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Mirrors > Home > ILE Home > Th. List > 0lt1 | GIF version |
Description: 0 is less than 1. Theorem I.21 of [Apostol] p. 20. Part of definition 11.2.7(vi) of [HoTT], p. (varies). (Contributed by NM, 17-Jan-1997.) |
Ref | Expression |
---|---|
0lt1 | ⊢ 0 < 1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-0lt1 7850 | . 2 ⊢ 0 <ℝ 1 | |
2 | 0re 7890 | . . 3 ⊢ 0 ∈ ℝ | |
3 | 1re 7889 | . . 3 ⊢ 1 ∈ ℝ | |
4 | ltxrlt 7955 | . . 3 ⊢ ((0 ∈ ℝ ∧ 1 ∈ ℝ) → (0 < 1 ↔ 0 <ℝ 1)) | |
5 | 2, 3, 4 | mp2an 423 | . 2 ⊢ (0 < 1 ↔ 0 <ℝ 1) |
6 | 1, 5 | mpbir 145 | 1 ⊢ 0 < 1 |
Colors of variables: wff set class |
Syntax hints: ↔ wb 104 ∈ wcel 2135 class class class wbr 3976 ℝcr 7743 0cc0 7744 1c1 7745 <ℝ cltrr 7748 < clt 7924 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-13 2137 ax-14 2138 ax-ext 2146 ax-sep 4094 ax-pow 4147 ax-pr 4181 ax-un 4405 ax-setind 4508 ax-cnex 7835 ax-resscn 7836 ax-1re 7838 ax-addrcl 7841 ax-0lt1 7850 ax-rnegex 7853 |
This theorem depends on definitions: df-bi 116 df-3an 969 df-tru 1345 df-fal 1348 df-nf 1448 df-sb 1750 df-eu 2016 df-mo 2017 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-ne 2335 df-nel 2430 df-ral 2447 df-rex 2448 df-rab 2451 df-v 2723 df-dif 3113 df-un 3115 df-in 3117 df-ss 3124 df-pw 3555 df-sn 3576 df-pr 3577 df-op 3579 df-uni 3784 df-br 3977 df-opab 4038 df-xp 4604 df-pnf 7926 df-mnf 7927 df-ltxr 7929 |
This theorem is referenced by: ine0 8283 0le1 8370 inelr 8473 1ap0 8479 eqneg 8619 ltp1 8730 ltm1 8732 recgt0 8736 mulgt1 8749 reclt1 8782 recgt1 8783 recgt1i 8784 recp1lt1 8785 recreclt 8786 sup3exmid 8843 nnge1 8871 nngt0 8873 0nnn 8875 nnrecgt0 8886 0ne1 8915 2pos 8939 3pos 8942 4pos 8945 5pos 8948 6pos 8949 7pos 8950 8pos 8951 9pos 8952 neg1lt0 8956 halflt1 9065 nn0p1gt0 9134 elnnnn0c 9150 elnnz1 9205 recnz 9275 1rp 9584 divlt1lt 9651 divle1le 9652 ledivge1le 9653 nnledivrp 9693 fz10 9971 fzpreddisj 9996 elfz1b 10015 modqfrac 10262 expgt1 10483 ltexp2a 10497 leexp2a 10498 expnbnd 10567 expnlbnd 10568 expnlbnd2 10569 nn0ltexp2 10612 expcanlem 10617 expcan 10618 bcn1 10660 resqrexlem1arp 10933 mulcn2 11239 reccn2ap 11240 georeclim 11440 geoisumr 11445 cos1bnd 11686 sin01gt0 11688 sincos1sgn 11691 p1modz1 11720 nnoddm1d2 11832 dvdsnprmd 12036 divdenle 12106 mopnex 13046 reeff1olem 13233 cos02pilt1 13313 rplogcl 13341 cxplt 13377 cxple 13378 ltexp2 13401 apdiff 13761 |
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