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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 8722 0le1 8810 inelr 8914 1ap0 8920 eqneg 9064 ltp1 9176 ltm1 9178 recgt0 9182 mulgt1 9195 reclt1 9228 recgt1 9229 recgt1i 9230 recp1lt1 9231 recreclt 9232 sup3exmid 9289 nnge1 9329 nngt0 9331 0nnn 9333 nnrecgt0 9344 0ne1 9373 2pos 9397 3pos 9400 4pos 9403 5pos 9406 6pos 9407 7pos 9408 8pos 9409 9pos 9410 neg1lt0 9414 halflt1 9526 nn0p1gt0 9596 elnnnn0c 9612 elnnz1 9671 recnz 9743 1rp 10068 divlt1lt 10135 divle1le 10136 ledivge1le 10137 nnledivrp 10177 fz10 10460 fzpreddisj 10488 elfz1b 10507 modqfrac 10787 expgt1 11027 ltexp2a 11041 leexp2a 11042 resq01 11108 expnbnd 11114 expnlbnd 11115 expnlbnd2 11116 nn0ltexp2 11161 expcanlem 11167 expcan 11168 bcn1 11210 ssenneg 11294 s2fv0g 11573 resqrexlem1arp 11785 mulcn2 12094 reccn2ap 12095 georeclim 12296 geoisumr 12301 cos1bnd 12542 sin01gt0 12545 sincos1sgn 12548 p1modz1 12577 nnoddm1d2 12693 dvdsnprmd 12919 divdenle 12993 43prm 13256 ballotfilemi1 13294 ballotfilemic 13299 plendxnocndx 13617 znidomb 15042 mopnex 15655 ivthdichlem 15801 reeff1olem 15921 cos02pilt1 16002 rplogcl 16031 cxplt 16071 cxple 16072 ltexp2 16096 pellexlem2 16149 ppiqltx 16183 mersenne 16195 perfectlem2 16198 apdiff 17195 |
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