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| Type | Label | Description |
|---|---|---|
| Statement | ||
| Theorem | shsupclt 9301 | Closure of the subspace supremum of set of subsets of Hilbert space. |
| ⊢ (A ⊆ ℘ ℋ → (span ‘∪A) ∈ Sℋ ) | ||
| Theorem | hsupclt 9302 | Closure of supremum of set of subsets of Hilbert space. Note that the supremum belongs to Cℋ even if the subsets do not. |
| ⊢ (A ⊆ ℘ ℋ → ( ∨ℋ ‘A) ∈ Cℋ ) | ||
| Theorem | chsupclt 9303 | Closure of supremum of subset of Cℋ. Definition of supremum in Proposition 1 of [Kalmbach] p. 65. Shows that Cℋ is a complete lattice. Also part of Definition 3.4-1 in [MegillPavicic] p. 2345 (PDF p. 8). |
| ⊢ (A ⊆ Cℋ → ( ∨ℋ ‘A) ∈ Cℋ ) | ||
| Theorem | hsupss 9304 | Subset relation for supremum of Hilbert space subsets. |
| ⊢ ((A ⊆ ℘ ℋ ⋀ B ⊆ ℘ ℋ ) → (A ⊆ B → ( ∨ℋ ‘A) ⊆ ( ∨ℋ ‘B))) | ||
| Theorem | chsupss 9305 | Subset relation for supremum of subset of Cℋ. |
| ⊢ ((A ⊆ Cℋ ⋀ B ⊆ Cℋ ) → (A ⊆ B → ( ∨ℋ ‘A) ⊆ ( ∨ℋ ‘B))) | ||
| Theorem | chsupid 9306 | A subspace is the supremum of all smaller subspaces. |
| ⊢ (A ∈ Cℋ → ( ∨ℋ ‘{x ∈ Cℋ ∣x ⊆ A}) = A) | ||
| Theorem | chsupsn 9307 | Value of supremum of subset of Cℋ on a singleton. |
| ⊢ (A ∈ Cℋ → ( ∨ℋ ‘{A}) = A) | ||
| Theorem | hsupunss 9308 | The union of a set of Hilbert space subsets is smaller than its supremum. |
| ⊢ (A ⊆ ℘ ℋ → ∪A ⊆ ( ∨ℋ ‘A)) | ||
| Theorem | spanss2 9309 | A subset of Hilbert space is included in its span. |
| ⊢ (A ⊆ ℋ → A ⊆ (span ‘A)) | ||
| Theorem | shsupunss 9310 | The union of a set of subspaces is smaller than its supremum. |
| ⊢ (A ⊆ Sℋ → ∪A ⊆ (span ‘∪A)) | ||
| Theorem | chsupunss 9311 | The union of a set of closed subspaces is smaller than its supremum. |
| ⊢ (A ⊆ Cℋ → ∪A ⊆ ( ∨ℋ ‘A)) | ||
| Theorem | spanid 9312 | A subspace of Hilbert space is its own span. |
| ⊢ (A ∈ Sℋ → (span ‘A) = A) | ||
| Theorem | spanss 9313 | Ordering relationship for the spans of subsets of Hilbert space. |
| ⊢ ((B ⊆ ℋ ⋀ A ⊆ B) → (span ‘A) ⊆ (span ‘B)) | ||
| Theorem | spanssoc 9314 | The span of a subset of Hilbert space is less than or equal to its closure (double orthogonal complement). |
| ⊢ (A ⊆ ℋ → (span ‘A) ⊆ (⊥ ‘(⊥ ‘A))) | ||
| Theorem | sshjvalt 9315 | Value of join for subsets of Hilbert space. |
| ⊢ ((A ⊆ ℋ ⋀ B ⊆ ℋ ) → (A ∨ℋ B) = (⊥ ‘(⊥ ‘(A ∪ B)))) | ||
| Theorem | shjvalt 9316 | Value of join in Sℋ. |
| ⊢ ((A ∈ Sℋ ⋀ B ∈ Sℋ ) → (A ∨ℋ B) = (⊥ ‘(⊥ ‘(A ∪ B)))) | ||
| Theorem | chjvalt 9317 | Value of join in Cℋ. |
| ⊢ ((A ∈ Cℋ ⋀ B ∈ Cℋ ) → (A ∨ℋ B) = (⊥ ‘(⊥ ‘(A ∪ B)))) | ||
| Theorem | chjval 9318 | Value of join in Cℋ. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A ∨ℋ B) = (⊥ ‘(⊥ ‘(A ∪ B))) | ||
| Theorem | dfchj2 9319 | Alternate definition of join in the set of closed subspaces of Hilbert space Cℋ. |
| ⊢ ∨ℋ = {〈〈x, y〉, z〉∣((x ⊆ ℋ ⋀ y ⊆ ℋ ) ⋀ z = ∩{w ∈ Cℋ ∣(x ∪ y) ⊆ w})} | ||
