Theorem List for Intuitionistic Logic Explorer - 5901-6000 *Has distinct variable
group(s)
Type | Label | Description |
Statement |
|
Theorem | caovcand 5901* |
Convert an operation cancellation law to class notation. (Contributed
by Mario Carneiro, 30-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑇 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦) = (𝑥𝐹𝑧) ↔ 𝑦 = 𝑧))
& ⊢ (𝜑 → 𝐴 ∈ 𝑇)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆) ⇒ ⊢ (𝜑 → ((𝐴𝐹𝐵) = (𝐴𝐹𝐶) ↔ 𝐵 = 𝐶)) |
|
Theorem | caovcanrd 5902* |
Commute the arguments of an operation cancellation law. (Contributed
by Mario Carneiro, 30-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑇 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦) = (𝑥𝐹𝑧) ↔ 𝑦 = 𝑧))
& ⊢ (𝜑 → 𝐴 ∈ 𝑇)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥)) ⇒ ⊢ (𝜑 → ((𝐵𝐹𝐴) = (𝐶𝐹𝐴) ↔ 𝐵 = 𝐶)) |
|
Theorem | caovcan 5903* |
Convert an operation cancellation law to class notation. (Contributed
by NM, 20-Aug-1995.)
|
⊢ 𝐶 ∈ V & ⊢ ((𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆) → ((𝑥𝐹𝑦) = (𝑥𝐹𝑧) → 𝑦 = 𝑧)) ⇒ ⊢ ((𝐴 ∈ 𝑆 ∧ 𝐵 ∈ 𝑆) → ((𝐴𝐹𝐵) = (𝐴𝐹𝐶) → 𝐵 = 𝐶)) |
|
Theorem | caovordig 5904* |
Convert an operation ordering law to class notation. (Contributed by
Mario Carneiro, 31-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑥𝑅𝑦 → (𝑧𝐹𝑥)𝑅(𝑧𝐹𝑦))) ⇒ ⊢ ((𝜑 ∧ (𝐴 ∈ 𝑆 ∧ 𝐵 ∈ 𝑆 ∧ 𝐶 ∈ 𝑆)) → (𝐴𝑅𝐵 → (𝐶𝐹𝐴)𝑅(𝐶𝐹𝐵))) |
|
Theorem | caovordid 5905* |
Convert an operation ordering law to class notation. (Contributed by
Mario Carneiro, 31-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑥𝑅𝑦 → (𝑧𝐹𝑥)𝑅(𝑧𝐹𝑦))) & ⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆) ⇒ ⊢ (𝜑 → (𝐴𝑅𝐵 → (𝐶𝐹𝐴)𝑅(𝐶𝐹𝐵))) |
|
Theorem | caovordg 5906* |
Convert an operation ordering law to class notation. (Contributed by
NM, 19-Feb-1996.) (Revised by Mario Carneiro, 30-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑥𝑅𝑦 ↔ (𝑧𝐹𝑥)𝑅(𝑧𝐹𝑦))) ⇒ ⊢ ((𝜑 ∧ (𝐴 ∈ 𝑆 ∧ 𝐵 ∈ 𝑆 ∧ 𝐶 ∈ 𝑆)) → (𝐴𝑅𝐵 ↔ (𝐶𝐹𝐴)𝑅(𝐶𝐹𝐵))) |
|
Theorem | caovordd 5907* |
Convert an operation ordering law to class notation. (Contributed by
Mario Carneiro, 30-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑥𝑅𝑦 ↔ (𝑧𝐹𝑥)𝑅(𝑧𝐹𝑦))) & ⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆) ⇒ ⊢ (𝜑 → (𝐴𝑅𝐵 ↔ (𝐶𝐹𝐴)𝑅(𝐶𝐹𝐵))) |
|
Theorem | caovord2d 5908* |
Operation ordering law with commuted arguments. (Contributed by Mario
Carneiro, 30-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑥𝑅𝑦 ↔ (𝑧𝐹𝑥)𝑅(𝑧𝐹𝑦))) & ⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥)) ⇒ ⊢ (𝜑 → (𝐴𝑅𝐵 ↔ (𝐴𝐹𝐶)𝑅(𝐵𝐹𝐶))) |
|
Theorem | caovord3d 5909* |
Ordering law. (Contributed by Mario Carneiro, 30-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑥𝑅𝑦 ↔ (𝑧𝐹𝑥)𝑅(𝑧𝐹𝑦))) & ⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥))
& ⊢ (𝜑 → 𝐷 ∈ 𝑆) ⇒ ⊢ (𝜑 → ((𝐴𝐹𝐵) = (𝐶𝐹𝐷) → (𝐴𝑅𝐶 ↔ 𝐷𝑅𝐵))) |
|
Theorem | caovord 5910* |
Convert an operation ordering law to class notation. (Contributed by
NM, 19-Feb-1996.)
|
⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈ V & ⊢ (𝑧 ∈ 𝑆 → (𝑥𝑅𝑦 ↔ (𝑧𝐹𝑥)𝑅(𝑧𝐹𝑦))) ⇒ ⊢ (𝐶 ∈ 𝑆 → (𝐴𝑅𝐵 ↔ (𝐶𝐹𝐴)𝑅(𝐶𝐹𝐵))) |
|
Theorem | caovord2 5911* |
Operation ordering law with commuted arguments. (Contributed by NM,
27-Feb-1996.)
|
⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈ V & ⊢ (𝑧 ∈ 𝑆 → (𝑥𝑅𝑦 ↔ (𝑧𝐹𝑥)𝑅(𝑧𝐹𝑦))) & ⊢ 𝐶 ∈ V & ⊢ (𝑥𝐹𝑦) = (𝑦𝐹𝑥) ⇒ ⊢ (𝐶 ∈ 𝑆 → (𝐴𝑅𝐵 ↔ (𝐴𝐹𝐶)𝑅(𝐵𝐹𝐶))) |
|
Theorem | caovord3 5912* |
Ordering law. (Contributed by NM, 29-Feb-1996.)
