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| Mirrors > Home > MPE Home > Th. List > elznn0nn | Structured version Visualization version GIF version | ||
| Description: Integer property expressed in terms nonnegative integers and positive integers. (Contributed by NM, 10-May-2004.) |
| Ref | Expression |
|---|---|
| elznn0nn | ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℕ0 ∨ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elz 12504 | . 2 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ))) | |
| 2 | andi 1010 | . . 3 ⊢ ((𝑁 ∈ ℝ ∧ ((𝑁 = 0 ∨ 𝑁 ∈ ℕ) ∨ -𝑁 ∈ ℕ)) ↔ ((𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ)) ∨ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ))) | |
| 3 | df-3or 1088 | . . . 4 ⊢ ((𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ) ↔ ((𝑁 = 0 ∨ 𝑁 ∈ ℕ) ∨ -𝑁 ∈ ℕ)) | |
| 4 | 3 | anbi2i 624 | . . 3 ⊢ ((𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ)) ↔ (𝑁 ∈ ℝ ∧ ((𝑁 = 0 ∨ 𝑁 ∈ ℕ) ∨ -𝑁 ∈ ℕ))) |
| 5 | nn0re 12424 | . . . . . 6 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℝ) | |
| 6 | 5 | pm4.71ri 560 | . . . . 5 ⊢ (𝑁 ∈ ℕ0 ↔ (𝑁 ∈ ℝ ∧ 𝑁 ∈ ℕ0)) |
| 7 | elnn0 12417 | . . . . . . 7 ⊢ (𝑁 ∈ ℕ0 ↔ (𝑁 ∈ ℕ ∨ 𝑁 = 0)) | |
| 8 | orcom 871 | . . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∨ 𝑁 = 0) ↔ (𝑁 = 0 ∨ 𝑁 ∈ ℕ)) | |
| 9 | 7, 8 | bitri 275 | . . . . . 6 ⊢ (𝑁 ∈ ℕ0 ↔ (𝑁 = 0 ∨ 𝑁 ∈ ℕ)) |
| 10 | 9 | anbi2i 624 | . . . . 5 ⊢ ((𝑁 ∈ ℝ ∧ 𝑁 ∈ ℕ0) ↔ (𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ))) |
| 11 | 6, 10 | bitri 275 | . . . 4 ⊢ (𝑁 ∈ ℕ0 ↔ (𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ))) |
| 12 | 11 | orbi1i 914 | . . 3 ⊢ ((𝑁 ∈ ℕ0 ∨ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ)) ↔ ((𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ)) ∨ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ))) |
| 13 | 2, 4, 12 | 3bitr4i 303 | . 2 ⊢ ((𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ)) ↔ (𝑁 ∈ ℕ0 ∨ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ))) |
| 14 | 1, 13 | bitri 275 | 1 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℕ0 ∨ (𝑁 ∈ ℝ ∧ -𝑁 ∈ ℕ))) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 ∨ wo 848 ∨ w3o 1086 = wceq 1542 ∈ wcel 2114 ℝcr 11039 0cc0 11040 -cneg 11379 ℕcn 12159 ℕ0cn0 12415 ℤcz 12502 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5245 ax-nul 5255 ax-pr 5381 ax-un 7692 ax-1cn 11098 ax-icn 11099 ax-addcl 11100 ax-addrcl 11101 ax-mulcl 11102 ax-mulrcl 11103 ax-i2m1 11108 ax-1ne0 11109 ax-rnegex 11111 ax-rrecex 11112 ax-cnre 11113 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5529 df-eprel 5534 df-po 5542 df-so 5543 df-fr 5587 df-we 5589 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-res 5646 df-ima 5647 df-pred 6269 df-ord 6330 df-on 6331 df-lim 6332 df-suc 6333 df-iota 6458 df-fun 6504 df-fn 6505 df-f 6506 df-f1 6507 df-fo 6508 df-f1o 6509 df-fv 6510 df-ov 7373 df-om 7821 df-2nd 7946 df-frecs 8235 df-wrecs 8266 df-recs 8315 df-rdg 8353 df-neg 11381 df-nn 12160 df-n0 12416 df-z 12503 |
| This theorem is referenced by: zindd 12607 expcl2lem 14010 mulexpz 14039 expaddz 14043 expmulz 14045 absexpz 15242 bitsfzo 16376 pcid 16815 mulgsubcl 19035 mulgneg 19039 ghmmulg 19174 prmirred 21446 tgpmulg 24054 dvexp3 25955 2sqnn0 27422 ipasslem3 30927 reelznn0nn 42860 ztprmneprm 48736 |
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