## On the cone eigenvalue complementarity problem for higher-order tensors

In this paper, we consider the tensor generalized eigenvalue complementarity problem (TGEiCP), which is an interesting generalization of matrix eigenvalue complementarity problem (EiCP). First, we given an affirmative result showing that TGEiCP is solvable and has at least one solution under some reasonable assumptions. Then, we introduce two optimization reformulations of TGEiCP, thereby beneficially establishing … Read more

## There is no variational characterization of the cycles in the method of periodic projections

The method of periodic projections consists in iterating projections onto \$m\$ closed convex subsets of a Hilbert space according to a periodic sweeping strategy. In the presence of \$m\geq 3\$ sets, a long-standing question going back to the 1960s is whether the limit cycles obtained by such a process can be characterized as the minimizers … Read more