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Items where Author is "Sangwine, Stephen J"

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Number of items: 14.

Article

Sangwine, Stephen J and Hitzer, Eckhard (2020) Polar decomposition of complexified quaternions and octonions. Advances in Applied Clifford Algebras, 30 (2). DOI https://doi.org/10.1007/s00006-020-1048-y

Yasmin, Shagufta and Sangwine, Stephen J (2018) Multi-directional colour edge detector using linear quaternion system convolution. IET Image Processing, 12 (7). pp. 1111-1116. DOI https://doi.org/10.1049/iet-ipr.2017.0921

Sangwine, Stephen J and Hitzer, Eckhard (2017) Clifford Multivector Toolbox (for MATLAB). Advances in Applied Clifford Algebras, 27 (1). pp. 539-558. DOI https://doi.org/10.1007/s00006-016-0666-x

Sangwine, Stephen J (2017) On harmonic analysis of vector-valued signals. Mathematical Methods in the Applied Sciences, 40 (1). pp. 22-30. DOI https://doi.org/10.1002/mma.3938

Sangwine, Stephen J (2015) Comments on ‘A structure-preserving method for the quaternion LU decomposition in quaternionic quantum theory’ by Minghui Wang and Wenhao Ma. Computer Physics Communications, 188. pp. 128-130. DOI https://doi.org/10.1016/j.cpc.2014.11.016

Le Bihan, Nicolas and Sangwine, Stephen J and Ell, Todd A (2014) Instantaneous frequency and amplitude of orthocomplex modulated signals based on quaternion Fourier transform. Signal Processing, 94 (1). pp. 308-318. DOI https://doi.org/10.1016/j.sigpro.2013.06.028

Sangwine, Stephen J and Ell, Todd A (2012) Complex and hypercomplex discrete Fourier transforms based on matrix exponential form of Euler’s formula. Applied Mathematics and Computation, 219 (2). pp. 644-655. DOI https://doi.org/10.1016/j.amc.2012.06.055

Sangwine, Stephen J and Ell, Todd A and Le Bihan, Nicolas (2011) Fundamental Representations and Algebraic Properties of Biquaternions or Complexified Quaternions. Advances in Applied Clifford Algebras, 21 (3). pp. 607-636. DOI https://doi.org/10.1007/s00006-010-0263-3

Sangwine, Stephen J and Alfsmann, Daniel (2010) Determination of the Biquaternion Divisors of Zero, Including the Idempotents and Nilpotents. Advances in Applied Clifford Algebras, 20 (2). pp. 401-410. DOI https://doi.org/10.1007/s00006-010-0202-3

Sangwine, Stephen J and Bihan, Nicolas Le (2010) Quaternion Polar Representation with a Complex Modulus and Complex Argument Inspired by the Cayley-Dickson Form. Advances in Applied Clifford Algebras, 20 (1). pp. 111-120. DOI https://doi.org/10.1007/s00006-008-0128-1

Ell, Todd A and Sangwine, Stephen J (2007) Quaternion involutions and anti-involutions. Computers & Mathematics with Applications, 53 (1). pp. 137-143. DOI https://doi.org/10.1016/j.camwa.2006.10.029

Monograph

Sangwine, Stephen J (2015) Octonion associators. Working Paper. arXiv. (Unpublished)

Conference or Workshop Item

Bihan, Nicolas Le and Sangwine, Stephen J (2013) Quaternionic Spectral Analysis of Non-Stationary Improper Complex Signals. In: UNSPECIFIED, ? - ?.

Book

Ell, Todd A and Bihan, Nicolas Le and Sangwine, Stephen J (2014) Quaternion Fourier Transforms for Signal and Image Processing. Wiley, pp. 1-136. ISBN 9781848214781.

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