We verify the QED Ward identity for the twoand three -point functions at non-equilibrium in the HTL limit. We use the Keldysh formalism of real time finite temperature field theory. We obtain the same Ward identity for the one loop self-energy and the one loop three-point vertex when both diagrams are constructed from HTL effective propagators and vertices. Supported by BMBF, GSI Darmstadt, DFG...

In order to integrate identity authentication and key agreement, a novel academic thought is set out, a fasting one-way accumulator is constructed, and a fasting one-way accumulator-based key management protocol is put forward for Heterogeneous Sensor Networks (HSNs). The experiments and analysis show that the proposed protocol not only implements identity authentication function, but has high ...

-Mambo, et al. [3] discussed the delegation of signature power to a proxy signer. Lee, et al. [5] constructed a strong non-designated proxy signature scheme in which the proxy signer had strong nonrepudiation. In this paper, we present an enhancement to their scheme such that the identity of the proxy signer is hidden behind an alias. The identity can be revealed only by the alias authority. We...

It is shown that rational points over finite fields of moduli spaces of stable quiver representations are counted by polynomials with integer coefficients. These polynomials are constructed recursively using an identity in the Hall algebra of a quiver.

We show that the following problem is decidable: given are expressions E1 and E2 constructed from variables by the regular operations and shuffle. Is the identity E1 = E2 true for all instantiations of its variables by formal languages?

OBJECTIVE A new grandparent identity measure is constructed that allows us to compare grandparent identity meanings with the meanings of other adult identities and to investigate the relationships between identities and well-being. METHODS Data were collected in 1997 from 203 older grandmothers and grandfathers living in a metropolitan area. Grandparent and parent identity meanings are measur...

For any rational number p0 ≥ 1 we prove an identity of Rogers–Ramanujan– Gordon–Andrews’ type. Bijection between the space of states for XXZ model and that of XXX model is constructed.

This paper proposes to analyse the discursive construction of Portuguese national identity in the semi-public (media) discourse, namely how two apparently competing discourses on national identity (that of the elite and that of laypeople) represent and reframe the country’s national identity. I am interested in how these different types of participants coconstruct and negotiate (national) ident...