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| Mirrors > Home > ILE Home > Th. List > ax0lt1 | GIF version | ||
| Description: 0 is less than 1. Axiom
for real and complex numbers, derived from set
theory. This construction-dependent theorem should not be referenced
directly; instead, use ax-0lt1 8292.
The version of this axiom in the Metamath Proof Explorer reads 1 ≠ 0; here we change it to 0 <ℝ 1. The proof of 0 <ℝ 1 from 1 ≠ 0 in the Metamath Proof Explorer (accessed 12-Jan-2020) relies on real number trichotomy. (Contributed by Jim Kingdon, 12-Jan-2020.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| ax0lt1 | ⊢ 0 <ℝ 1 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0lt1sr 8139 | . . 3 ⊢ 0R <R 1R | |
| 2 | ltresr 8213 | . . 3 ⊢ (〈0R, 0R〉 <ℝ 〈1R, 0R〉 ↔ 0R <R 1R) | |
| 3 | 1, 2 | mpbir 146 | . 2 ⊢ 〈0R, 0R〉 <ℝ 〈1R, 0R〉 |
| 4 | df-0 8193 | . 2 ⊢ 0 = 〈0R, 0R〉 | |
| 5 | df-1 8194 | . 2 ⊢ 1 = 〈1R, 0R〉 | |
| 6 | 3, 4, 5 | 3brtr4i 4161 | 1 ⊢ 0 <ℝ 1 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: 〈cop 3712 class class class wbr 4131 0Rc0r 7672 1Rc1r 7673 <R cltr 7677 0cc0 8186 1c1 8187 <ℝ cltrr 8190 |
| 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-coll 4248 ax-sep 4251 ax-nul 4261 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-iinf 4737 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-3or 1010 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-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4132 df-opab 4194 df-mpt 4195 df-tr 4232 df-eprel 4436 df-id 4440 df-po 4443 df-iso 4444 df-iord 4513 df-on 4515 df-suc 4518 df-iom 4740 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-res 4788 df-ima 4789 df-iota 5340 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 df-fv 5388 df-ov 6091 df-oprab 6092 df-mpo 6093 df-1st 6378 df-2nd 6379 df-recs 6580 df-irdg 6645 df-1o 6691 df-2o 6692 df-oadd 6695 df-omul 6696 df-er 6811 df-ec 6813 df-qs 6817 df-ni 7678 df-pli 7679 df-mi 7680 df-lti 7681 df-plpq 7718 df-mpq 7719 df-enq 7721 df-nqqs 7722 df-plqqs 7723 df-mqqs 7724 df-1nqqs 7725 df-rq 7726 df-ltnqqs 7727 df-enq0 7798 df-nq0 7799 df-0nq0 7800 df-plq0 7801 df-mq0 7802 df-inp 7840 df-i1p 7841 df-iplp 7842 df-iltp 7844 df-enr 8100 df-nr 8101 df-ltr 8104 df-0r 8105 df-1r 8106 df-0 8193 df-1 8194 df-r 8196 df-lt 8199 |
| This theorem is used by: (None) |
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