|
⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈ V & ⊢ (𝑧 ∈ 𝑆 → (𝑥𝑅𝑦 ↔ (𝑧𝐹𝑥)𝑅(𝑧𝐹𝑦))) & ⊢ 𝐶 ∈ V & ⊢ (𝑥𝐹𝑦) = (𝑦𝐹𝑥)
& ⊢ 𝐷 ∈ V ⇒ ⊢ (((𝐵 ∈ 𝑆 ∧ 𝐶 ∈ 𝑆) ∧ (𝐴𝐹𝐵) = (𝐶𝐹𝐷)) → (𝐴𝑅𝐶 ↔ 𝐷𝑅𝐵)) |
|
Theorem | caovdig 5913* |
Convert an operation distributive law to class notation. (Contributed
by NM, 25-Aug-1995.) (Revised by Mario Carneiro, 26-Jul-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝐾 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑥𝐺(𝑦𝐹𝑧)) = ((𝑥𝐺𝑦)𝐻(𝑥𝐺𝑧))) ⇒ ⊢ ((𝜑 ∧ (𝐴 ∈ 𝐾 ∧ 𝐵 ∈ 𝑆 ∧ 𝐶 ∈ 𝑆)) → (𝐴𝐺(𝐵𝐹𝐶)) = ((𝐴𝐺𝐵)𝐻(𝐴𝐺𝐶))) |
|
Theorem | caovdid 5914* |
Convert an operation distributive law to class notation. (Contributed
by Mario Carneiro, 30-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝐾 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑥𝐺(𝑦𝐹𝑧)) = ((𝑥𝐺𝑦)𝐻(𝑥𝐺𝑧))) & ⊢ (𝜑 → 𝐴 ∈ 𝐾)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆) ⇒ ⊢ (𝜑 → (𝐴𝐺(𝐵𝐹𝐶)) = ((𝐴𝐺𝐵)𝐻(𝐴𝐺𝐶))) |
|
Theorem | caovdir2d 5915* |
Convert an operation distributive law to class notation. (Contributed
by Mario Carneiro, 30-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → (𝑥𝐺(𝑦𝐹𝑧)) = ((𝑥𝐺𝑦)𝐹(𝑥𝐺𝑧))) & ⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐺𝑦) = (𝑦𝐺𝑥)) ⇒ ⊢ (𝜑 → ((𝐴𝐹𝐵)𝐺𝐶) = ((𝐴𝐺𝐶)𝐹(𝐵𝐺𝐶))) |
|
Theorem | caovdirg 5916* |
Convert an operation reverse distributive law to class notation.
(Contributed by Mario Carneiro, 19-Oct-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝐾)) → ((𝑥𝐹𝑦)𝐺𝑧) = ((𝑥𝐺𝑧)𝐻(𝑦𝐺𝑧))) ⇒ ⊢ ((𝜑 ∧ (𝐴 ∈ 𝑆 ∧ 𝐵 ∈ 𝑆 ∧ 𝐶 ∈ 𝐾)) → ((𝐴𝐹𝐵)𝐺𝐶) = ((𝐴𝐺𝐶)𝐻(𝐵𝐺𝐶))) |
|
Theorem | caovdird 5917* |
Convert an operation distributive law to class notation. (Contributed
by Mario Carneiro, 30-Dec-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝐾)) → ((𝑥𝐹𝑦)𝐺𝑧) = ((𝑥𝐺𝑧)𝐻(𝑦𝐺𝑧))) & ⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝐾) ⇒ ⊢ (𝜑 → ((𝐴𝐹𝐵)𝐺𝐶) = ((𝐴𝐺𝐶)𝐻(𝐵𝐺𝐶))) |
|
Theorem | caovdi 5918* |
Convert an operation distributive law to class notation. (Contributed
by NM, 25-Aug-1995.) (Revised by Mario Carneiro, 28-Jun-2013.)
|
⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈ V & ⊢ 𝐶 ∈ V & ⊢ (𝑥𝐺(𝑦𝐹𝑧)) = ((𝑥𝐺𝑦)𝐹(𝑥𝐺𝑧)) ⇒ ⊢ (𝐴𝐺(𝐵𝐹𝐶)) = ((𝐴𝐺𝐵)𝐹(𝐴𝐺𝐶)) |
|
Theorem | caov32d 5919* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.) (Revised by Mario Carneiro,
30-Dec-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥))
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧))) ⇒ ⊢ (𝜑 → ((𝐴𝐹𝐵)𝐹𝐶) = ((𝐴𝐹𝐶)𝐹𝐵)) |
|
Theorem | caov12d 5920* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.) (Revised by Mario Carneiro,
30-Dec-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥))
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧))) ⇒ ⊢ (𝜑 → (𝐴𝐹(𝐵𝐹𝐶)) = (𝐵𝐹(𝐴𝐹𝐶))) |
|
Theorem | caov31d 5921* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.) (Revised by Mario Carneiro,
30-Dec-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥))
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧))) ⇒ ⊢ (𝜑 → ((𝐴𝐹𝐵)𝐹𝐶) = ((𝐶𝐹𝐵)𝐹𝐴)) |
|
Theorem | caov13d 5922* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.) (Revised by Mario Carneiro,
30-Dec-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥))
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧))) ⇒ ⊢ (𝜑 → (𝐴𝐹(𝐵𝐹𝐶)) = (𝐶𝐹(𝐵𝐹𝐴))) |
|
Theorem | caov4d 5923* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.) (Revised by Mario Carneiro,
30-Dec-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥))
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧))) & ⊢ (𝜑 → 𝐷 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) ∈ 𝑆) ⇒ ⊢ (𝜑 → ((𝐴𝐹𝐵)𝐹(𝐶𝐹𝐷)) = ((𝐴𝐹𝐶)𝐹(𝐵𝐹𝐷))) |
|
Theorem | caov411d 5924* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.) (Revised by Mario Carneiro,
30-Dec-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥))
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧))) & ⊢ (𝜑 → 𝐷 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) ∈ 𝑆) ⇒ ⊢ (𝜑 → ((𝐴𝐹𝐵)𝐹(𝐶𝐹𝐷)) = ((𝐶𝐹𝐵)𝐹(𝐴𝐹𝐷))) |
|
Theorem | caov42d 5925* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.) (Revised by Mario Carneiro,
30-Dec-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥))
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧))) & ⊢ (𝜑 → 𝐷 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) ∈ 𝑆) ⇒ ⊢ (𝜑 → ((𝐴𝐹𝐵)𝐹(𝐶𝐹𝐷)) = ((𝐴𝐹𝐶)𝐹(𝐷𝐹𝐵))) |
|
Theorem | caov32 5926* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.)
|
⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈ V & ⊢ 𝐶 ∈ V & ⊢ (𝑥𝐹𝑦) = (𝑦𝐹𝑥)
& ⊢ ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧)) ⇒ ⊢ ((𝐴𝐹𝐵)𝐹𝐶) = ((𝐴𝐹𝐶)𝐹𝐵) |
|
Theorem | caov12 5927* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.)
|
⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈ V & ⊢ 𝐶 ∈ V & ⊢ (𝑥𝐹𝑦) = (𝑦𝐹𝑥)
& ⊢ ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧)) ⇒ ⊢ (𝐴𝐹(𝐵𝐹𝐶)) = (𝐵𝐹(𝐴𝐹𝐶)) |
|
Theorem | caov31 5928* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.)
|
⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈ V & ⊢ 𝐶 ∈ V & ⊢ (𝑥𝐹𝑦) = (𝑦𝐹𝑥)
& ⊢ ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧)) ⇒ ⊢ ((𝐴𝐹𝐵)𝐹𝐶) = ((𝐶𝐹𝐵)𝐹𝐴) |
|
Theorem | caov13 5929* |
Rearrange arguments in a commutative, associative operation.
