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Description: Lemma for lbsext . lbsextlem3 satisfies the conditions for the application of Zorn's lemma zorn (thus invoking AC), and so there is a maximal linearly independent set extending C . Here we prove that such a set is a basis. (Contributed by Mario Carneiro, 25-Jun-2014)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | lbsext.v | ⊢ 𝑉 = ( Base ‘ 𝑊 ) | |
| lbsext.j | ⊢ 𝐽 = ( LBasis ‘ 𝑊 ) | ||
| lbsext.n | ⊢ 𝑁 = ( LSpan ‘ 𝑊 ) | ||
| lbsext.w | ⊢ ( 𝜑 → 𝑊 ∈ LVec ) | ||
| lbsext.c | ⊢ ( 𝜑 → 𝐶 ⊆ 𝑉 ) | ||
| lbsext.x | ⊢ ( 𝜑 → ∀ 𝑥 ∈ 𝐶 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝐶 ∖ { 𝑥 } ) ) ) | ||
| lbsext.s | ⊢ 𝑆 = { 𝑧 ∈ 𝒫 𝑉 ∣ ( 𝐶 ⊆ 𝑧 ∧ ∀ 𝑥 ∈ 𝑧 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) ) } | ||
| lbsext.k | ⊢ ( 𝜑 → 𝒫 𝑉 ∈ dom card ) | ||
| Assertion | lbsextlem4 | ⊢ ( 𝜑 → ∃ 𝑠 ∈ 𝐽 𝐶 ⊆ 𝑠 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lbsext.v | ⊢ 𝑉 = ( Base ‘ 𝑊 ) | |
| 2 | lbsext.j | ⊢ 𝐽 = ( LBasis ‘ 𝑊 ) | |
| 3 | lbsext.n | ⊢ 𝑁 = ( LSpan ‘ 𝑊 ) | |
| 4 | lbsext.w | ⊢ ( 𝜑 → 𝑊 ∈ LVec ) | |
| 5 | lbsext.c | ⊢ ( 𝜑 → 𝐶 ⊆ 𝑉 ) | |
| 6 | lbsext.x | ⊢ ( 𝜑 → ∀ 𝑥 ∈ 𝐶 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝐶 ∖ { 𝑥 } ) ) ) | |
| 7 | lbsext.s | ⊢ 𝑆 = { 𝑧 ∈ 𝒫 𝑉 ∣ ( 𝐶 ⊆ 𝑧 ∧ ∀ 𝑥 ∈ 𝑧 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) ) } | |
| 8 | lbsext.k | ⊢ ( 𝜑 → 𝒫 𝑉 ∈ dom card ) | |
| 9 | 7 | ssrab3 | ⊢ 𝑆 ⊆ 𝒫 𝑉 |
| 10 | ssnum | ⊢ ( ( 𝒫 𝑉 ∈ dom card ∧ 𝑆 ⊆ 𝒫 𝑉 ) → 𝑆 ∈ dom card ) | |
| 11 | 8 9 10 | sylancl | ⊢ ( 𝜑 → 𝑆 ∈ dom card ) |
| 12 | 1 2 3 4 5 6 7 | lbsextlem1 | ⊢ ( 𝜑 → 𝑆 ≠ ∅ ) |
| 13 | 4 | adantr | ⊢ ( ( 𝜑 ∧ ( 𝑦 ⊆ 𝑆 ∧ 𝑦 ≠ ∅ ∧ [⊊] Or 𝑦 ) ) → 𝑊 ∈ LVec ) |
| 14 | 5 | adantr | ⊢ ( ( 𝜑 ∧ ( 𝑦 ⊆ 𝑆 ∧ 𝑦 ≠ ∅ ∧ [⊊] Or 𝑦 ) ) → 𝐶 ⊆ 𝑉 ) |
| 15 | 6 | adantr | ⊢ ( ( 𝜑 ∧ ( 𝑦 ⊆ 𝑆 ∧ 𝑦 ≠ ∅ ∧ [⊊] Or 𝑦 ) ) → ∀ 𝑥 ∈ 𝐶 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝐶 ∖ { 𝑥 } ) ) ) |
| 16 | eqid | ⊢ ( LSubSp ‘ 𝑊 ) = ( LSubSp ‘ 𝑊 ) | |
| 17 | simpr1 | ⊢ ( ( 𝜑 ∧ ( 𝑦 ⊆ 𝑆 ∧ 𝑦 ≠ ∅ ∧ [⊊] Or 𝑦 ) ) → 𝑦 ⊆ 𝑆 ) | |
| 18 | simpr2 | ⊢ ( ( 𝜑 ∧ ( 𝑦 ⊆ 𝑆 ∧ 𝑦 ≠ ∅ ∧ [⊊] Or 𝑦 ) ) → 𝑦 ≠ ∅ ) | |
| 19 | simpr3 | ⊢ ( ( 𝜑 ∧ ( 𝑦 ⊆ 𝑆 ∧ 𝑦 ≠ ∅ ∧ [⊊] Or 𝑦 ) ) → [⊊] Or 𝑦 ) | |
| 20 | eqid | ⊢ ∪ 𝑢 ∈ 𝑦 ( 𝑁 ‘ ( 𝑢 ∖ { 𝑥 } ) ) = ∪ 𝑢 ∈ 𝑦 ( 𝑁 ‘ ( 𝑢 ∖ { 𝑥 } ) ) | |
| 21 | 1 2 3 13 14 15 7 16 17 18 19 20 | lbsextlem3 | ⊢ ( ( 𝜑 ∧ ( 𝑦 ⊆ 𝑆 ∧ 𝑦 ≠ ∅ ∧ [⊊] Or 𝑦 ) ) → ∪ 𝑦 ∈ 𝑆 ) |
