We show that an affine-invariant code C of length pm is not permutation equivalent to a cyclic code except in the obvious cases: m = 1 or C is either {0}, the repetition code or it...
In this note we prove the uniqueness of the tight spherical 7-design in R23 consisting of 4600 vectors and with automorphism group 2 ? Co2 as well as the uniqueness of the tight s...
Employing diagrams in the UI causes problems that don't exist in so called Graphical User Interfaces. We are implementing a tool for generating editors for a certain class of...
Collaborative object-based graphical editors offer good support for design teams to work concurrently on their design. However, not much research has been done on maintaining cons...
Awareness of individual and group activities is critical to successful collaboration and is commonly supported in collaborative graphics design systems (CGDS). Awareness of coopera...