(Contributed by NM, 26-Aug-1995.)
|
⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈ V & ⊢ 𝐶 ∈ V & ⊢ (𝑥𝐹𝑦) = (𝑦𝐹𝑥)
& ⊢ ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧)) ⇒ ⊢ (𝐴𝐹(𝐵𝐹𝐶)) = (𝐶𝐹(𝐵𝐹𝐴)) |
|
Theorem | caovdilemd 5930* |
Lemma used by real number construction. (Contributed by Jim Kingdon,
16-Sep-2019.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐺𝑦) = (𝑦𝐺𝑥))
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦)𝐺𝑧) = ((𝑥𝐺𝑧)𝐹(𝑦𝐺𝑧))) & ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐺𝑦)𝐺𝑧) = (𝑥𝐺(𝑦𝐺𝑧))) & ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐺𝑦) ∈ 𝑆)
& ⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ (𝜑 → 𝐷 ∈ 𝑆)
& ⊢ (𝜑 → 𝐻 ∈ 𝑆) ⇒ ⊢ (𝜑 → (((𝐴𝐺𝐶)𝐹(𝐵𝐺𝐷))𝐺𝐻) = ((𝐴𝐺(𝐶𝐺𝐻))𝐹(𝐵𝐺(𝐷𝐺𝐻)))) |
|
Theorem | caovlem2d 5931* |
Rearrangement of expression involving multiplication (𝐺) and
addition (𝐹). (Contributed by Jim Kingdon,
3-Jan-2020.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐺𝑦) = (𝑦𝐺𝑥))
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦)𝐺𝑧) = ((𝑥𝐺𝑧)𝐹(𝑦𝐺𝑧))) & ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐺𝑦)𝐺𝑧) = (𝑥𝐺(𝑦𝐺𝑧))) & ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐺𝑦) ∈ 𝑆)
& ⊢ (𝜑 → 𝐴 ∈ 𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑆)
& ⊢ (𝜑 → 𝐶 ∈ 𝑆)
& ⊢ (𝜑 → 𝐷 ∈ 𝑆)
& ⊢ (𝜑 → 𝐻 ∈ 𝑆)
& ⊢ (𝜑 → 𝑅 ∈ 𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥))
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧))) & ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝐹𝑦) ∈ 𝑆) ⇒ ⊢ (𝜑 → ((((𝐴𝐺𝐶)𝐹(𝐵𝐺𝐷))𝐺𝐻)𝐹(((𝐴𝐺𝐷)𝐹(𝐵𝐺𝐶))𝐺𝑅)) = ((𝐴𝐺((𝐶𝐺𝐻)𝐹(𝐷𝐺𝑅)))𝐹(𝐵𝐺((𝐶𝐺𝑅)𝐹(𝐷𝐺𝐻))))) |
|
Theorem | caovimo 5932* |
Uniqueness of inverse element in commutative, associative operation with
identity. The identity element is 𝐵. (Contributed by Jim Kingdon,
18-Sep-2019.)
|
⊢ 𝐵 ∈ 𝑆
& ⊢ ((𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆) → (𝑥𝐹𝑦) = (𝑦𝐹𝑥))
& ⊢ ((𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆) → ((𝑥𝐹𝑦)𝐹𝑧) = (𝑥𝐹(𝑦𝐹𝑧))) & ⊢ (𝑥 ∈ 𝑆 → (𝑥𝐹𝐵) = 𝑥) ⇒ ⊢ (𝐴 ∈ 𝑆 → ∃*𝑤(𝑤 ∈ 𝑆 ∧ (𝐴𝐹𝑤) = 𝐵)) |
|
Theorem | grprinvlem 5933* |
Lemma for grprinvd 5934. (Contributed by NM, 9-Aug-2013.)
|
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → (𝑥 + 𝑦) ∈ 𝐵)
& ⊢ (𝜑 → 𝑂 ∈ 𝐵)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑂 + 𝑥) = 𝑥)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → ((𝑥 + 𝑦) + 𝑧) = (𝑥 + (𝑦 + 𝑧))) & ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ∃𝑦 ∈ 𝐵 (𝑦 + 𝑥) = 𝑂)
& ⊢ ((𝜑 ∧ 𝜓) → 𝑋 ∈ 𝐵)
& ⊢ ((𝜑 ∧ 𝜓) → (𝑋 + 𝑋) = 𝑋) ⇒ ⊢ ((𝜑 ∧ 𝜓) → 𝑋 = 𝑂) |
|
Theorem | grprinvd 5934* |
Deduce right inverse from left inverse and left identity in an
associative structure (such as a group). (Contributed by NM,
10-Aug-2013.) (Proof shortened by Mario Carneiro, 6-Jan-2015.)
|
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → (𝑥 + 𝑦) ∈ 𝐵)
& ⊢ (𝜑 → 𝑂 ∈ 𝐵)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑂 + 𝑥) = 𝑥)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → ((𝑥 + 𝑦) + 𝑧) = (𝑥 + (𝑦 + 𝑧))) & ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ∃𝑦 ∈ 𝐵 (𝑦 + 𝑥) = 𝑂)
& ⊢ ((𝜑 ∧ 𝜓) → 𝑋 ∈ 𝐵)
& ⊢ ((𝜑 ∧ 𝜓) → 𝑁 ∈ 𝐵)
& ⊢ ((𝜑 ∧ 𝜓) → (𝑁 + 𝑋) = 𝑂) ⇒ ⊢ ((𝜑 ∧ 𝜓) → (𝑋 + 𝑁) = 𝑂) |
|
Theorem | grpridd 5935* |
Deduce right identity from left inverse and left identity in an
associative structure (such as a group). (Contributed by NM,
10-Aug-2013.) (Proof shortened by Mario Carneiro, 6-Jan-2015.)
|
⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → (𝑥 + 𝑦) ∈ 𝐵)
& ⊢ (𝜑 → 𝑂 ∈ 𝐵)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑂 + 𝑥) = 𝑥)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → ((𝑥 + 𝑦) + 𝑧) = (𝑥 + (𝑦 + 𝑧))) & ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → ∃𝑦 ∈ 𝐵 (𝑦 + 𝑥) = 𝑂) ⇒ ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝑥 + 𝑂) = 𝑥) |
|
2.6.11 Maps-to notation
|
|
Theorem | elmpocl 5936* |
If a two-parameter class is inhabited, constrain the implicit pair.
