We consider a class of analytic area-preserving mappings Cmsmoothly depending on a parameter.Without imposing on any non-degeneracy assumption,we prove a formal
We study a functional modelling the progressive lens design,which is a combination of Willmore functional and total Gauss curvature.First,we prove the existence
We give a Brualdi-type Z-eigenvalue inclusion set of tensors,and prove that it is tighter than the inclusion set given by G.Wang,G.L.Zhou,and L.Caccetta[Discret
For all generic q ∈ C*,when g is not of type A1,we prove that the quantum toroidal algebra Uq(gtor) has no nontrivial finite dimensional simple module.