| 22 | 21 | ex | ⊢ ( 𝜑 → ( ( 𝑦 ⊆ 𝑆 ∧ 𝑦 ≠ ∅ ∧ [⊊] Or 𝑦 ) → ∪ 𝑦 ∈ 𝑆 ) ) |
| 23 | 22 | alrimiv | ⊢ ( 𝜑 → ∀ 𝑦 ( ( 𝑦 ⊆ 𝑆 ∧ 𝑦 ≠ ∅ ∧ [⊊] Or 𝑦 ) → ∪ 𝑦 ∈ 𝑆 ) ) |
| 24 | zornn0g | ⊢ ( ( 𝑆 ∈ dom card ∧ 𝑆 ≠ ∅ ∧ ∀ 𝑦 ( ( 𝑦 ⊆ 𝑆 ∧ 𝑦 ≠ ∅ ∧ [⊊] Or 𝑦 ) → ∪ 𝑦 ∈ 𝑆 ) ) → ∃ 𝑠 ∈ 𝑆 ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) | |
| 25 | 11 12 23 24 | syl3anc | ⊢ ( 𝜑 → ∃ 𝑠 ∈ 𝑆 ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) |
| 26 | simprl | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → 𝑠 ∈ 𝑆 ) | |
| 27 | sseq2 | ⊢ ( 𝑧 = 𝑠 → ( 𝐶 ⊆ 𝑧 ↔ 𝐶 ⊆ 𝑠 ) ) | |
| 28 | difeq1 | ⊢ ( 𝑧 = 𝑠 → ( 𝑧 ∖ { 𝑥 } ) = ( 𝑠 ∖ { 𝑥 } ) ) | |
| 29 | 28 | fveq2d | ⊢ ( 𝑧 = 𝑠 → ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) = ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) |
| 30 | 29 | eleq2d | ⊢ ( 𝑧 = 𝑠 → ( 𝑥 ∈ ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) ↔ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) |
| 31 | 30 | notbid | ⊢ ( 𝑧 = 𝑠 → ( ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) ↔ ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) |
| 32 | 31 | raleqbi1dv | ⊢ ( 𝑧 = 𝑠 → ( ∀ 𝑥 ∈ 𝑧 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) ↔ ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) |
| 33 | 27 32 | anbi12d | ⊢ ( 𝑧 = 𝑠 → ( ( 𝐶 ⊆ 𝑧 ∧ ∀ 𝑥 ∈ 𝑧 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) ) ↔ ( 𝐶 ⊆ 𝑠 ∧ ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) ) |
| 34 | 33 7 | elrab2 | ⊢ ( 𝑠 ∈ 𝑆 ↔ ( 𝑠 ∈ 𝒫 𝑉 ∧ ( 𝐶 ⊆ 𝑠 ∧ ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) ) |
| 35 | 26 34 | sylib | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → ( 𝑠 ∈ 𝒫 𝑉 ∧ ( 𝐶 ⊆ 𝑠 ∧ ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) ) |
| 36 | 35 | simpld | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → 𝑠 ∈ 𝒫 𝑉 ) |
| 37 | 36 | elpwid | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → 𝑠 ⊆ 𝑉 ) |
| 38 | lveclmod | ⊢ ( 𝑊 ∈ LVec → 𝑊 ∈ LMod ) | |
| 39 | 4 38 | syl | ⊢ ( 𝜑 → 𝑊 ∈ LMod ) |
| 40 | 39 | adantr | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → 𝑊 ∈ LMod ) |
| 41 | 1 3 | lspssv | ⊢ ( ( 𝑊 ∈ LMod ∧ 𝑠 ⊆ 𝑉 ) → ( 𝑁 ‘ 𝑠 ) ⊆ 𝑉 ) |
| 42 | 40 37 41 | syl2anc | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → ( 𝑁 ‘ 𝑠 ) ⊆ 𝑉 ) |
| 43 | ssun1 | ⊢ 𝑠 ⊆ ( 𝑠 ∪ { 𝑤 } ) | |
| 44 | 43 | a1i | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → 𝑠 ⊆ ( 𝑠 ∪ { 𝑤 } ) ) |
