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Ray-reps for Free-form Modeling: Line Membership Classi cation on CSRs

Low degree (typically 2, 3) tetrahedral implicit algebraic patches are gaining in popularity for modeling boundaries of free-form (sculptured) solids. A Constructive Shell Representation (CSR) is a union of truncated tetrahedra, called \trunctets", that form a thick shell containing the boundary of such a free-form solid. One bounding face of each trunctet is an algebraic patch, and the other f...

Membership Structures

A queer way of doing set theory in HOL (together with some queer reasons for doing it that way).

Membership Matters

This editorial seeks to answer a few simple questions and scotch some misconceptions about the Ulster Medical Society. It offers an invitation to those who have never joined the Society to consider membership. At the same time occasional attenders are reminded that the vitality of any society is best maintained by the regular interest of all its members. In turn it seeks your comments. What is ...

Understanding Membership

A membership service is used in a distributed system to maintain information about which sites are functioning and which have failed at any given time. Such services have proven to be fundamental for constructing distributed applications, with many example services and algorithms defined in the literature. Despite these efforts, however, little has been done on examining the abstract properties...

Work Group Membership