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| Mirrors > Home > ILE Home > Th. List > 0lt1 | Unicode 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 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-0lt1 8285 |
. 2
| |
| 2 | 0re 8326 |
. . 3
| |
| 3 | 1re 8325 |
. . 3
| |
| 4 | ltxrlt 8391 |
. . 3
| |
| 5 | 2, 3, 4 | mp2an 430 |
. 2
|
| 6 | 1, 5 | mpbir 146 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8270 ax-resscn 8271 ax-1re 8273 ax-addrcl 8276 ax-0lt1 8285 ax-rnegex 8288 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-xp 4780 df-pnf 8362 df-mnf 8363 df-ltxr 8365 |
| This theorem is used by: ine0 8721 0le1 8809 inelr 8912 1ap0 8918 eqneg 9062 ltp1 9174 ltm1 9176 recgt0 9180 mulgt1 9193 reclt1 9226 recgt1 9227 recgt1i 9228 recp1lt1 9229 recreclt 9230 sup3exmid 9287 nnge1 9327 nngt0 9329 0nnn 9331 nnrecgt0 9342 0ne1 9371 2pos 9395 3pos 9398 4pos 9401 5pos 9404 6pos 9405 7pos 9406 8pos 9407 9pos 9408 neg1lt0 9412 halflt1 9522 nn0p1gt0 9592 elnnnn0c 9608 elnnz1 9667 recnz 9739 1rp 10058 divlt1lt 10125 divle1le 10126 ledivge1le 10127 nnledivrp 10167 fz10 10450 fzpreddisj 10478 elfz1b 10497 modqfrac 10774 expgt1 11014 ltexp2a 11028 leexp2a 11029 resq01 11095 expnbnd 11101 expnlbnd 11102 expnlbnd2 11103 nn0ltexp2 11147 expcanlem 11153 expcan 11154 bcn1 11196 ssenneg 11280 s2fv0g 11559 resqrexlem1arp 11771 mulcn2 12078 reccn2ap 12079 georeclim 12280 geoisumr 12285 cos1bnd 12526 sin01gt0 12529 sincos1sgn 12532 p1modz1 12561 nnoddm1d2 12677 dvdsnprmd 12903 divdenle 12975 ballotfilemi1 13245 ballotfilemic 13250 plendxnocndx 13568 znidomb 14993 mopnex 15606 ivthdichlem 15752 reeff1olem 15872 cos02pilt1 15952 rplogcl 15980 cxplt 16018 cxple 16019 ltexp2 16043 pellexlem2 16092 mersenne 16111 perfectlem2 16114 apdiff 17097 |
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