Saturday, January 14, 2017

Set-builder notation - Wikipedia

Set-builder notation - Wikipedia: "Defined sets by properties is also known as set comprehension, set abstraction or as defining a set's intension.
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Monday, January 09, 2017

Morphism - Wikipedia

Morphism - Wikipedia: "Examples[edit]
In the concrete categories studied in universal algebra (groups, rings, modules, etc.), morphisms are usually homomorphisms. Likewise, the notions of automorphism, endomorphism, epimorphism, homeomorphism, isomorphism, and monomorphism all find use in universal algebra.
In the category of topological spaces, morphisms are continuous functions and isomorphisms are called homeomorphisms.
In the category of smooth manifolds, morphisms are smooth functions and isomorphisms are called diffeomorphisms."

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