pltle - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > pltle		Structured version Visualization version GIF version

Theorem pltle 18534

Description: "Less than" implies "less than or equal to". (pssss 4028 analog.) (Contributed by NM, 4-Dec-2011.)

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

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

**Proof of Theorem pltle**
Step	Hyp	Ref	Expression
1		pltval.l	. . . 4 ⊢ ≤ = (le‘𝐾)
2		pltval.s	. . . 4 ⊢ < = (lt‘𝐾)
3	1, 2	pltval 18533	. . 3 ⊢ ((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐶) → (𝑋 < 𝑌 ↔ (𝑋 ≤ 𝑌 ∧ 𝑋 ≠ 𝑌)))
4	3	simprbda 504	. 2 ⊢ (((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐶) ∧ 𝑋 < 𝑌) → 𝑋 ≤ 𝑌)
5	4	ex 418	1 ⊢ ((𝐾 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐶) → (𝑋 < 𝑌 → 𝑋 ≤ 𝑌))

Colors of variables: wff setvar class

This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 = wceq 1570 ∈ wcel 2147 ≠ wne 2959 class class class wbr 5106 ‘cfv 6558 lecple 17464 ltcplt 18511

This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pr 5395

This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-mpt 5190 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-iota 6512 df-fun 6560 df-fv 6566 df-plt 18531

This theorem is used by: pleval2 18538 pltnlt 18541 pltn2lp 18542 plttr 18543 pospo 18546 ogrpaddlt 20382 orngsqr 21153 ornglmullt 21156 orngrmullt 21157 isarchi3 33818 archirngz 33820 archiabllem2a 33825 atnlt 40562 cvlcvr1 40588 hlrelat 40651 hlrelat3 40661 cvratlem 40670 atltcvr 40684 atlelt 40687 llnnlt 40772 lplnnle2at 40790 lplnnlt 40814 lvolnle3at 40831 lvolnltN 40867 cdlemblem 41042 cdlemb 41043 lhpexle1 41257

W3C validator