| Theorem | dfchj3 9320 | Alternate definition of join in the set of closed subspaces of Hilbert space Cℋ: the join is the supremum of its two arguments. Based on the definition of join in [Beran] p. 3. For later convenience we prove a general version that works for any subset of Hilbert space, not just the elements of the lattice Cℋ. |
| ⊢ ∨ℋ = {〈〈x, y〉, z〉∣((x ⊆ ℋ ⋀ y ⊆ ℋ ) ⋀ z = ( ∨ℋ ‘{x, y}))} | ||
| Theorem | sshjval3t 9321 | Value of join for subsets of Hilbert space in terms of supremum: the join is the supremum of its two arguments. Based on the definition of join in [Beran] p. 3. |
| ⊢ ((A ⊆ ℋ ⋀ B ⊆ ℋ ) → (A ∨ℋ B) = ( ∨ℋ ‘{A, B})) | ||
| Theorem | sshjclt 9322 | Closure of join for subsets of Hilbert space. |
| ⊢ ((A ⊆ ℋ ⋀ B ⊆ ℋ ) → (A ∨ℋ B) ∈ Cℋ ) | ||
| Theorem | shjclt 9323 | Closure of join in Sℋ. |
| ⊢ ((A ∈ Sℋ ⋀ B ∈ Sℋ ) → (A ∨ℋ B) ∈ Cℋ ) | ||
| Theorem | chjclt 9324 | Closure of join in Cℋ. |
| ⊢ ((A ∈ Cℋ ⋀ B ∈ Cℋ ) → (A ∨ℋ B) ∈ Cℋ ) | ||
| Theorem | shjcomt 9325 | Commutative law for Hilbert lattice join of subspaces. |
| ⊢ ((A ∈ Sℋ ⋀ B ∈ Sℋ ) → (A ∨ℋ B) = (B ∨ℋ A)) | ||
| Theorem | shincl 9326 | Closure of intersection of two subspaces. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A ∩ B) ∈ Sℋ | ||
| Theorem | shscom 9327 | Commutative law for subspace sum. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A +ℋ B) = (B +ℋ A) | ||
| Theorem | shsva 9328 | Vector sum belongs to subspace sum. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ ((C ∈ A ⋀ D ∈ B) → (C +h D) ∈ (A +ℋ B)) | ||
| Theorem | shsel1 9329 | A subspace sum contains a member of one of its subspaces. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (C ∈ A → C ∈ (A +ℋ B)) | ||
| Theorem | shsel2 9330 | A subspace sum contains a member of one of its subspaces. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (C ∈ B → C ∈ (A +ℋ B)) | ||
| Theorem | shsvs 9331 | Vector subtraction belongs to subspace sum. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ ((C ∈ A ⋀ D ∈ B) → (C −h D) ∈ (A +ℋ B)) | ||
| Theorem | shunss 9332 | Union is smaller than subspace sum. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A ∪ B) ⊆ (A +ℋ B) | ||
| Theorem | shslej 9333 | Subspace sum is smaller than Hilbert lattice join. Remark in [Kalmbach] p. 65. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A +ℋ B) ⊆ (A ∨ℋ B) | ||
| Theorem | shunssj 9334 | Union is smaller than Hilbert lattice join. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A ∪ B) ⊆ (A ∨ℋ B) | ||
| Theorem | shjcom 9335 | Commutative law for join in Sℋ. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A ∨ℋ B) = (B ∨ℋ A) | ||
| Theorem | shsub1 9336 | Subspace sum is an upper bound of its arguments. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ A ⊆ (A +ℋ B) | ||
| Theorem | shsub2 9337 | Subspace sum is an upper bound of its arguments. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ A ⊆ (B +ℋ A) | ||
| Theorem | shub1 9338 | Hilbert lattice join is an upper bound of two subspaces. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ A ⊆ (A ∨ℋ B) | ||
