In Section 3, we additionally characterize, within gem-free circular-arc graphs, two further superclasses
of balanced graphs: cliqueperfect and coordinated graphs (see Section 3 for the definitions).
For instance, the marked changes between level-one classes applied mainly to denser populated/urban regions, whereas level-three changes (within the level-two superclasses
) were mainly observed in the higher Alpine regions (mostly changes of the class "Glaciers and perpetual snow", see also Figure 6(a)).
Our construction instead utilizes actions of [UT.sub.n]([F.sub.q]) on the Lie algebras of the unitriangular groups in types B, C and D to define superclasses
Subclasses are not included in the attributes of the class because they could be inspired by considering the superclasses
list of subclasses.
Fifth, they are formally encoded for machine processing, for example, (fuel-pump has (superclasses
Swimming is rapidly losing its image as the poor relation of strenuous sports like running or superclasses
If BD is a class then D would require multiple inheritance of superclasses
. If BD were an interface, then the instance variables of B and D are not representable (Java interfaces may include static fields, but not instance fields).
In addition, classes may coexist in a class base only if no class consists of exactly the union of the properties of any other classes in the class base (this means a subclass must have properties in addition to the union of the properties of its superclasses
) [Parsons and Wand 1997a].
In a hierarchy, information flows in two directions: vertically, between classes, superclasses
, and subclasses, and also laterally, between sibling classes (classes sharing the same superclass).
Similarly, it is also cumbersome to query all immediate subclasses, superclasses
, and immediate instances of a class in F-logic.
We typically call the blocks of K superclasses
. For each B [member of] X we choose constants [c.sub.B] [member of] [Q.sub.>0] such that