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Mirrors > Home > ILE Home > Th. List > zre | GIF version |
Description: An integer is a real. (Contributed by NM, 8-Jan-2002.) |
Ref | Expression |
---|---|
zre | ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℝ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elz 8353 | . 2 ⊢ (𝑁 ∈ ℤ ↔ (𝑁 ∈ ℝ ∧ (𝑁 = 0 ∨ 𝑁 ∈ ℕ ∨ -𝑁 ∈ ℕ))) | |
2 | 1 | simplbi 268 | 1 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℝ) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∨ w3o 918 = wceq 1284 ∈ wcel 1433 ℝcr 6980 0cc0 6981 -cneg 7280 ℕcn 8039 ℤcz 8351 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-3or 920 df-3an 921 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-rex 2354 df-rab 2357 df-v 2603 df-un 2977 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-br 3786 df-iota 4887 df-fv 4930 df-ov 5535 df-neg 7282 df-z 8352 |
This theorem is referenced by: zcn 8356 zrei 8357 zssre 8358 elnn0z 8364 elnnz1 8374 peano2z 8387 zaddcl 8391 ztri3or0 8393 ztri3or 8394 zletric 8395 zlelttric 8396 zltnle 8397 zleloe 8398 zletr 8400 znnsub 8402 nzadd 8403 zltp1le 8405 zleltp1 8406 znn0sub 8416 zapne 8422 zdceq 8423 zdcle 8424 zdclt 8425 zltlen 8426 nn0ge0div 8434 zextle 8438 btwnnz 8441 suprzclex 8445 msqznn 8447 peano2uz2 8454 uzind 8458 fzind 8462 fnn0ind 8463 eluzuzle 8627 uzid 8633 uzneg 8637 uz11 8641 eluzp1m1 8642 eluzp1p1 8644 eluzaddi 8645 eluzsubi 8646 uzin 8651 uz3m2nn 8661 peano2uz 8671 nn0pzuz 8675 eluz2b2 8690 uz2mulcl 8695 eqreznegel 8699 lbzbi 8701 qre 8710 zltaddlt1le 9028 elfz1eq 9054 fznlem 9060 fzen 9062 uzsubsubfz 9066 fzaddel 9077 fzsuc2 9096 fzp1disj 9097 fzrev 9101 elfz1b 9107 fzneuz 9118 fzp1nel 9121 elfz0fzfz0 9137 fz0fzelfz0 9138 fznn0sub2 9139 fz0fzdiffz0 9141 elfzmlbp 9143 difelfznle 9146 elfzouz2 9170 fzonlt0 9176 fzossrbm1 9182 fzo1fzo0n0 9192 elfzo0z 9193 fzofzim 9197 eluzgtdifelfzo 9206 fzossfzop1 9221 ssfzo12bi 9234 elfzomelpfzo 9240 fzosplitprm1 9243 fzostep1 9246 flid 9286 flqbi2 9293 2tnp1ge0ge0 9303 flhalf 9304 fldiv4p1lem1div2 9307 ceiqle 9315 uzsinds 9428 zsqcl2 9553 nn0abscl 9971 evennn02n 10282 evennn2n 10283 ltoddhalfle 10293 infssuzex 10345 dfgcd2 10403 ialgcvga 10433 isprm3 10500 dvdsnprmd 10507 sqnprm 10517 |
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