(Contributed by Stefan O'Rear, 7-Mar-2015.)
|
⊢ 𝐹 = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) ⇒ ⊢ (𝑋 ∈ (𝑆𝐹𝑇) → (𝑆 ∈ 𝐴 ∧ 𝑇 ∈ 𝐵)) |
|
Theorem | elmpocl1 5937* |
If a two-parameter class is inhabited, the first argument is in its
nominal domain. (Contributed by FL, 15-Oct-2012.) (Revised by Stefan
O'Rear, 7-Mar-2015.)
|
⊢ 𝐹 = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) ⇒ ⊢ (𝑋 ∈ (𝑆𝐹𝑇) → 𝑆 ∈ 𝐴) |
|
Theorem | elmpocl2 5938* |
If a two-parameter class is inhabited, the second argument is in its
nominal domain. (Contributed by FL, 15-Oct-2012.) (Revised by Stefan
O'Rear, 7-Mar-2015.)
|
⊢ 𝐹 = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) ⇒ ⊢ (𝑋 ∈ (𝑆𝐹𝑇) → 𝑇 ∈ 𝐵) |
|
Theorem | elovmpo 5939* |
Utility lemma for two-parameter classes. (Contributed by Stefan O'Rear,
21-Jan-2015.)
|
⊢ 𝐷 = (𝑎 ∈ 𝐴, 𝑏 ∈ 𝐵 ↦ 𝐶)
& ⊢ 𝐶 ∈ V & ⊢ ((𝑎 = 𝑋 ∧ 𝑏 = 𝑌) → 𝐶 = 𝐸) ⇒ ⊢ (𝐹 ∈ (𝑋𝐷𝑌) ↔ (𝑋 ∈ 𝐴 ∧ 𝑌 ∈ 𝐵 ∧ 𝐹 ∈ 𝐸)) |
|
Theorem | f1ocnvd 5940* |
Describe an implicit one-to-one onto function. (Contributed by Mario
Carneiro, 30-Apr-2015.)
|
⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐶)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝑊)
& ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝐷 ∈ 𝑋)
& ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ∧ 𝑦 = 𝐶) ↔ (𝑦 ∈ 𝐵 ∧ 𝑥 = 𝐷))) ⇒ ⊢ (𝜑 → (𝐹:𝐴–1-1-onto→𝐵 ∧ ◡𝐹 = (𝑦 ∈ 𝐵 ↦ 𝐷))) |
|
Theorem | f1od 5941* |
Describe an implicit one-to-one onto function. (Contributed by Mario
Carneiro, 12-May-2014.)
|
⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐶)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝑊)
& ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝐷 ∈ 𝑋)
& ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ∧ 𝑦 = 𝐶) ↔ (𝑦 ∈ 𝐵 ∧ 𝑥 = 𝐷))) ⇒ ⊢ (𝜑 → 𝐹:𝐴–1-1-onto→𝐵) |
|
Theorem | f1ocnv2d 5942* |
Describe an implicit one-to-one onto function. (Contributed by Mario
Carneiro, 30-Apr-2015.)
|
⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐶)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝐵)
& ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝐷 ∈ 𝐴)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵)) → (𝑥 = 𝐷 ↔ 𝑦 = 𝐶)) ⇒ ⊢ (𝜑 → (𝐹:𝐴–1-1-onto→𝐵 ∧ ◡𝐹 = (𝑦 ∈ 𝐵 ↦ 𝐷))) |
|
Theorem | f1o2d 5943* |
Describe an implicit one-to-one onto function. (Contributed by Mario
Carneiro, 12-May-2014.)
|
⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐶)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝐵)
& ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐵) → 𝐷 ∈ 𝐴)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵)) → (𝑥 = 𝐷 ↔ 𝑦 = 𝐶)) ⇒ ⊢ (𝜑 → 𝐹:𝐴–1-1-onto→𝐵) |
|
Theorem | f1opw2 5944* |
A one-to-one mapping induces a one-to-one mapping on power sets. This
version of f1opw 5945 avoids the Axiom of Replacement.
(Contributed by
Mario Carneiro, 26-Jun-2015.)
|
⊢ (𝜑 → 𝐹:𝐴–1-1-onto→𝐵)
& ⊢ (𝜑 → (◡𝐹 “ 𝑎) ∈ V) & ⊢ (𝜑 → (𝐹 “ 𝑏) ∈ V) ⇒ ⊢ (𝜑 → (𝑏 ∈ 𝒫 𝐴 ↦ (𝐹 “ 𝑏)):𝒫 𝐴–1-1-onto→𝒫 𝐵) |
|
Theorem | f1opw 5945* |
A one-to-one mapping induces a one-to-one mapping on power sets.
(Contributed by Stefan O'Rear, 18-Nov-2014.) (Revised by Mario
Carneiro, 26-Jun-2015.)
|
⊢ (𝐹:𝐴–1-1-onto→𝐵 → (𝑏 ∈ 𝒫 𝐴 ↦ (𝐹 “ 𝑏)):𝒫 𝐴–1-1-onto→𝒫 𝐵) |
|
Theorem | suppssfv 5946* |
Formula building theorem for support restriction, on a function which
preserves zero. (Contributed by Stefan O'Rear, 9-Mar-2015.)
|
⊢ (𝜑 → (◡(𝑥 ∈ 𝐷 ↦ 𝐴) “ (V ∖ {𝑌})) ⊆ 𝐿)
& ⊢ (𝜑 → (𝐹‘𝑌) = 𝑍)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐷) → 𝐴 ∈ 𝑉) ⇒ ⊢ (𝜑 → (◡(𝑥 ∈ 𝐷 ↦ (𝐹‘𝐴)) “ (V ∖ {𝑍})) ⊆ 𝐿) |
|
Theorem | suppssov1 5947* |
Formula building theorem for support restrictions: operator with left
annihilator. (Contributed by Stefan O'Rear, 9-Mar-2015.)
|
⊢ (𝜑 → (◡(𝑥 ∈ 𝐷 ↦ 𝐴) “ (V ∖ {𝑌})) ⊆ 𝐿)
& ⊢ ((𝜑 ∧ 𝑣 ∈ 𝑅) → (𝑌𝑂𝑣) = 𝑍)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐷) → 𝐴 ∈ 𝑉)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐷) → 𝐵 ∈ 𝑅) ⇒ ⊢ (𝜑 → (◡(𝑥 ∈ 𝐷 ↦ (𝐴𝑂𝐵)) “ (V ∖ {𝑍})) ⊆ 𝐿) |
|
2.6.12 Function operation
|
|
Syntax | cof 5948 |
Extend class notation to include mapping of an operation to a function
operation.
