Oppositions-Ephemeride der Undina

Patent Oppositions

In recent years, patent protection has extended into new areas, giving rise to serious concern about the lack of clear guidelines for patentability. We analyze the effect of introducing a patent opposition process that would allow patent validity to be challenged directly after a patent is granted. In many cases, such a system would avoid costly litigation at a later date. In other cases, the o...

Nested Oppositions

Oppositions and quantum mechanics

In this paper we deal with two applications of the square of opposition to controversial issues in the philosophy of quantum mechanics. The first one concerns the kind of opposition represented by states in superposition. A superposition of “spin up” and “spin down” for a given spatial direction, for instance, is sometimes said to originate particular kinds of opposition such as contradictorine...

Oppositions in Rough Set Theory

The role of opposition in rough set theory is laid bare. There are two sources which generate oppositions in rough sets: approximations and relations. In the former case, we outline a hexagon and a cube of oppositions. In the second case, we define a classical square of oppositions and also a tetrahedron when considering the standpoint of two agents.

On Binary Oppositions in Filling Station

The modern American poet Elizabeth Bishop’s craftsmanship is fully shown in the keen, delicate observation, ingenious musicality, pure and accurate poetic diction, rich and vivid images in her poems. Filling Station is a poem depicting a decayed family-run station, unified by the pervasive presence of oil, and complete with filth and beauty, disorder and order, hope and decay, masculine and fem...