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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 8286 |
. 2
| |
| 2 | 0re 8327 |
. . 3
| |
| 3 | 1re 8326 |
. . 3
| |
| 4 | ltxrlt 8392 |
. . 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 8271 ax-resscn 8272 ax-1re 8274 ax-addrcl 8277 ax-0lt1 8286 ax-rnegex 8289 |
| 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 8363 df-mnf 8364 df-ltxr 8366 |
| This theorem is used by: ine0 8723 0le1 8811 inelr 8915 1ap0 8921 eqneg 9065 ltp1 9177 ltm1 9179 recgt0 9183 mulgt1 9196 reclt1 9229 recgt1 9230 recgt1i 9231 recp1lt1 9232 recreclt 9233 sup3exmid 9290 nnge1 9330 nngt0 9332 0nnn 9334 nnrecgt0 9345 0ne1 9374 2pos 9398 3pos 9401 4pos 9404 5pos 9407 6pos 9408 7pos 9409 8pos 9410 9pos 9411 neg1lt0 9415 halflt1 9527 nn0p1gt0 9597 elnnnn0c 9613 elnnz1 9672 recnz 9744 1rp 10069 divlt1lt 10136 divle1le 10137 ledivge1le 10138 nnledivrp 10178 fz10 10461 fzpreddisj 10489 elfz1b 10508 modqfrac 10789 expgt1 11029 ltexp2a 11043 leexp2a 11044 resq01 11110 expnbnd 11116 expnlbnd 11117 expnlbnd2 11118 nn0ltexp2 11163 expcanlem 11169 expcan 11170 bcn1 11212 ssenneg 11296 s2fv0g 11575 resqrexlem1arp 11787 mulcn2 12097 reccn2ap 12098 georeclim 12299 geoisumr 12304 cos1bnd 12545 sin01gt0 12548 sincos1sgn 12551 p1modz1 12580 nnoddm1d2 12696 dvdsnprmd 12922 divdenle 12996 43prm 13259 ballotfilemi1 13297 ballotfilemic 13302 plendxnocndx 13621 znidomb 15077 mopnex 15697 ivthdichlem 15843 reeff1olem 15963 cos02pilt1 16044 rplogcl 16073 cxplt 16113 cxple 16114 ltexp2 16138 pellexlem2 16191 ppiqltx 16242 mersenne 16258 perfectlem2 16261 apdiff 17264 |
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