| 45 | ssun2 | ⊢ { 𝑤 } ⊆ ( 𝑠 ∪ { 𝑤 } ) | |
| 46 | vsnid | ⊢ 𝑤 ∈ { 𝑤 } | |
| 47 | 45 46 | sselii | ⊢ 𝑤 ∈ ( 𝑠 ∪ { 𝑤 } ) |
| 48 | 1 3 | lspssid | ⊢ ( ( 𝑊 ∈ LMod ∧ 𝑠 ⊆ 𝑉 ) → 𝑠 ⊆ ( 𝑁 ‘ 𝑠 ) ) |
| 49 | 40 37 48 | syl2anc | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → 𝑠 ⊆ ( 𝑁 ‘ 𝑠 ) ) |
| 50 | 49 | adantr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → 𝑠 ⊆ ( 𝑁 ‘ 𝑠 ) ) |
| 51 | eldifn | ⊢ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) → ¬ 𝑤 ∈ ( 𝑁 ‘ 𝑠 ) ) | |
| 52 | 51 | adantl | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ¬ 𝑤 ∈ ( 𝑁 ‘ 𝑠 ) ) |
| 53 | 50 52 | ssneldd | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ¬ 𝑤 ∈ 𝑠 ) |
| 54 | nelne1 | ⊢ ( ( 𝑤 ∈ ( 𝑠 ∪ { 𝑤 } ) ∧ ¬ 𝑤 ∈ 𝑠 ) → ( 𝑠 ∪ { 𝑤 } ) ≠ 𝑠 ) | |
| 55 | 47 53 54 | sylancr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ( 𝑠 ∪ { 𝑤 } ) ≠ 𝑠 ) |
| 56 | 55 | necomd | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → 𝑠 ≠ ( 𝑠 ∪ { 𝑤 } ) ) |
| 57 | df-pss | ⊢ ( 𝑠 ⊊ ( 𝑠 ∪ { 𝑤 } ) ↔ ( 𝑠 ⊆ ( 𝑠 ∪ { 𝑤 } ) ∧ 𝑠 ≠ ( 𝑠 ∪ { 𝑤 } ) ) ) | |
| 58 | 44 56 57 | sylanbrc | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → 𝑠 ⊊ ( 𝑠 ∪ { 𝑤 } ) ) |
| 59 | psseq2 | ⊢ ( 𝑡 = ( 𝑠 ∪ { 𝑤 } ) → ( 𝑠 ⊊ 𝑡 ↔ 𝑠 ⊊ ( 𝑠 ∪ { 𝑤 } ) ) ) | |
| 60 | 59 | notbid | ⊢ ( 𝑡 = ( 𝑠 ∪ { 𝑤 } ) → ( ¬ 𝑠 ⊊ 𝑡 ↔ ¬ 𝑠 ⊊ ( 𝑠 ∪ { 𝑤 } ) ) ) |
| 61 | simplrr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) | |
| 62 | 37 | adantr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → 𝑠 ⊆ 𝑉 ) |
| 63 | eldifi | ⊢ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) → 𝑤 ∈ 𝑉 ) | |
| 64 | 63 | adantl | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → 𝑤 ∈ 𝑉 ) |
| 65 | 64 | snssd | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → { 𝑤 } ⊆ 𝑉 ) |
| 66 | 62 65 | unssd | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ( 𝑠 ∪ { 𝑤 } ) ⊆ 𝑉 ) |
| 67 | 1 | fvexi | ⊢ 𝑉 ∈ V |
| 68 | 67 | elpw2 | ⊢ ( ( 𝑠 ∪ { 𝑤 } ) ∈ 𝒫 𝑉 ↔ ( 𝑠 ∪ { 𝑤 } ) ⊆ 𝑉 ) |
| 69 | 66 68 | sylibr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ( 𝑠 ∪ { 𝑤 } ) ∈ 𝒫 𝑉 ) |
| 70 | 35 | simprd | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → ( 𝐶 ⊆ 𝑠 ∧ ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) |
| 71 | 70 | simpld | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → 𝐶 ⊆ 𝑠 ) |
| 72 | 71 | adantr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → 𝐶 ⊆ 𝑠 ) |
