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

The eigenvectors corresponding to the second eigenvalue of the google matrix and their relation to link spamming

Google uses the PageRank algorithm to determine the relative importance of a website. Link spamming is the name for putting links between websites with no other purpose than to increase the PageRank value of a website. To give a fair result to a search query it is important to detect whether a website is link spammed so that it can be filtered...

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...