Hadamard's dynamical system

Known as: Hadamard's billiards, Hadamard dynamical system, Hadamard billiards

In physics and mathematics, the Hadamard dynamical system or Hadamard's billiard is a chaotic dynamical system, a type of dynamical billiards… (More)

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2017

The concepts of circulant and back circulant matrices are generalized to obtain incidence matrices of subsets of finite additive… (More)

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2010

In this paper, we show that exactly one Hadamard matrix constructed using the twin prime power method is cocyclic. We achieve… (More)

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2007

To any complex Hadamard matrix H one associates a spin model commuting square, and therefore a hyperfinite subfactor. The… (More)

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1997

We show that a family of cyclic Hadamard designs defined from regular ovals is a sub-family of a class of difference set designs… (More)

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