| 73 | 72 43 | sstrdi | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → 𝐶 ⊆ ( 𝑠 ∪ { 𝑤 } ) ) |
| 74 | 4 | ad2antrr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → 𝑊 ∈ LVec ) |
| 75 | 37 | adantr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → 𝑠 ⊆ 𝑉 ) |
| 76 | 75 | ssdifssd | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ( 𝑠 ∖ { 𝑥 } ) ⊆ 𝑉 ) |
| 77 | 64 | adantrr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → 𝑤 ∈ 𝑉 ) |
| 78 | simprrr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) | |
| 79 | difundir | ⊢ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) = ( ( 𝑠 ∖ { 𝑥 } ) ∪ ( { 𝑤 } ∖ { 𝑥 } ) ) | |
| 80 | simprrl | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → 𝑥 ∈ 𝑠 ) | |
| 81 | 53 | adantrr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ¬ 𝑤 ∈ 𝑠 ) |
| 82 | nelne2 | ⊢ ( ( 𝑥 ∈ 𝑠 ∧ ¬ 𝑤 ∈ 𝑠 ) → 𝑥 ≠ 𝑤 ) | |
| 83 | 80 81 82 | syl2anc | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → 𝑥 ≠ 𝑤 ) |
| 84 | nelsn | ⊢ ( 𝑥 ≠ 𝑤 → ¬ 𝑥 ∈ { 𝑤 } ) | |
| 85 | 83 84 | syl | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ¬ 𝑥 ∈ { 𝑤 } ) |
| 86 | disjsn | ⊢ ( ( { 𝑤 } ∩ { 𝑥 } ) = ∅ ↔ ¬ 𝑥 ∈ { 𝑤 } ) | |
| 87 | 85 86 | sylibr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ( { 𝑤 } ∩ { 𝑥 } ) = ∅ ) |
| 88 | disj3 | ⊢ ( ( { 𝑤 } ∩ { 𝑥 } ) = ∅ ↔ { 𝑤 } = ( { 𝑤 } ∖ { 𝑥 } ) ) | |
| 89 | 87 88 | sylib | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → { 𝑤 } = ( { 𝑤 } ∖ { 𝑥 } ) ) |
| 90 | 89 | uneq2d | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑤 } ) = ( ( 𝑠 ∖ { 𝑥 } ) ∪ ( { 𝑤 } ∖ { 𝑥 } ) ) ) |
| 91 | 79 90 | eqtr4id | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) = ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑤 } ) ) |
| 92 | 91 | fveq2d | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) = ( 𝑁 ‘ ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑤 } ) ) ) |
| 93 | 78 92 | eleqtrd | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑤 } ) ) ) |
| 94 | 70 | simprd | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) |
| 95 | 94 | adantr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) |
| 96 | rsp | ⊢ ( ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) → ( 𝑥 ∈ 𝑠 → ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) | |
| 97 | 95 80 96 | sylc | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) |
