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Related theorems GIF version |
| Description: 'Less than' is a strict ordering. Note: do not shorten this with ltsor 4055, and do not use ltsor 4055 in complex number proofs, in order to maintain a "clean" derivation of all complex number proofs directly from postulates. |
| Ref | Expression |
|---|---|
| ltso | ⊢ < Or ℝ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | axlttri 4083 | . . . 4 ⊢ ((x ∈ ℝ ∧ y ∈ ℝ) → (x < y ↔ ¬ (x = y ∨ y < x))) | |
| 2 | 1 | 3adant3 599 | . . 3 ⊢ ((x ∈ ℝ ∧ y ∈ ℝ ∧ z ∈ ℝ) → (x < y ↔ ¬ (x = y ∨ y < x))) |
| 3 | axlttrn 4084 | . . 3 ⊢ ((x ∈ ℝ ∧ y ∈ ℝ ∧ z ∈ ℝ) → ((x < y ∧ y < z) → x < z)) | |
| 4 | 2, 3 | jca 236 | . 2 ⊢ ((x ∈ ℝ ∧ y ∈ ℝ ∧ z ∈ ℝ) → ((x < y ↔ ¬ (x = y ∨ y < x)) ∧ ((x < y ∧ y < z) → x < z))) |
| 5 | 4 | so 2152 | 1 ⊢ < Or ℝ |
| Colors of variables: wff set class |
| Syntax hints: ¬ wn 1 → wi 2 ↔ wb 127 ∨ wo 195 ∧ wa 196 ∧ w3a 581 = weq 797 ∈ wcel 1092 class class class wbr 2054 Or wor 2059 ℝcr 4027 < clt 4033 |
| This theorem is referenced by: lttri2t 4280 lttri3t 4281 ltnrt 4292 suprcl 4512 suprub 4513 suprlub 4514 suprcli 4516 suprlubi 4518 suprnubi 4519 sqrval 4729 sqr0 4730 sqrlem7 4737 sqrlem8 4738 sqrlem13 4743 sqrlem18 4748 projlem9 5201 projlem13 5205 projlem15 5207 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-un 1076 ax-pow 1077 ax-reg 1078 ax-inf 1079 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-3or 582 df-3an 583 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-ne 1192 df-ral 1205 df-rex 1206 df-reu 1207 df-rab 1208 df-v 1349 df-sbc 1441 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-pss 1494 df-nul 1708 df-if 1777 df-pw 1799 df-sn 1811 df-pr 1812 df-tp 1814 df-op 1815 df-uni 1920 df-int 1966 df-iun 1996 df-tr 2042 df-br 2063 df-opab 2098 df-eprel 2122 df-id 2125 df-po 2128 df-so 2138 df-fr 2169 df-we 2186 df-ord 2202 df-on 2203 df-lim 2204 df-suc 2205 df-om 2373 df-xp 2424 df-rel 2425 df-cnv 2426 df-co 2427 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fun 2432 df-fn 2433 df-f 2434 df-f1 2435 df-fv 2438 df-rdg 2970 df-opr 3003 df-oprab 3004 df-1o 3104 df-oadd 3106 df-omul 3107 df-er 3200 df-ec 3202 df-qs 3205 df-ni 3794 df-pli 3795 df-mi 3796 df-lti 3797 df-plpq 3829 df-mpq 3830 df-enq 3831 df-nq 3832 df-plq 3833 df-mq 3834 df-rq 3835 df-ltq 3836 df-1q 3837 df-np 3880 df-1p 3881 df-plp 3882 df-ltp 3884 df-enr 3960 df-nr 3961 df-ltr 3964 df-0r 3965 df-r 4038 df-lt 4041 |