| Theorem | shjcl 9339 | Closure of Cℋ join. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A ∨ℋ B) ∈ Cℋ | ||
| Theorem | shjshcl 9340 | Sℋ closure of join. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A ∨ℋ B) ∈ Sℋ | ||
| Theorem | shlub 9341 | Hilbert lattice join is the least upper bound (among Hilbert lattice elements) of two subspaces. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ & ⊢ C ∈ Cℋ ⇒ ⊢ ((A ⊆ C ⋀ B ⊆ C) ↔ (A ∨ℋ B) ⊆ C) | ||
| Theorem | shless 9342 | Subset implies subset of subspace sum. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ & ⊢ C ∈ Sℋ ⇒ ⊢ (A ⊆ B → (A +ℋ C) ⊆ (B +ℋ C)) | ||
| Theorem | shlej1 9343 | Add disjunct to both sides of Hilbert subspace ordering. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ & ⊢ C ∈ Sℋ ⇒ ⊢ (A ⊆ B → (A ∨ℋ C) ⊆ (B ∨ℋ C)) | ||
| Theorem | shlej2 9344 | Add disjunct to both sides of Hilbert subspace ordering. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ & ⊢ C ∈ Sℋ ⇒ ⊢ (A ⊆ B → (C ∨ℋ A) ⊆ (C ∨ℋ B)) | ||
| Theorem | shslejt 9345 | Subspace sum is smaller than subspace join. Remark in [Kalmbach] p. 65. |
| ⊢ ((A ∈ Sℋ ⋀ B ∈ Sℋ ) → (A +ℋ B) ⊆ (A ∨ℋ B)) | ||
| Theorem | shinclt 9346 | Closure of intersection of two subspaces. |
| ⊢ ((A ∈ Sℋ ⋀ B ∈ Sℋ ) → (A ∩ B) ∈ Sℋ ) | ||
| Theorem | shub1t 9347 | Hilbert lattice join is an upper bound of two subspaces. |
| ⊢ ((A ∈ Sℋ ⋀ B ∈ Sℋ ) → A ⊆ (A ∨ℋ B)) | ||
| Theorem | shub2t 9348 | A subspace is a subset of its Hilbert lattice join with another. |
| ⊢ ((A ∈ Sℋ ⋀ B ∈ Sℋ ) → A ⊆ (B ∨ℋ A)) | ||
| Theorem | shlubt 9349 | Hilbert lattice join is the least upper bound (among Hilbert lattice elements) of two subspaces. |
| ⊢ ((A ∈ Sℋ ⋀ B ∈ Sℋ ⋀ C ∈ Cℋ ) → ((A ⊆ C ⋀ B ⊆ C) ↔ (A ∨ℋ B) ⊆ C)) | ||
| Theorem | shlej1t 9350 | Add disjunct to both sides of Hilbert subspace ordering. |
| ⊢ (((A ∈ Sℋ ⋀ B ∈ Sℋ ⋀ C ∈ Sℋ ) ⋀ A ⊆ B) → (A ∨ℋ C) ⊆ (B ∨ℋ C)) | ||
| Theorem | shlej2t 9351 | Add disjunct to both sides of Hilbert subspace ordering. |
| ⊢ (((A ∈ Sℋ ⋀ B ∈ Sℋ ⋀ C ∈ Sℋ ) ⋀ A ⊆ B) → (C ∨ℋ A) ⊆ (C ∨ℋ B)) | ||
| Theorem | shsidm 9352 | Idempotent law for Hilbert subspace sum. |
| ⊢ A ∈ Sℋ ⇒ ⊢ (A +ℋ A) = A | ||
| Theorem | shslub 9353 | Least upper bound law for Hilbert subspace sum. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ & ⊢ C ∈ Sℋ ⇒ ⊢ ((A ⊆ C ⋀ B ⊆ C) ↔ (A +ℋ B) ⊆ C) | ||
| Theorem | shlesb1 9354 | Hilbert lattice ordering in terms of subspace sum. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A ⊆ B ↔ (A +ℋ B) = B) | ||
| Theorem | shsumval2 9355 | An alternate way to express subspace sum. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A +ℋ B) = ∩{x ∈ Sℋ ∣(A ∪ B) ⊆ x} | ||
| Theorem | shsumval3 9356 | An alternate way to express subspace sum. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ (A +ℋ B) = (span ‘(A ∪ B)) | ||