| 98 | 93 97 | eldifd | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → 𝑥 ∈ ( ( 𝑁 ‘ ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑤 } ) ) ∖ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) |
| 99 | 1 16 3 | lspsolv | ⊢ ( ( 𝑊 ∈ LVec ∧ ( ( 𝑠 ∖ { 𝑥 } ) ⊆ 𝑉 ∧ 𝑤 ∈ 𝑉 ∧ 𝑥 ∈ ( ( 𝑁 ‘ ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑤 } ) ) ∖ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) ) → 𝑤 ∈ ( 𝑁 ‘ ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑥 } ) ) ) |
| 100 | 74 76 77 98 99 | syl13anc | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → 𝑤 ∈ ( 𝑁 ‘ ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑥 } ) ) ) |
| 101 | undif1 | ⊢ ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑥 } ) = ( 𝑠 ∪ { 𝑥 } ) | |
| 102 | 80 | snssd | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → { 𝑥 } ⊆ 𝑠 ) |
| 103 | ssequn2 | ⊢ ( { 𝑥 } ⊆ 𝑠 ↔ ( 𝑠 ∪ { 𝑥 } ) = 𝑠 ) | |
| 104 | 102 103 | sylib | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ( 𝑠 ∪ { 𝑥 } ) = 𝑠 ) |
| 105 | 101 104 | eqtrid | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑥 } ) = 𝑠 ) |
| 106 | 105 | fveq2d | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → ( 𝑁 ‘ ( ( 𝑠 ∖ { 𝑥 } ) ∪ { 𝑥 } ) ) = ( 𝑁 ‘ 𝑠 ) ) |
| 107 | 100 106 | eleqtrd | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ ( 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ∧ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) → 𝑤 ∈ ( 𝑁 ‘ 𝑠 ) ) |
| 108 | 107 | expr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ( ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) → 𝑤 ∈ ( 𝑁 ‘ 𝑠 ) ) ) |
| 109 | 52 108 | mtod | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ¬ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) |
| 110 | imnan | ⊢ ( ( 𝑥 ∈ 𝑠 → ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ↔ ¬ ( 𝑥 ∈ 𝑠 ∧ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) | |
| 111 | 109 110 | sylibr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ( 𝑥 ∈ 𝑠 → ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) |
| 112 | 111 | ralrimiv | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) |
| 113 | difssd | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → ( 𝑠 ∖ { 𝑤 } ) ⊆ 𝑠 ) | |
| 114 | 1 3 | lspss | ⊢ ( ( 𝑊 ∈ LMod ∧ 𝑠 ⊆ 𝑉 ∧ ( 𝑠 ∖ { 𝑤 } ) ⊆ 𝑠 ) → ( 𝑁 ‘ ( 𝑠 ∖ { 𝑤 } ) ) ⊆ ( 𝑁 ‘ 𝑠 ) ) |
| 115 | 40 37 113 114 | syl3anc | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → ( 𝑁 ‘ ( 𝑠 ∖ { 𝑤 } ) ) ⊆ ( 𝑁 ‘ 𝑠 ) ) |
