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26 papers · 1 filter
Comparing EQP and MOD_{p^k}P using Polynomial Degree Lower Bounds
M. de Graaf, P. Valiant
We show that an oracle A that contains either 1/4 or 3/4 of all strings of length n can be used to separate EQP from the counting classes MOD_{p^k}P. Our proof makes use of the deg…
Reflectionless analytic difference operators III. Hilbert space aspects
S. N. M. Ruijsenaars
In the previous two parts of this series of papers, we introduced and studied a large class of analytic difference operators admitting reflectionless eigenfunctions, focusing on al…
Schedulers for Rule-based Constraint Programming
Krzysztof R. Apt, Sebastian Brand
We study here schedulers for a class of rules that naturally arise in the context of rule-based constraint programming. We systematically derive a scheduler for them from a generic…
Control of Spatially Heterogeneous and Time-Varying Cellular Reaction Networks: A New Summation Law
Mark A. Peletier, Hans V. Westerhoff, Boris N. Kholodenko
A hallmark of a plethora of intracellular signaling pathways is the spatial separation of activation and deactivation processes that potentially results in precipitous gradients of…
Quantum Zero-Error Algorithms Cannot be Composed
Harry Buhrman, Ronald de Wolf
We exhibit two black-box problems, both of which have an efficient quantum algorithm with zero-error, yet whose composition does not have an efficient quantum algorithm with zero-e…
Dynamics of surface diffeomorphisms relative to homoclinic and heteroclinic orbits
Pieter Collins
The Nielsen-Thurston theory of surface diffeomorphisms shows that useful dynamical information can be obtained about a surface diffeomorphism from a finite collection of periodic o…