| Theorem | shmods 9357 | The modular law holds for subspace sum. Similar to part of Theorem 16.9 of [MaedaMaeda] p. 70. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ & ⊢ C ∈ Sℋ ⇒ ⊢ (A ⊆ C → ((A +ℋ B) ∩ C) ⊆ (A +ℋ (B ∩ C))) | ||
| Theorem | shmod 9358 | The modular law is implied by the closure of subspace sum. Part of proof of Theorem 16.9 of [MaedaMaeda] p. 70. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ & ⊢ C ∈ Sℋ ⇒ ⊢ (((A +ℋ B) = (A ∨ℋ B) ⋀ A ⊆ C) → ((A ∨ℋ B) ∩ C) ⊆ (A ∨ℋ (B ∩ C))) | ||
| Hilbert lattice operations | ||
| Theorem | sh0let 9359 | The zero subspace is the smallest subspace. |
| ⊢ (A ∈ Sℋ → 0ℋ ⊆ A) | ||
| Theorem | ch0let 9360 | The zero subspace is the smallest member of Cℋ. |
| ⊢ (A ∈ Cℋ → 0ℋ ⊆ A) | ||
| Theorem | shle0t 9361 | No subspace is smaller than the zero subspace. |
| ⊢ (A ∈ Sℋ → (A ⊆ 0ℋ ↔ A = 0ℋ)) | ||
| Theorem | chle0t 9362 | No Hilbert lattice element is smaller than zero. |
| ⊢ (A ∈ Cℋ → (A ⊆ 0ℋ ↔ A = 0ℋ)) | ||
| Theorem | chnlen0 9363 | A Hilbert lattice element that is not a subset of another is nonzero. |
| ⊢ (B ∈ Cℋ → (¬ A ⊆ B → ¬ A = 0ℋ)) | ||
| Theorem | ch0psst 9364 | The zero subspace is a proper subset of non-zero Hilbert lattice elements. |
| ⊢ (A ∈ Cℋ → (0ℋ ⊂ A ↔ A ≠ 0ℋ)) | ||
| Theorem | orthin 9365 | The intersection of orthogonal subspaces is the zero subspace. |
| ⊢ ((A ∈ Sℋ ⋀ B ∈ Sℋ ) → (A ⊆ (⊥ ‘B) → (A ∩ B) = 0ℋ)) | ||
| Theorem | shne0 9366 | A non-zero subspace has a non-zero vector. |
| ⊢ A ∈ Sℋ ⇒ ⊢ (A ≠ 0ℋ ↔ ∃x ∈ A x ≠ 0h) | ||
| Theorem | shs0 9367 | Hilbert subspace sum with the zero subspace. |
| ⊢ A ∈ Sℋ ⇒ ⊢ (A +ℋ 0ℋ) = A | ||
| Theorem | shs00 9368 | Two subspaces are zero iff their join is zero. |
| ⊢ A ∈ Sℋ & ⊢ B ∈ Sℋ ⇒ ⊢ ((A = 0ℋ ⋀ B = 0ℋ) ↔ (A +ℋ B) = 0ℋ) | ||
| Theorem | ch0le 9369 | The closed subspace zero is the smallest member of Cℋ. |
| ⊢ A ∈ Cℋ ⇒ ⊢ 0ℋ ⊆ A | ||
| Theorem | chle0 9370 | No Hilbert closed subspace is smaller than zero. |
| ⊢ A ∈ Cℋ ⇒ ⊢ (A ⊆ 0ℋ ↔ A = 0ℋ) | ||
| Theorem | chne0 9371 | A non-zero closed subspace has a non-zero vector. |
| ⊢ A ∈ Cℋ ⇒ ⊢ (A ≠ 0ℋ ↔ ∃x ∈ A x ≠ 0h) | ||
| Theorem | chocin 9372 | Intersection of a closed subspace and its orthocomplement. Part of Proposition 1 of [Kalmbach] p. 65. |
| ⊢ A ∈ Cℋ ⇒ ⊢ (A ∩ (⊥ ‘A)) = 0ℋ | ||
| Theorem | chj0 9373 | Join with lattice zero in Cℋ. |
| ⊢ A ∈ Cℋ ⇒ ⊢ (A ∨ℋ 0ℋ) = A | ||
| Theorem | chm1 9374 | Meet with lattice one in Cℋ. |
| ⊢ A ∈ Cℋ ⇒ ⊢ (A ∩ ℋ ) = A | ||
| Theorem | chjcl 9375 | Closure of Cℋ join. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A ∨ℋ B) ∈ Cℋ | ||
| Theorem | chslej 9376 | Subspace sum is smaller than subspace join. Remark in [Kalmbach] p. 65. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A +ℋ B) ⊆ (A ∨ℋ B) | ||
| Theorem | chsel 9377 | Membership in subspace sum. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (C ∈ (A +ℋ B) ↔ ∃x ∈ A ∃y ∈ B C = (x +h y)) | ||
| Theorem | chincl 9378 | Closure of Hilbert lattice intersection. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A ∩ B) ∈ Cℋ | ||