| 116 | 115 | adantr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ( 𝑁 ‘ ( 𝑠 ∖ { 𝑤 } ) ) ⊆ ( 𝑁 ‘ 𝑠 ) ) |
| 117 | 116 52 | ssneldd | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ¬ 𝑤 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑤 } ) ) ) |
| 118 | vex | ⊢ 𝑤 ∈ V | |
| 119 | id | ⊢ ( 𝑥 = 𝑤 → 𝑥 = 𝑤 ) | |
| 120 | sneq | ⊢ ( 𝑥 = 𝑤 → { 𝑥 } = { 𝑤 } ) | |
| 121 | 120 | difeq2d | ⊢ ( 𝑥 = 𝑤 → ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) = ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑤 } ) ) |
| 122 | difun2 | ⊢ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑤 } ) = ( 𝑠 ∖ { 𝑤 } ) | |
| 123 | 121 122 | eqtrdi | ⊢ ( 𝑥 = 𝑤 → ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) = ( 𝑠 ∖ { 𝑤 } ) ) |
| 124 | 123 | fveq2d | ⊢ ( 𝑥 = 𝑤 → ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) = ( 𝑁 ‘ ( 𝑠 ∖ { 𝑤 } ) ) ) |
| 125 | 119 124 | eleq12d | ⊢ ( 𝑥 = 𝑤 → ( 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ↔ 𝑤 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑤 } ) ) ) ) |
| 126 | 125 | notbid | ⊢ ( 𝑥 = 𝑤 → ( ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ↔ ¬ 𝑤 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑤 } ) ) ) ) |
| 127 | 118 126 | ralsn | ⊢ ( ∀ 𝑥 ∈ { 𝑤 } ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ↔ ¬ 𝑤 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑤 } ) ) ) |
| 128 | 117 127 | sylibr | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ∀ 𝑥 ∈ { 𝑤 } ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) |
| 129 | ralun | ⊢ ( ( ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ∧ ∀ 𝑥 ∈ { 𝑤 } ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) → ∀ 𝑥 ∈ ( 𝑠 ∪ { 𝑤 } ) ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) | |
| 130 | 112 128 129 | syl2anc | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ∀ 𝑥 ∈ ( 𝑠 ∪ { 𝑤 } ) ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) |
| 131 | 73 130 | jca | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ( 𝐶 ⊆ ( 𝑠 ∪ { 𝑤 } ) ∧ ∀ 𝑥 ∈ ( 𝑠 ∪ { 𝑤 } ) ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) |
| 132 | sseq2 | ⊢ ( 𝑧 = ( 𝑠 ∪ { 𝑤 } ) → ( 𝐶 ⊆ 𝑧 ↔ 𝐶 ⊆ ( 𝑠 ∪ { 𝑤 } ) ) ) | |
| 133 | difeq1 | ⊢ ( 𝑧 = ( 𝑠 ∪ { 𝑤 } ) → ( 𝑧 ∖ { 𝑥 } ) = ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) | |
