As the number of systems which offer annotations on digital documents increases, robust anchoring of annotations is a key challenge. It is especially important if the annotator lacks write-access to the document being annotated. For example, if someone makes an annotation on a web page today and the web page changes tomorrow, what happens to the annotation? One approach is simply to “orphan” th...

This paper represents a continuation of [1] and [2]. Here, we consider the numerical analysis non-trivial frictional contact problem in form system evolution nonlinear partial differential equations. The model describes equilibrium viscoelastic body sliding with moving foundation. is modeled multivalued normal compliance condition memory term restricted by unilateral constraint associated versi...