Mimicking the mentioned link between SRGs and projective two-weight codes, a construction of SRWGs as coset graphs of the duals of projective three-weight codes was given recently in [27]. The eigenvalues of such graphs are integral and depend on the weights of the three-weight code, so tha...
Definition wiki: A regular expression, regex or regexp(sometimes called a rational expression) is, in theoretical computer science and formal language theory, a sequence of characters that define a search pattern. Usually this pattern is then used by string searching algorithms for "find" or "fin...
Figure 1. (a) Notation and Cartesian coordinate system for a typical grating, triangular morphology (blue) and trapezoidal scheme (red). (b) Definition of the spatial domains D+, D−, D1 and D2. To express the grating problem mathematically, a little preparation is needed. Figure 1b de...