|
class ∘𝑓 𝑅 |
|
Syntax | cofr 5949 |
Extend class notation to include mapping of a binary relation to a
function relation.
|
class ∘𝑟 𝑅 |
|
Definition | df-of 5950* |
Define the function operation map. The definition is designed so that
if 𝑅 is a binary operation, then ∘𝑓 𝑅 is the analogous operation
on functions which corresponds to applying 𝑅 pointwise to the values
of the functions. (Contributed by Mario Carneiro, 20-Jul-2014.)
|
⊢ ∘𝑓 𝑅 = (𝑓 ∈ V, 𝑔 ∈ V ↦ (𝑥 ∈ (dom 𝑓 ∩ dom 𝑔) ↦ ((𝑓‘𝑥)𝑅(𝑔‘𝑥)))) |
|
Definition | df-ofr 5951* |
Define the function relation map. The definition is designed so that if
𝑅 is a binary relation, then ∘𝑓 𝑅 is the analogous relation on
functions which is true when each element of the left function relates
to the corresponding element of the right function. (Contributed by
Mario Carneiro, 28-Jul-2014.)
|
⊢ ∘𝑟 𝑅 = {〈𝑓, 𝑔〉 ∣ ∀𝑥 ∈ (dom 𝑓 ∩ dom 𝑔)(𝑓‘𝑥)𝑅(𝑔‘𝑥)} |
|
Theorem | ofeq 5952 |
Equality theorem for function operation. (Contributed by Mario
Carneiro, 20-Jul-2014.)
|
⊢ (𝑅 = 𝑆 → ∘𝑓 𝑅 = ∘𝑓
𝑆) |
|
Theorem | ofreq 5953 |
Equality theorem for function relation. (Contributed by Mario Carneiro,
28-Jul-2014.)
|
⊢ (𝑅 = 𝑆 → ∘𝑟 𝑅 = ∘𝑟
𝑆) |
|
Theorem | ofexg 5954 |
A function operation restricted to a set is a set. (Contributed by NM,
28-Jul-2014.)
|
⊢ (𝐴 ∈ 𝑉 → ( ∘𝑓 𝑅 ↾ 𝐴) ∈ V) |
|
Theorem | nfof 5955 |
Hypothesis builder for function operation. (Contributed by Mario
Carneiro, 20-Jul-2014.)
|
⊢ Ⅎ𝑥𝑅 ⇒ ⊢ Ⅎ𝑥 ∘𝑓
𝑅 |
|
Theorem | nfofr 5956 |
Hypothesis builder for function relation. (Contributed by Mario
Carneiro, 28-Jul-2014.)
|
⊢ Ⅎ𝑥𝑅 ⇒ ⊢ Ⅎ𝑥 ∘𝑟
𝑅 |
|
Theorem | offval 5957* |
Value of an operation applied to two functions. (Contributed by Mario
Carneiro, 20-Jul-2014.)
|
⊢ (𝜑 → 𝐹 Fn 𝐴)
& ⊢ (𝜑 → 𝐺 Fn 𝐵)
& ⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐵 ∈ 𝑊)
& ⊢ (𝐴 ∩ 𝐵) = 𝑆
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) = 𝐶)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝐺‘𝑥) = 𝐷) ⇒ ⊢ (𝜑 → (𝐹 ∘𝑓 𝑅𝐺) = (𝑥 ∈ 𝑆 ↦ (𝐶𝑅𝐷))) |
|
Theorem | ofrfval 5958* |
Value of a relation applied to two functions. (Contributed by Mario
Carneiro, 28-Jul-2014.)
|
⊢ (𝜑 → 𝐹 Fn 𝐴)
& ⊢ (𝜑 → 𝐺 Fn 𝐵)
& ⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐵 ∈ 𝑊)
& ⊢ (𝐴 ∩ 𝐵) = 𝑆
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) = 𝐶)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝐺‘𝑥) = 𝐷) ⇒ ⊢ (𝜑 → (𝐹 ∘𝑟 𝑅𝐺 ↔ ∀𝑥 ∈ 𝑆 𝐶𝑅𝐷)) |
|
Theorem | ofvalg 5959 |
Evaluate a function operation at a point. (Contributed by Mario
Carneiro, 20-Jul-2014.) (Revised by Jim Kingdon, 22-Nov-2023.)
|
⊢ (𝜑 → 𝐹 Fn 𝐴)
& ⊢ (𝜑 → 𝐺 Fn 𝐵)
& ⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐵 ∈ 𝑊)
& ⊢ (𝐴 ∩ 𝐵) = 𝑆
& ⊢ ((𝜑 ∧ 𝑋 ∈ 𝐴) → (𝐹‘𝑋) = 𝐶)
& ⊢ ((𝜑 ∧ 𝑋 ∈ 𝐵) → (𝐺‘𝑋) = 𝐷)
& ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑆) → (𝐶𝑅𝐷) ∈ 𝑈) ⇒ ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑆) → ((𝐹 ∘𝑓 𝑅𝐺)‘𝑋) = (𝐶𝑅𝐷)) |
|
Theorem | ofrval 5960 |
Exhibit a function relation at a point. (Contributed by Mario
Carneiro, 28-Jul-2014.)
|
⊢ (𝜑 → 𝐹 Fn 𝐴)
& ⊢ (𝜑 → 𝐺 Fn 𝐵)
& ⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐵 ∈ 𝑊)
& ⊢ (𝐴 ∩ 𝐵) = 𝑆
& ⊢ ((𝜑 ∧ 𝑋 ∈ 𝐴) → (𝐹‘𝑋) = 𝐶)
& ⊢ ((𝜑 ∧ 𝑋 ∈ 𝐵) → (𝐺‘𝑋) = 𝐷) ⇒ ⊢ ((𝜑 ∧ 𝐹 ∘𝑟 𝑅𝐺 ∧ 𝑋 ∈ 𝑆) → 𝐶𝑅𝐷) |
|
Theorem | ofmresval 5961 |
Value of a restriction of the function operation map. (Contributed by
NM, 20-Oct-2014.)
|
⊢ (𝜑 → 𝐹 ∈ 𝐴)
& ⊢ (𝜑 → 𝐺 ∈ 𝐵) ⇒ ⊢ (𝜑 → (𝐹( ∘𝑓 𝑅 ↾ (𝐴 × 𝐵))𝐺) = (𝐹 ∘𝑓 𝑅𝐺)) |
|
Theorem | off 5962* |
The function operation produces a function. (Contributed by Mario
Carneiro, 20-Jul-2014.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑇)) → (𝑥𝑅𝑦) ∈ 𝑈)
& ⊢ (𝜑 → 𝐹:𝐴⟶𝑆)
& ⊢ (𝜑 → 𝐺:𝐵⟶𝑇)
& ⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐵 ∈ 𝑊)
& ⊢ (𝐴 ∩ 𝐵) = 𝐶 ⇒ ⊢ (𝜑 → (𝐹 ∘𝑓 𝑅𝐺):𝐶⟶𝑈) |
|
Theorem | offeq 5963* |
Convert an identity of the operation to the analogous identity on
the function operation. (Contributed by Jim Kingdon,
26-Nov-2023.)
