Editor's Message to Special Issue on Collaboration Technologies and Network Services that Enrich and Secure Our Society

We finally wish to remark that our results can be viewed as a first step towards the regularity theory of obstacle problems with integrands G being not of power growth.. The

It is shown that the space of invariant trilinear forms on smooth representations of a semisimple Lie group is finite dimensional if the group is a product of hyperbolic

This is applied in Section 3 to linear delayed neutral difference- differential equations and systems, with bounded operator-valued coefficients: For weighted LP-norms or

L. It is shown that the right-sided, left-sided, and symmetric maximal functions of any measurable function can be integrable only simultaneously. The analogous statement is proved

Surprisingly, such an analysis enables us to verify the simplicial ap- proximation property of X (cf. This shows that the original approach of Schauder is “correctable.” As it

Here we shall supply proofs for the estimates of some relevant arithmetic functions that are well-known in the number field case but not necessarily so in our function field case..

More recently, Hajdu and Szikszai [12] have investigated the original problem of Pillai when applied to sets of consecutive terms of Lucas and Lehmer sequences.. It is easy to see

Our proof of this motivates studying algebraic properties of the permutation π α, n (where α is any irrational and n is any positive integer) that orders the fractional parts {α}, {