<sod>In  [[mathematics]] and [[philosophy]], a '''property''' is a characteristic of an [[Object (philosophy)|object]]; a red object is said to have the property of redness. The property may be considered a form of object in its own right, able to possess other properties. A property however differs from individual objects in that it may be [[instantiation principle|instantiated]], and often in more than one thing. It differs from the logical/mathematical concept of [[class (set theory)|class]] by not having any concept of [[extensionality]], and from the philosophical concept of [[class (philosophy)|class]] in that a property is considered to be distinct from the objects which possess it. Understanding how different individual entities (or particulars) can in some sense have some of the same properties is the basis of the [[problem of universals]]. The terms '''attribute''' and '''quality''' have similar meanings.<eod>
<sod>In [[philosophy]] and [[mathematics]], a '''property''' is a characteristic of an [[Object (philosophy)|object]]; a red object is said to have the property of redness. The property may be considered a form of object in its own right, able to possess other properties. A property however differs from individual objects in that it may be [[instantiation principle|instantiated]], and often in more than one thing. It differs from the logical/mathematical concept of [[class (set theory)|class]] by not having any concept of [[extensionality]], and from the philosophical concept of [[class (philosophy)|class]] in that a property is considered to be distinct from the objects which possess it. Understanding how different individual entities (or particulars) can in some sense have some of the same properties is the basis of the [[problem of universals]]. The terms '''attribute''' and '''quality''' have similar meanings.<eod>