Enhancing iterative solution methods for general FEM computations using rigid body modes.

The second eigenvector of the Google matrix and its relation to link spamming

Google PageRank attempts to return the best ranking of websites when searching on the web. To find this ranking, Google introduces a Markov matrix to model the behaviour of internet users. We find that using irreducible closed subsets is an effective way to unfairly increase the PageRank of a website (perform link spamming) and this can be...