DDF operators in the hybrid formalism

DDF Construction and D-Brane Boundary States in Pure Spinor Formalism

Open string boundary conditions for non-BPS D-branes in type II string theories discussed in hep-th/0505157 give rise to two sectors with integer (R sector) and half-integer (NS sector) modes for the combined fermionic matter and bosonic ghost variables in pure spinor formalism. Exploiting the manifest supersymmetry of the formalism we explicitly construct the DDF (Del Giuduce, Di Vecchia, Fubi...

Chapter 7 . DDF Domain

The dynamic dataflow (DDF) domain in Ptolemy is a superset of the synchronous dataflow (SDF) and Boolean dataflow (BDF) domains. In the SDF domain, a star consumes and produces a fixed number of particles per invocation (or “firing”). This static information (the number of particles produced or consumed for each star) makes possible compile-time scheduling. In the BDF domain, some actors with d...

Hybrid Systems Described by the Complementary Formalism

In recognition of the fact that many systems contain both continuous and discrete aspects, considerable study has been devoted recently to "hybrid systems." The formulation of equations of motion for hybrid systems in explicit form, including the condition/event rules and the description of the continuous dynamics for every possible mode, is in many cases a formidable task, and there is a clear...

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On the Formalism of Local Variational Differential Operators

The calculus of local variational differential operators introduced by B. L. Voronov, I. V. Tyutin, and Sh. S. Shakhverdiev is studied in the context of jet super space geometry. In a coordinate-free way, we relate these operators to variational multivectors, for which we introduce and compute the variational Poisson and Schouten brackets by means of a unifying algebraic scheme. We give a geome...