On Model Subtyping

The  suffering  of  caregivers  starts  with  overwork  and  the  exhaustion  it  causes.  This,  in  turn,  results  in 

A necessary condition for behavioural subtyping between classes is signature subtyping: objects in a subclass should at least have all the methods that objects in the superclass

Garbage collection uses this information to throw away meaningless constraints. A constraint is only useful if it ac- tually constrains the type scheme, i.e. if it can potentially

With the arrow type constructor, instead, this can be done only by using a typing relation, and this yields to the circularity we hinted at in the introduction and that is shown

A subtype extends its supertype if its objects have extra methods in addition to those of the supertype. Abstraction functions for extension subtypes are onto, i.e., the range of

Theorem 10 The first-order theory of structural subtyp- ing constraints with a single constant symbol is decidable for both simple and recursive types (and infinite

have shown, in [CP12], that there exists no algorithm computing a simple and equitable fair division for n ≥ 3 players in the Roberston-Webb model.. The strategy used in these

•Partial subtyping: Models typed by A can be safely used in a given context in which models typed by B are expected (e.g., a given model transformation). A family