Two unnoticed pieces of medieval polyphony

Two Pieces by Dewey 1 Running head : TWO PIECES BY DEWEY Reflections on Two Pieces

Polyphony and Argumentative Semantics

We extract from sentences a superstructure made of argumentative operators and connectives applying to the remaining set of terminal sub-sentences. We found the argumentative interpretation of utterances on a semantics defined at the linguistic level. We describe the computation of this particular semantics, based on the constraints that the superstructure impels to the argumentative power of t...

Temporal Patterns in Polyphony

This paper formally characterizes the expressiveness of three approaches for polyphonic pattern representation and matching: R (relational patterns); H (Humdrum); and SPP (Structured Polyphonic Patterns). Relational networks have the highest expressiveness but H and SPP admit faster matching algorithms. It is shown how H and SPP can be cast as different restrictions of R, both providing an expr...

Partitioning a graph into two isomorphic pieces

A simple graph G has the neighbour-closed-co-neighbour property, or ncc property, if for all vertices x of G, the subgraph induced by the set of neighbours of x is isomorphic to the subgraph induced by the set of non-neighbours of x. We present characterizations of graphs with the ncc property via the existence of certain perfect matchings, and thereby prove that the ncc graphs can be recognize...

The Unnoticed Reef Builders

M, -ost divers, photographers and snorkelers ignore a vital part of the reef life when diving. Many people, attracted by the movement of bright colored tropical fish, crustaceans lurking under rocks or the spectacular forms of colorful corals, overlook the starting point in the food chain, the plants. Without plant life to convert food energy from sunlight, there would be no animals. Herbivores...