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An exact analysis is given of the benefits of using the non-adjacent form representation for integers (rather than the binary representation), when computing powers of elements in a group in which inverting is easy. By counting the number of multiplications for a random exponent requiring a given number of bits in its binary representation, we arrive at a precise version of the known asymptotic result that on average one in three signed bits in the non-adjacent form is non-zero. This shows that...
The aim of this work is to introduce and to analyze new algorithms for solving the
transport neutronique equation in 2D geometry. These algorithms present the duplicate favors to be,
on the one hand faster than some classic algorithms and easily to be implemented and naturally
deviced for parallelisation on the other hand. They are based on a splitting of the collision operator
holding amount of caracteristics of the transport operator. Some numerical results are given at the end
of this work.
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