|
⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑇)) → (𝑥𝑅𝑦) ∈ 𝑈)
& ⊢ (𝜑 → 𝐹:𝐴⟶𝑆)
& ⊢ (𝜑 → 𝐺:𝐵⟶𝑇)
& ⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐵 ∈ 𝑊)
& ⊢ (𝐴 ∩ 𝐵) = 𝐶
& ⊢ (𝜑 → 𝐻:𝐶⟶𝑈)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) = 𝐷)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐵) → (𝐺‘𝑥) = 𝐸)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐶) → (𝐷𝑅𝐸) = (𝐻‘𝑥)) ⇒ ⊢ (𝜑 → (𝐹 ∘𝑓 𝑅𝐺) = 𝐻) |
|
Theorem | ofres 5964 |
Restrict the operands of a function operation to the same domain as that
of the operation itself. (Contributed by Mario Carneiro,
15-Sep-2014.)
|
⊢ (𝜑 → 𝐹 Fn 𝐴)
& ⊢ (𝜑 → 𝐺 Fn 𝐵)
& ⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐵 ∈ 𝑊)
& ⊢ (𝐴 ∩ 𝐵) = 𝐶 ⇒ ⊢ (𝜑 → (𝐹 ∘𝑓 𝑅𝐺) = ((𝐹 ↾ 𝐶) ∘𝑓 𝑅(𝐺 ↾ 𝐶))) |
|
Theorem | offval2 5965* |
The function operation expressed as a mapping. (Contributed by Mario
Carneiro, 20-Jul-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑊)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝑋)
& ⊢ (𝜑 → 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵)) & ⊢ (𝜑 → 𝐺 = (𝑥 ∈ 𝐴 ↦ 𝐶)) ⇒ ⊢ (𝜑 → (𝐹 ∘𝑓 𝑅𝐺) = (𝑥 ∈ 𝐴 ↦ (𝐵𝑅𝐶))) |
|
Theorem | ofrfval2 5966* |
The function relation acting on maps. (Contributed by Mario Carneiro,
20-Jul-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑊)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝑋)
& ⊢ (𝜑 → 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵)) & ⊢ (𝜑 → 𝐺 = (𝑥 ∈ 𝐴 ↦ 𝐶)) ⇒ ⊢ (𝜑 → (𝐹 ∘𝑟 𝑅𝐺 ↔ ∀𝑥 ∈ 𝐴 𝐵𝑅𝐶)) |
|
Theorem | suppssof1 5967* |
Formula building theorem for support restrictions: vector operation with
left annihilator. (Contributed by Stefan O'Rear, 9-Mar-2015.)
|
⊢ (𝜑 → (◡𝐴 “ (V ∖ {𝑌})) ⊆ 𝐿)
& ⊢ ((𝜑 ∧ 𝑣 ∈ 𝑅) → (𝑌𝑂𝑣) = 𝑍)
& ⊢ (𝜑 → 𝐴:𝐷⟶𝑉)
& ⊢ (𝜑 → 𝐵:𝐷⟶𝑅)
& ⊢ (𝜑 → 𝐷 ∈ 𝑊) ⇒ ⊢ (𝜑 → (◡(𝐴 ∘𝑓 𝑂𝐵) “ (V ∖ {𝑍})) ⊆ 𝐿) |
|
Theorem | ofco 5968 |
The composition of a function operation with another function.
(Contributed by Mario Carneiro, 19-Dec-2014.)
|
⊢ (𝜑 → 𝐹 Fn 𝐴)
& ⊢ (𝜑 → 𝐺 Fn 𝐵)
& ⊢ (𝜑 → 𝐻:𝐷⟶𝐶)
& ⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐵 ∈ 𝑊)
& ⊢ (𝜑 → 𝐷 ∈ 𝑋)
& ⊢ (𝐴 ∩ 𝐵) = 𝐶 ⇒ ⊢ (𝜑 → ((𝐹 ∘𝑓 𝑅𝐺) ∘ 𝐻) = ((𝐹 ∘ 𝐻) ∘𝑓 𝑅(𝐺 ∘ 𝐻))) |
|
Theorem | offveqb 5969* |
Equivalent expressions for equality with a function operation.
(Contributed by NM, 9-Oct-2014.) (Proof shortened by Mario Carneiro,
5-Dec-2016.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐹 Fn 𝐴)
& ⊢ (𝜑 → 𝐺 Fn 𝐴)
& ⊢ (𝜑 → 𝐻 Fn 𝐴)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐹‘𝑥) = 𝐵)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐺‘𝑥) = 𝐶) ⇒ ⊢ (𝜑 → (𝐻 = (𝐹 ∘𝑓 𝑅𝐺) ↔ ∀𝑥 ∈ 𝐴 (𝐻‘𝑥) = (𝐵𝑅𝐶))) |
|
Theorem | ofc12 5970 |
Function operation on two constant functions. (Contributed by Mario
Carneiro, 28-Jul-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐵 ∈ 𝑊)
& ⊢ (𝜑 → 𝐶 ∈ 𝑋) ⇒ ⊢ (𝜑 → ((𝐴 × {𝐵}) ∘𝑓 𝑅(𝐴 × {𝐶})) = (𝐴 × {(𝐵𝑅𝐶)})) |
|
Theorem | caofref 5971* |
Transfer a reflexive law to the function relation. (Contributed by
Mario Carneiro, 28-Jul-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐹:𝐴⟶𝑆)
& ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → 𝑥𝑅𝑥) ⇒ ⊢ (𝜑 → 𝐹 ∘𝑟 𝑅𝐹) |
|
Theorem | caofinvl 5972* |
Transfer a left inverse law to the function operation. (Contributed
by NM, 22-Oct-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐹:𝐴⟶𝑆)
& ⊢ (𝜑 → 𝐵 ∈ 𝑊)
& ⊢ (𝜑 → 𝑁:𝑆⟶𝑆)
& ⊢ (𝜑 → 𝐺 = (𝑣 ∈ 𝐴 ↦ (𝑁‘(𝐹‘𝑣)))) & ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑆) → ((𝑁‘𝑥)𝑅𝑥) = 𝐵) ⇒ ⊢ (𝜑 → (𝐺 ∘𝑓 𝑅𝐹) = (𝐴 × {𝐵})) |
|
Theorem | caofcom 5973* |
Transfer a commutative law to the function operation. (Contributed by
Mario Carneiro, 26-Jul-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐹:𝐴⟶𝑆)
& ⊢ (𝜑 → 𝐺:𝐴⟶𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝑅𝑦) = (𝑦𝑅𝑥)) ⇒ ⊢ (𝜑 → (𝐹 ∘𝑓 𝑅𝐺) = (𝐺 ∘𝑓 𝑅𝐹)) |
|
Theorem | caofrss 5974* |
Transfer a relation subset law to the function relation. (Contributed
by Mario Carneiro, 28-Jul-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐹:𝐴⟶𝑆)
& ⊢ (𝜑 → 𝐺:𝐴⟶𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆)) → (𝑥𝑅𝑦 → 𝑥𝑇𝑦)) ⇒ ⊢ (𝜑 → (𝐹 ∘𝑟 𝑅𝐺 → 𝐹 ∘𝑟 𝑇𝐺)) |
|
Theorem | caoftrn 5975* |
Transfer a transitivity law to the function relation. (Contributed by
Mario Carneiro, 28-Jul-2014.)
