Theorem nltle2tri 43533

Description: Negated extended trichotomy law for 'less than' and 'less than or equal to'. (Contributed by AV, 18-Jul-2020.)

Assertion

Ref	Expression
nltle2tri	⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → ¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶 ∧ 𝐶 ≤ 𝐴))

Proof of Theorem nltle2tri

Step	Hyp	Ref	Expression
1		xrltletr 12551	. 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶))
2		id 22	. . . . . . . . . 10 ⊢ (((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶) → ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶))
3	2	impcom 410	. . . . . . . . 9 ⊢ (((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∧ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶)) → 𝐴 < 𝐶)
4		xrltnle 10708	. . . . . . . . . . . . . 14 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (𝐴 < 𝐶 ↔ ¬ 𝐶 ≤ 𝐴))
5	4	3adant2 1127	. . . . . . . . . . . . 13 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (𝐴 < 𝐶 ↔ ¬ 𝐶 ≤ 𝐴))
6	5	biimpd 231	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (𝐴 < 𝐶 → ¬ 𝐶 ≤ 𝐴))
7	6	imp 409	. . . . . . . . . . 11 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) ∧ 𝐴 < 𝐶) → ¬ 𝐶 ≤ 𝐴)
8	7	olcd 870	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) ∧ 𝐴 < 𝐶) → (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴))
9	8	expcom 416	. . . . . . . . 9 ⊢ (𝐴 < 𝐶 → ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴)))
10	3, 9	syl 17	. . . . . . . 8 ⊢ (((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∧ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶)) → ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴)))
11	10	ex 415	. . . . . . 7 ⊢ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → (((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶) → ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴))))
12	11	com23 86	. . . . . 6 ⊢ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶) → (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴))))
13	12	impd 413	. . . . 5 ⊢ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) ∧ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶)) → (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴)))
14		id 22	. . . . . . 7 ⊢ (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → ¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶))
15	14	orcd 869	. . . . . 6 ⊢ (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴))
16	15	a1d 25	. . . . 5 ⊢ (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) ∧ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶)) → (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴)))
17	13, 16	pm2.61i 184	. . . 4 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) ∧ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶)) → (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴))
18		df-3an 1085	. . . . . 6 ⊢ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶 ∧ 𝐶 ≤ 𝐴) ↔ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∧ 𝐶 ≤ 𝐴))
19	18	notbii 322	. . . . 5 ⊢ (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶 ∧ 𝐶 ≤ 𝐴) ↔ ¬ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∧ 𝐶 ≤ 𝐴))
20		ianor 978	. . . . 5 ⊢ (¬ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∧ 𝐶 ≤ 𝐴) ↔ (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴))
21	19, 20	bitri 277	. . . 4 ⊢ (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶 ∧ 𝐶 ≤ 𝐴) ↔ (¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) ∨ ¬ 𝐶 ≤ 𝐴))
22	17, 21	sylibr 236	. . 3 ⊢ (((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) ∧ ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶)) → ¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶 ∧ 𝐶 ≤ 𝐴))
23	22	ex 415	. 2 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → (((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶) → ¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶 ∧ 𝐶 ≤ 𝐴)))
24	1, 23	mpd 15	1 ⊢ ((𝐴 ∈ ℝ* ∧ 𝐵 ∈ ℝ* ∧ 𝐶 ∈ ℝ*) → ¬ (𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶 ∧ 𝐶 ≤ 𝐴))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 208   ∧ wa 398   ∨ wo 843   ∧ w3a 1083   ∈ wcel 2114   class class class wbr 5066  ℝ^*cxr 10674   < clt 10675   ≤ cle 10676

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330  ax-un 7461  ax-cnex 10593  ax-resscn 10594  ax-pre-lttri 10611  ax-pre-lttrn 10612

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-nel 3124  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4839  df-br 5067  df-opab 5129  df-mpt 5147  df-id 5460  df-po 5474  df-so 5475  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-iota 6314  df-fun 6357  df-fn 6358  df-f 6359  df-f1 6360  df-fo 6361  df-f1o 6362  df-fv 6363  df-er 8289  df-en 8510  df-dom 8511  df-sdom 8512  df-pnf 10677  df-mnf 10678  df-xr 10679  df-ltxr 10680  df-le 10681

This theorem is referenced by:  icceuelpart  43616