Theorem lcvpss 36162

Description: The covers relation implies proper subset. (cvpss 30064 analog.) (Contributed by NM, 7-Jan-2015.)

Hypotheses

Ref	Expression
lcvfbr.s	⊢ 𝑆 = (LSubSp‘𝑊)
lcvfbr.c	⊢ 𝐶 = ( ⋖L ‘𝑊)
lcvfbr.w	⊢ (𝜑 → 𝑊 ∈ 𝑋)
lcvfbr.t	⊢ (𝜑 → 𝑇 ∈ 𝑆)
lcvfbr.u	⊢ (𝜑 → 𝑈 ∈ 𝑆)
lcvpss.d	⊢ (𝜑 → 𝑇𝐶𝑈)

Assertion

Ref	Expression
lcvpss	⊢ (𝜑 → 𝑇 ⊊ 𝑈)

Proof of Theorem lcvpss

Dummy variable 𝑠 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		lcvpss.d	. . 3 ⊢ (𝜑 → 𝑇𝐶𝑈)
2		lcvfbr.s	. . . 4 ⊢ 𝑆 = (LSubSp‘𝑊)
3		lcvfbr.c	. . . 4 ⊢ 𝐶 = ( ⋖L ‘𝑊)
4		lcvfbr.w	. . . 4 ⊢ (𝜑 → 𝑊 ∈ 𝑋)
5		lcvfbr.t	. . . 4 ⊢ (𝜑 → 𝑇 ∈ 𝑆)
6		lcvfbr.u	. . . 4 ⊢ (𝜑 → 𝑈 ∈ 𝑆)
7	2, 3, 4, 5, 6	lcvbr 36159	. . 3 ⊢ (𝜑 → (𝑇𝐶𝑈 ↔ (𝑇 ⊊ 𝑈 ∧ ¬ ∃𝑠 ∈ 𝑆 (𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈))))
8	1, 7	mpbid 234	. 2 ⊢ (𝜑 → (𝑇 ⊊ 𝑈 ∧ ¬ ∃𝑠 ∈ 𝑆 (𝑇 ⊊ 𝑠 ∧ 𝑠 ⊊ 𝑈)))
9	8	simpld 497	1 ⊢ (𝜑 → 𝑇 ⊊ 𝑈)

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 398   = wceq 1537   ∈ wcel 2114  ∃wrex 3141   ⊊ wpss 3939   class class class wbr 5068  ‘cfv 6357  LSubSpclss 19705   ⋖_L clcv 36156

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 2795  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332  ax-un 7463

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ne 3019  df-ral 3145  df-rex 3146  df-rab 3149  df-v 3498  df-sbc 3775  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-pss 3956  df-nul 4294  df-if 4470  df-pw 4543  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-br 5069  df-opab 5131  df-mpt 5149  df-id 5462  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-iota 6316  df-fun 6359  df-fv 6365  df-lcv 36157

This theorem is referenced by:  lcvntr  36164  lcvat  36168  lsatcveq0  36170  lsat0cv  36171  lcvexchlem4  36175  lcvexchlem5  36176  lcv1  36179  lsatexch  36181  lsatcvat2  36189  islshpcv  36191