Mathbox for Glauco Siliprandi |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > xrlttri5d | Structured version Visualization version GIF version |
Description: Not equal and not larger implies smaller. (Contributed by Glauco Siliprandi, 11-Dec-2019.) |
Ref | Expression |
---|---|
xrlttri5d.a | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
xrlttri5d.b | ⊢ (𝜑 → 𝐵 ∈ ℝ*) |
xrlttri5d.aneb | ⊢ (𝜑 → 𝐴 ≠ 𝐵) |
xrlttri5d.nlt | ⊢ (𝜑 → ¬ 𝐵 < 𝐴) |
Ref | Expression |
---|---|
xrlttri5d | ⊢ (𝜑 → 𝐴 < 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xrlttri5d.aneb | . . . . . . 7 ⊢ (𝜑 → 𝐴 ≠ 𝐵) | |
2 | 1 | neneqd 2949 | . . . . . 6 ⊢ (𝜑 → ¬ 𝐴 = 𝐵) |
3 | xrlttri5d.a | . . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
4 | xrlttri5d.b | . . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ ℝ*) | |
5 | xrlttri3 12859 | . . . . . . 7 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ*) → (𝐴 = 𝐵 ↔ (¬ 𝐴 < 𝐵 ∧ ¬ 𝐵 < 𝐴))) | |
6 | 3, 4, 5 | syl2anc 583 | . . . . . 6 ⊢ (𝜑 → (𝐴 = 𝐵 ↔ (¬ 𝐴 < 𝐵 ∧ ¬ 𝐵 < 𝐴))) |
7 | 2, 6 | mtbid 323 | . . . . 5 ⊢ (𝜑 → ¬ (¬ 𝐴 < 𝐵 ∧ ¬ 𝐵 < 𝐴)) |
8 | oran 986 | . . . . 5 ⊢ ((𝐴 < 𝐵 ∨ 𝐵 < 𝐴) ↔ ¬ (¬ 𝐴 < 𝐵 ∧ ¬ 𝐵 < 𝐴)) | |
9 | 7, 8 | sylibr 233 | . . . 4 ⊢ (𝜑 → (𝐴 < 𝐵 ∨ 𝐵 < 𝐴)) |
10 | xrlttri5d.nlt | . . . 4 ⊢ (𝜑 → ¬ 𝐵 < 𝐴) | |
11 | 9, 10 | jca 511 | . . 3 ⊢ (𝜑 → ((𝐴 < 𝐵 ∨ 𝐵 < 𝐴) ∧ ¬ 𝐵 < 𝐴)) |
12 | pm5.61 997 | . . 3 ⊢ (((𝐴 < 𝐵 ∨ 𝐵 < 𝐴) ∧ ¬ 𝐵 < 𝐴) ↔ (𝐴 < 𝐵 ∧ ¬ 𝐵 < 𝐴)) | |
13 | 11, 12 | sylib 217 | . 2 ⊢ (𝜑 → (𝐴 < 𝐵 ∧ ¬ 𝐵 < 𝐴)) |
14 | 13 | simpld 494 | 1 ⊢ (𝜑 → 𝐴 < 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 ∨ wo 843 = wceq 1541 ∈ wcel 2109 ≠ wne 2944 class class class wbr 5078 ℝ*cxr 10992 < clt 10993 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 ax-cnex 10911 ax-resscn 10912 ax-pre-lttri 10929 ax-pre-lttrn 10930 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4845 df-br 5079 df-opab 5141 df-mpt 5162 df-id 5488 df-po 5502 df-so 5503 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-er 8472 df-en 8708 df-dom 8709 df-sdom 8710 df-pnf 10995 df-mnf 10996 df-xr 10997 df-ltxr 10998 |
This theorem is referenced by: lttri5d 42792 |
Copyright terms: Public domain | W3C validator |