|
⊢ (𝜑 → 𝐴 ∈ 𝑉)
& ⊢ (𝜑 → 𝐹:𝐴⟶𝑆)
& ⊢ (𝜑 → 𝐺:𝐴⟶𝑆)
& ⊢ (𝜑 → 𝐻:𝐴⟶𝑆)
& ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑆 ∧ 𝑦 ∈ 𝑆 ∧ 𝑧 ∈ 𝑆)) → ((𝑥𝑅𝑦 ∧ 𝑦𝑇𝑧) → 𝑥𝑈𝑧)) ⇒ ⊢ (𝜑 → ((𝐹 ∘𝑟 𝑅𝐺 ∧ 𝐺 ∘𝑟 𝑇𝐻) → 𝐹 ∘𝑟 𝑈𝐻)) |
|
2.6.13 Functions (continued)
|
|
Theorem | resfunexgALT 5976 |
The restriction of a function to a set exists. Compare Proposition 6.17
of [TakeutiZaring] p. 28. This
version has a shorter proof than
resfunexg 5609 but requires ax-pow 4068 and ax-un 4325. (Contributed by NM,
7-Apr-1995.) (Proof modification is discouraged.)
(New usage is discouraged.)
|
⊢ ((Fun 𝐴 ∧ 𝐵 ∈ 𝐶) → (𝐴 ↾ 𝐵) ∈ V) |
|
Theorem | cofunexg 5977 |
Existence of a composition when the first member is a function.
(Contributed by NM, 8-Oct-2007.)
|
⊢ ((Fun 𝐴 ∧ 𝐵 ∈ 𝐶) → (𝐴 ∘ 𝐵) ∈ V) |
|
Theorem | cofunex2g 5978 |
Existence of a composition when the second member is one-to-one.
(Contributed by NM, 8-Oct-2007.)
|
⊢ ((𝐴 ∈ 𝑉 ∧ Fun ◡𝐵) → (𝐴 ∘ 𝐵) ∈ V) |
|
Theorem | fnexALT 5979 |
If the domain of a function is a set, the function is a set. Theorem
6.16(1) of [TakeutiZaring] p. 28.
This theorem is derived using the Axiom
of Replacement in the form of funimaexg 5177. This version of fnex 5610
uses
ax-pow 4068 and ax-un 4325, whereas fnex 5610
does not. (Contributed by NM,
14-Aug-1994.) (Proof modification is discouraged.)
(New usage is discouraged.)
|
⊢ ((𝐹 Fn 𝐴 ∧ 𝐴 ∈ 𝐵) → 𝐹 ∈ V) |
|
Theorem | funrnex 5980 |
If the domain of a function exists, so does its range. Part of Theorem
4.15(v) of [Monk1] p. 46. This theorem is
derived using the Axiom of
Replacement in the form of funex 5611. (Contributed by NM, 11-Nov-1995.)
|
⊢ (dom 𝐹 ∈ 𝐵 → (Fun 𝐹 → ran 𝐹 ∈ V)) |
|
Theorem | fornex 5981 |
If the domain of an onto function exists, so does its codomain.
(Contributed by NM, 23-Jul-2004.)
|
⊢ (𝐴 ∈ 𝐶 → (𝐹:𝐴–onto→𝐵 → 𝐵 ∈ V)) |
|
Theorem | f1dmex 5982 |
If the codomain of a one-to-one function exists, so does its domain. This
can be thought of as a form of the Axiom of Replacement. (Contributed by
NM, 4-Sep-2004.)
|
⊢ ((𝐹:𝐴–1-1→𝐵 ∧ 𝐵 ∈ 𝐶) → 𝐴 ∈ V) |
|
Theorem | abrexex 5983* |
Existence of a class abstraction of existentially restricted sets. 𝑥
is normally a free-variable parameter in the class expression
substituted for 𝐵, which can be thought of as 𝐵(𝑥). This
simple-looking theorem is actually quite powerful and appears to involve
the Axiom of Replacement in an intrinsic way, as can be seen by tracing
back through the path mptexg 5613, funex 5611, fnex 5610, resfunexg 5609, and
funimaexg 5177. See also abrexex2 5990. (Contributed by NM, 16-Oct-2003.)
(Proof shortened by Mario Carneiro, 31-Aug-2015.)
|
⊢ 𝐴 ∈ V ⇒ ⊢ {𝑦 ∣ ∃𝑥 ∈ 𝐴 𝑦 = 𝐵} ∈ V |
|
Theorem | abrexexg 5984* |
Existence of a class abstraction of existentially restricted sets. 𝑥
is normally a free-variable parameter in 𝐵. The antecedent assures
us that 𝐴 is a set. (Contributed by NM,
3-Nov-2003.)
|
⊢ (𝐴 ∈ 𝑉 → {𝑦 ∣ ∃𝑥 ∈ 𝐴 𝑦 = 𝐵} ∈ V) |
|
Theorem | iunexg 5985* |
The existence of an indexed union. 𝑥 is normally a free-variable
parameter in 𝐵. (Contributed by NM, 23-Mar-2006.)
|
⊢ ((𝐴 ∈ 𝑉 ∧ ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑊) → ∪ 𝑥 ∈ 𝐴 𝐵 ∈ V) |
|
Theorem | abrexex2g 5986* |
Existence of an existentially restricted class abstraction.
(Contributed by Jeff Madsen, 2-Sep-2009.)
|
⊢ ((𝐴 ∈ 𝑉 ∧ ∀𝑥 ∈ 𝐴 {𝑦 ∣ 𝜑} ∈ 𝑊) → {𝑦 ∣ ∃𝑥 ∈ 𝐴 𝜑} ∈ V) |
|
Theorem | opabex3d 5987* |
Existence of an ordered pair abstraction, deduction version.
