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Use of Block Toeplitz Matrix in the Study of Möbius Pairs of Simplexes in Higher-Dimensional Projective Space

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A simplex in a projective space of dimension n is expressed by a matrix of order n  + 1, where each row represents the homogeneous coordinates of a vertex of the… Click to show full abstract

A simplex in a projective space of dimension n is expressed by a matrix of order n  + 1, where each row represents the homogeneous coordinates of a vertex of the simplex with respect to a reference frame. In the present study, a block Toeplitz matrix is used to express a simplex which forms a Möbius pair along with the reference simplex. A pair of mutually inscribed, circumscribed tetrahedrons is called a Möbius pair. The existence of such pairs of simplexes in higher-dimensional (odd) projective spaces is already established. In the present study an existence of an infinite chain of simplexes in a five-dimensional projective space is established where any two simplexes from the chain form a Möbius pair in some order of their vertices. This is studied with the help of powers of a block Toeplitz matrix. Also, attempt has been made to generalize this result to 2 n  + 1-dimensional projective space.

Keywords: block toeplitz; space; toeplitz matrix; projective space; dimensional projective; study

Journal Title: Arnold Mathematical Journal
Year Published: 2020

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