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Theorem pltval 18253

Description: Less-than relation. (df-pss 3921 analog.) (Contributed by NM, 12-Oct-2011.)

**Hypotheses**
Ref	Expression
pltval.l	⊢ ≤ = (le‘𝐾)
pltval.s	⊢ < = (lt‘𝐾)

**Assertion**
Ref	Expression
pltval	⊢ ((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐶) → (𝑋 < 𝑌 ↔ (𝑋 ≤ 𝑌 ∧ 𝑋 ≠ 𝑌)))

**Proof of Theorem pltval**
Step	Hyp	Ref	Expression
1		pltval.l	. . . . 5 ⊢ ≤ = (le‘𝐾)
2		pltval.s	. . . . 5 ⊢ < = (lt‘𝐾)
3	1, 2	pltfval 18252	. . . 4 ⊢ (𝐾 ∈ 𝐴 → < = ( ≤ ∖ I ))
4	3	breqd 5109	. . 3 ⊢ (𝐾 ∈ 𝐴 → (𝑋 < 𝑌 ↔ 𝑋( ≤ ∖ I )𝑌))
5		brdif 5151	. . . 4 ⊢ (𝑋( ≤ ∖ I )𝑌 ↔ (𝑋 ≤ 𝑌 ∧ ¬ 𝑋 I 𝑌))
6		ideqg 5800	. . . . . . 7 ⊢ (𝑌 ∈ 𝐶 → (𝑋 I 𝑌 ↔ 𝑋 = 𝑌))
7	6	necon3bbid 2969	. . . . . 6 ⊢ (𝑌 ∈ 𝐶 → (¬ 𝑋 I 𝑌 ↔ 𝑋 ≠ 𝑌))
8	7	adantl 481	. . . . 5 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐶) → (¬ 𝑋 I 𝑌 ↔ 𝑋 ≠ 𝑌))
9	8	anbi2d 630	. . . 4 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐶) → ((𝑋 ≤ 𝑌 ∧ ¬ 𝑋 I 𝑌) ↔ (𝑋 ≤ 𝑌 ∧ 𝑋 ≠ 𝑌)))
10	5, 9	bitrid 283	. . 3 ⊢ ((𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐶) → (𝑋( ≤ ∖ I )𝑌 ↔ (𝑋 ≤ 𝑌 ∧ 𝑋 ≠ 𝑌)))
11	4, 10	sylan9bb 509	. 2 ⊢ ((𝐾 ∈ 𝐴 ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐶)) → (𝑋 < 𝑌 ↔ (𝑋 ≤ 𝑌 ∧ 𝑋 ≠ 𝑌)))
12	11	3impb 1114	1 ⊢ ((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐶) → (𝑋 < 𝑌 ↔ (𝑋 ≤ 𝑌 ∧ 𝑋 ≠ 𝑌)))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 ≠ wne 2932 ∖ cdif 3898 class class class wbr 5098 I cid 5518 ‘cfv 6492 lecple 17184 ltcplt 18231

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 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-iota 6448 df-fun 6494 df-fv 6500 df-plt 18251

This theorem is referenced by: pltle 18254 pltne 18255 pleval2i 18257 pltnle 18259 pltval3 18260 plttr 18263 latnlemlt 18395 latnle 18396 ipolt 18458 ogrpaddlt 20067 ogrpsublt 20071 ornglmullt 20802 orngrmullt 20803 orngmullt 20804 ofldlt1 20808 opltn0 39446 cvrval2 39530 cvrnbtwn2 39531 cvrnbtwn3 39532 cvrle 39534 cvrnbtwn4 39535 cvrne 39537 atlltn0 39562 hlrelat5N 39657 llnle 39774 lplnle 39796 llncvrlpln2 39813 lplncvrlvol2 39871 lhp2lt 40257 lautlt 40347

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