44084 2zrngagrp 44221 zlmodzxzequap 44561 flsubz 44584 digvalnn0 44666 dig0 44673 dig2nn0 44678 |
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