| 134 | 133 | fveq2d | ⊢ ( 𝑧 = ( 𝑠 ∪ { 𝑤 } ) → ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) = ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) |
| 135 | 134 | eleq2d | ⊢ ( 𝑧 = ( 𝑠 ∪ { 𝑤 } ) → ( 𝑥 ∈ ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) ↔ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) |
| 136 | 135 | notbid | ⊢ ( 𝑧 = ( 𝑠 ∪ { 𝑤 } ) → ( ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) ↔ ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) |
| 137 | 136 | raleqbi1dv | ⊢ ( 𝑧 = ( 𝑠 ∪ { 𝑤 } ) → ( ∀ 𝑥 ∈ 𝑧 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) ↔ ∀ 𝑥 ∈ ( 𝑠 ∪ { 𝑤 } ) ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) |
| 138 | 132 137 | anbi12d | ⊢ ( 𝑧 = ( 𝑠 ∪ { 𝑤 } ) → ( ( 𝐶 ⊆ 𝑧 ∧ ∀ 𝑥 ∈ 𝑧 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑧 ∖ { 𝑥 } ) ) ) ↔ ( 𝐶 ⊆ ( 𝑠 ∪ { 𝑤 } ) ∧ ∀ 𝑥 ∈ ( 𝑠 ∪ { 𝑤 } ) ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) |
| 139 | 138 7 | elrab2 | ⊢ ( ( 𝑠 ∪ { 𝑤 } ) ∈ 𝑆 ↔ ( ( 𝑠 ∪ { 𝑤 } ) ∈ 𝒫 𝑉 ∧ ( 𝐶 ⊆ ( 𝑠 ∪ { 𝑤 } ) ∧ ∀ 𝑥 ∈ ( 𝑠 ∪ { 𝑤 } ) ¬ 𝑥 ∈ ( 𝑁 ‘ ( ( 𝑠 ∪ { 𝑤 } ) ∖ { 𝑥 } ) ) ) ) ) |
| 140 | 69 131 139 | sylanbrc | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ( 𝑠 ∪ { 𝑤 } ) ∈ 𝑆 ) |
| 141 | 60 61 140 | rspcdva | ⊢ ( ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) ∧ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) → ¬ 𝑠 ⊊ ( 𝑠 ∪ { 𝑤 } ) ) |
| 142 | 58 141 | pm2.65da | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → ¬ 𝑤 ∈ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) ) |
| 143 | 142 | eq0rdv | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) = ∅ ) |
| 144 | ssdif0 | ⊢ ( 𝑉 ⊆ ( 𝑁 ‘ 𝑠 ) ↔ ( 𝑉 ∖ ( 𝑁 ‘ 𝑠 ) ) = ∅ ) | |
| 145 | 143 144 | sylibr | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → 𝑉 ⊆ ( 𝑁 ‘ 𝑠 ) ) |
| 146 | 42 145 | eqssd | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → ( 𝑁 ‘ 𝑠 ) = 𝑉 ) |
| 147 | 4 | adantr | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → 𝑊 ∈ LVec ) |
| 148 | 1 2 3 | islbs2 | ⊢ ( 𝑊 ∈ LVec → ( 𝑠 ∈ 𝐽 ↔ ( 𝑠 ⊆ 𝑉 ∧ ( 𝑁 ‘ 𝑠 ) = 𝑉 ∧ ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) ) |
| 149 | 147 148 | syl | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → ( 𝑠 ∈ 𝐽 ↔ ( 𝑠 ⊆ 𝑉 ∧ ( 𝑁 ‘ 𝑠 ) = 𝑉 ∧ ∀ 𝑥 ∈ 𝑠 ¬ 𝑥 ∈ ( 𝑁 ‘ ( 𝑠 ∖ { 𝑥 } ) ) ) ) ) |
| 150 | 37 146 94 149 | mpbir3and | ⊢ ( ( 𝜑 ∧ ( 𝑠 ∈ 𝑆 ∧ ∀ 𝑡 ∈ 𝑆 ¬ 𝑠 ⊊ 𝑡 ) ) → 𝑠 ∈ 𝐽 ) |
| 151 | 25 150 71 | reximssdv | ⊢ ( 𝜑 → ∃ 𝑠 ∈ 𝐽 𝐶 ⊆ 𝑠 ) |