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Most speech scrambling systems are either linear periodic filters or can be modeled as such. It is well-known that from an input-output point of view, a periodic filter is equivalent to a multi-input multi-output linear time-invariant system and thus a rational transfer matrix. In this paper, we propose a framework, based on transfer matrices and frequency(More)
We consider a model of self-avoiding walks on the lattice Z d with different weights for steps in each of the 2d lattice directions. We find that the direction-dependent mass for the two-point function of this model has three phases: mass positive in all directions; mass identically −∞; and masses of different signs in different directions. The final(More)
A-G S. Aaronson (I), Generalizing and derandomizing Gurvits's approximation algorithm for the permanent (7&8) 541 S. Aaronson (II), BosonSampling is far from uniform (15&16) 1383 P. Agrawal, see I. Chakrabarty C.D. de Albuquerque, Families of codes of topological quantum codes from tessellations tessellations {4i+2,2i+1}, {4i,4i}, {8i-4,4} and ${12i-6,3}(More)
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