| Theorem | chsscon3 9379 | Hilbert lattice contraposition law. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A ⊆ B ↔ (⊥ ‘B) ⊆ (⊥ ‘A)) | ||
| Theorem | chsscon1 9380 | Hilbert lattice contraposition law. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ ((⊥ ‘A) ⊆ B ↔ (⊥ ‘B) ⊆ A) | ||
| Theorem | chsscon2 9381 | Hilbert lattice contraposition law. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A ⊆ (⊥ ‘B) ↔ B ⊆ (⊥ ‘A)) | ||
| Theorem | chcon2 9382 | Hilbert lattice contraposition law. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A = (⊥ ‘B) ↔ B = (⊥ ‘A)) | ||
| Theorem | chcon1 9383 | Hilbert lattice contraposition law. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ ((⊥ ‘A) = B ↔ (⊥ ‘B) = A) | ||
| Theorem | chcon3 9384 | Hilbert lattice contraposition law. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A = B ↔ (⊥ ‘B) = (⊥ ‘A)) | ||
| Theorem | chunssj 9385 | Union is smaller than Cℋ join. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A ∪ B) ⊆ (A ∨ℋ B) | ||
| Theorem | chjcom 9386 | Commutative law for join in Cℋ. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A ∨ℋ B) = (B ∨ℋ A) | ||
| Theorem | chub1 9387 | Cℋ join is an upper bound of two elements. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ A ⊆ (A ∨ℋ B) | ||
| Theorem | chub2 9388 | Cℋ join is an upper bound of two elements. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ A ⊆ (B ∨ℋ A) | ||
| Theorem | chlub 9389 | Hilbert lattice join is the least upper bound of two elements. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ & ⊢ C ∈ Cℋ ⇒ ⊢ ((A ⊆ C ⋀ B ⊆ C) ↔ (A ∨ℋ B) ⊆ C) | ||
| Theorem | chlubi 9390 | Hilbert lattice join is the least upper bound of two elements (one direction of chlub 9389). |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ & ⊢ C ∈ Cℋ ⇒ ⊢ ((A ⊆ C ⋀ B ⊆ C) → (A ∨ℋ B) ⊆ C) | ||
| Theorem | chlej1 9391 | Add join to both sides of a Hilbert lattice ordering. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ & ⊢ C ∈ Cℋ ⇒ ⊢ (A ⊆ B → (A ∨ℋ C) ⊆ (B ∨ℋ C)) | ||
| Theorem | chlej2 9392 | Add join to both sides of a Hilbert lattice ordering. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ & ⊢ C ∈ Cℋ ⇒ ⊢ (A ⊆ B → (C ∨ℋ A) ⊆ (C ∨ℋ B)) | ||
| Theorem | chlej12 9393 | Add join to both sides of a Hilbert lattice ordering. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ & ⊢ C ∈ Cℋ & ⊢ D ∈ Cℋ ⇒ ⊢ ((A ⊆ B ⋀ C ⊆ D) → (A ∨ℋ C) ⊆ (B ∨ℋ D)) | ||
| Theorem | chlejb1 9394 | Hilbert lattice ordering in terms of join. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (A ⊆ B ↔ (A ∨ℋ B) = B) | ||
| Theorem | chdmm1 9395 | DeMorgan's law for meet in a Hilbert lattice. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (⊥ ‘(A ∩ B)) = ((⊥ ‘A) ∨ℋ (⊥ ‘B)) | ||
| Theorem | chdmm2 9396 | DeMorgan's law for meet in a Hilbert lattice. |
| ⊢ A ∈ Cℋ & ⊢ B ∈ Cℋ ⇒ ⊢ (⊥ ‘((⊥ ‘A) ∩ B)) = (A ∨ℋ (⊥ ‘B)) | ||
| Theorem | chdmm3 9397 | DeMorgan's law for meet in a Hilbert lattice. |
| ⊢ A ∈ Cℋ | ||