(Contributed by Alexander van der Vekens, 19-Oct-2017.)
|
⊢ (𝜑 → 𝐴 ∈ V) & ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → {𝑦 ∣ 𝜓} ∈ V) ⇒ ⊢ (𝜑 → {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝐴 ∧ 𝜓)} ∈ V) |
|
Theorem | opabex3 5988* |
Existence of an ordered pair abstraction. (Contributed by Jeff Madsen,
2-Sep-2009.)
|
⊢ 𝐴 ∈ V & ⊢ (𝑥 ∈ 𝐴 → {𝑦 ∣ 𝜑} ∈ V) ⇒ ⊢ {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝐴 ∧ 𝜑)} ∈ V |
|
Theorem | iunex 5989* |
The existence of an indexed union. 𝑥 is normally a free-variable
parameter in the class expression substituted for 𝐵, which can be
read informally as 𝐵(𝑥). (Contributed by NM, 13-Oct-2003.)
|
⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈
V ⇒ ⊢ ∪ 𝑥 ∈ 𝐴 𝐵 ∈ V |
|
Theorem | abrexex2 5990* |
Existence of an existentially restricted class abstraction. 𝜑 is
normally has free-variable parameters 𝑥 and 𝑦. See
also
abrexex 5983. (Contributed by NM, 12-Sep-2004.)
|
⊢ 𝐴 ∈ V & ⊢ {𝑦 ∣ 𝜑} ∈ V ⇒ ⊢ {𝑦 ∣ ∃𝑥 ∈ 𝐴 𝜑} ∈ V |
|
Theorem | abexssex 5991* |
Existence of a class abstraction with an existentially quantified
expression. Both 𝑥 and 𝑦 can be free in 𝜑.
(Contributed
by NM, 29-Jul-2006.)
|
⊢ 𝐴 ∈ V & ⊢ {𝑦 ∣ 𝜑} ∈ V ⇒ ⊢ {𝑦 ∣ ∃𝑥(𝑥 ⊆ 𝐴 ∧ 𝜑)} ∈ V |
|
Theorem | abexex 5992* |
A condition where a class builder continues to exist after its wff is
existentially quantified. (Contributed by NM, 4-Mar-2007.)
|
⊢ 𝐴 ∈ V & ⊢ (𝜑 → 𝑥 ∈ 𝐴)
& ⊢ {𝑦 ∣ 𝜑} ∈ V ⇒ ⊢ {𝑦 ∣ ∃𝑥𝜑} ∈ V |
|
Theorem | oprabexd 5993* |
Existence of an operator abstraction. (Contributed by Jeff Madsen,
2-Sep-2009.)
|
⊢ (𝜑 → 𝐴 ∈ V) & ⊢ (𝜑 → 𝐵 ∈ V) & ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵)) → ∃*𝑧𝜓)
& ⊢ (𝜑 → 𝐹 = {〈〈𝑥, 𝑦〉, 𝑧〉 ∣ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝜓)}) ⇒ ⊢ (𝜑 → 𝐹 ∈ V) |
|
Theorem | oprabex 5994* |
Existence of an operation class abstraction. (Contributed by NM,
19-Oct-2004.)
|
⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈ V & ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) → ∃*𝑧𝜑)
& ⊢ 𝐹 = {〈〈𝑥, 𝑦〉, 𝑧〉 ∣ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) ∧ 𝜑)} ⇒ ⊢ 𝐹 ∈ V |
|
Theorem | oprabex3 5995* |
Existence of an operation class abstraction (special case).
(Contributed by NM, 19-Oct-2004.)
|
⊢ 𝐻 ∈ V & ⊢ 𝐹 = {〈〈𝑥, 𝑦〉, 𝑧〉 ∣ ((𝑥 ∈ (𝐻 × 𝐻) ∧ 𝑦 ∈ (𝐻 × 𝐻)) ∧ ∃𝑤∃𝑣∃𝑢∃𝑓((𝑥 = 〈𝑤, 𝑣〉 ∧ 𝑦 = 〈𝑢, 𝑓〉) ∧ 𝑧 = 𝑅))} ⇒ ⊢ 𝐹 ∈ V |
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Theorem | oprabrexex2 5996* |
Existence of an existentially restricted operation abstraction.
(Contributed by Jeff Madsen, 11-Jun-2010.)
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⊢ 𝐴 ∈ V & ⊢
{〈〈𝑥,
𝑦〉, 𝑧〉 ∣ 𝜑} ∈ V ⇒ ⊢ {〈〈𝑥, 𝑦〉, 𝑧〉 ∣ ∃𝑤 ∈ 𝐴 𝜑} ∈ V |
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Theorem | ab2rexex 5997* |
Existence of a class abstraction of existentially restricted sets.
Variables 𝑥 and 𝑦 are normally
free-variable parameters in the
class expression substituted for 𝐶, which can be thought of as
𝐶(𝑥, 𝑦). See comments for abrexex 5983. (Contributed by NM,
20-Sep-2011.)
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⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈
V ⇒ ⊢ {𝑧 ∣ ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝑧 = 𝐶} ∈ V |
|
Theorem | ab2rexex2 5998* |
Existence of an existentially restricted class abstraction. 𝜑
normally has free-variable parameters 𝑥, 𝑦, and 𝑧.
Compare abrexex2 5990. (Contributed by NM, 20-Sep-2011.)
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⊢ 𝐴 ∈ V & ⊢ 𝐵 ∈ V & ⊢ {𝑧 ∣ 𝜑} ∈ V ⇒ ⊢ {𝑧 ∣ ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 𝜑} ∈ V |
|
Theorem | xpexgALT 5999 |
The cross product of two sets is a set. Proposition 6.2 of
[TakeutiZaring] p. 23. This
version is proven using Replacement; see
xpexg 4623 for a version that uses the Power Set axiom
instead.
(Contributed by Mario Carneiro, 20-May-2013.)
(Proof modification is discouraged.) (New usage is discouraged.)
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⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) |
|
Theorem | offval3 6000* |
General value of (𝐹 ∘𝑓 𝑅𝐺) with no assumptions on
functionality
of 𝐹 and 𝐺. (Contributed by Stefan
O'Rear, 24-Jan-2015.)
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⊢ ((𝐹 ∈ 𝑉 ∧ 𝐺 ∈ 𝑊) → (𝐹 ∘𝑓 𝑅𝐺) = (𝑥 ∈ (dom 𝐹 ∩ dom 𝐺) ↦ ((𝐹‘𝑥)𝑅(𝐺‘𝑥)))) |