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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 2812 | . . . 4 ⊢ (𝑁 = 0 → -𝑁 = 0) |
| 5 | 0z 12704 | . . . 4 ⊢ 0 ∈ ℤ | |
| 6 | 4, 5 | eqeltrdi 2869 | . . 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 1570 ∈ wcel 2145 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 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 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 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 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 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 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 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 43867 rmxyneg 43926 monotoddzzfi 43948 monotoddzz 43949 oddcomabszz 43950 jm2.24 43969 acongtr 43984 fzneg 43988 jm2.26a 44006 cosknegpi 46878 ceilbi 48406 enege 48742 onego 48743 0nodd 49266 2zrngagrp 49345 zlmodzxzequap 49610 flsubz 49633 digvalnn0 49710 dig0 49717 dig2nn0 49722 |
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