Conic Sections and Meet Intersections in Geometric Algebra. - Eckhard M. S. Hitzer (IWMM/GIAE, 2004)

Optimal Learning Rates for Clifford Neurons. - Sven Buchholz 001; Kanta Tachibana; Eckhard M. S. Hitzer (ICANN (1), 2007)

Clifford Algebra Cl3, 0-Valued Wavelet Transformation, Clifford Wavelet Uncertainty inequality and Clifford Gabor Wavelets. - Mawardi Bahri; Eckhard S. M. Hitzer (Int. J. Wavelets Multiresolution Inf. Process., 2007)

Analysis of Point Clouds - Using Conformal Geometric Algebra. - Dietmar Hildenbrand; Eckhard M. S. Hitzer (GRAPP, 2008)

Feature extractions with geometric algebra for classification of objects. - Minh Tuan Pham; Kanta Tachibana; Eckhard M. S. Hitzer; Sven Buchholz 001; Tomohiro Yoshikawa; Takeshi Furuhashi (IJCNN, 2008)

An uncertainty principle for quaternion Fourier transform. - Mawardi Bahri; Eckhard S. M. Hitzer; Akihisa Hayashi; Ryuichi Ashino (Comput. Math. Appl., 2008)

Two-Dimensional Clifford Windowed Fourier Transform. - Mawardi Bahri; Eckhard S. M. Hitzer; Sriwulan Adji (Geometric Algebra Computing, 2010)

Interactive 3D Space Group Visualization with CLUCalc and Crystallographic Subperiodic Groups in Geometric Algebra. - Eckhard M. S. Hitzer; Christian Perwass; Daisuke Ichikawa (Geometric Algebra Computing, 2010)

Classification and Clustering of Spatial Patterns with Geometric Algebra. - Minh Tuan Pham; Kanta Tachibana; Eckhard M. S. Hitzer; Tomohiro Yoshikawa; Takeshi Furuhashi (Geometric Algebra Computing, 2010)

Windowed Fourier transform of two-dimensional quaternionic signals. - Mawardi Bahri; Eckhard S. M. Hitzer; Ryuichi Ashino; Rémi Vaillancourt (Appl. Math. Comput., 2010)

Detection of Outer Rotations on 3D-Vector Fields with Iterative Geometric Correlation and its Efficiency. - Roxana Bujack; Gerik Scheuermann; Eckhard Hitzer (CoRR, 2013)

KamiWaAi - Interactive 3D Sketching with Java Based on Cl(4, 1) Conformal Model of Euclidean Space. - Eckhard Hitzer (CoRR, 2013)

Geometric operations implemented by conformal geometric algebra neural nodes. - Eckhard Hitzer (CoRR, 2013)

Non-constant bounded holomorphic functions of hyperbolic numbers - Candidates for hyperbolic activation functions. - Eckhard Hitzer (CoRR, 2013)

Algebraic foundations of split hypercomplex nonlinear adaptive filtering. - Eckhard Hitzer (CoRR, 2013)

Quaternion Fourier Transform on Quaternion Fields and Generalizations. - Eckhard Hitzer (CoRR, 2013)

New Views of Crystal Symmetry. - Eckhard Hitzer (CoRR, 2013)

OPS-QFTs: A new type of quaternion Fourier transforms based on the orthogonal planes split with one or two general pure quaternions. - Eckhard Hitzer (CoRR, 2013)

Quaternionic Fourier-Mellin Transform. - Eckhard Hitzer (CoRR, 2013)

Clifford Fourier-Mellin transform with two real square roots of -1 in Cl(p, q), p+q=2. - Eckhard Hitzer (CoRR, 2013)

New views of crystal symmetry guided by profound admiration of the extraordinary works of Grassmann and Clifford. - Eckhard Hitzer (CoRR, 2013)

The Orthogonal 2D Planes Split of Quaternions and Steerable Quaternion Fourier Transformations. - Eckhard Hitzer; Stephen J. Sangwine (CoRR, 2013)

Applications of Clifford's Geometric Algebra - Eckhard Hitzer; Tohru Nitta; Yasuaki Kuroe (CoRR, 2013)

Moment Invariants for 2D Flow Fields Using Normalization. - Roxana Bujack; Ingrid Hotz; Gerik Scheuermann; Eckhard Hitzer (PacificVis, 2014)

Customized TRS invariants for 2D vector fields via moment normalization. - Roxana Bujack; Mario Hlawitschka; Gerik Scheuermann; Eckhard Hitzer (Pattern Recognit. Lett., 2014)

Moment invariants for 3D flow fields via normalization. - Roxana Bujack; Jens Kasten; Ingrid Hotz; Gerik Scheuermann; Eckhard Hitzer (PacificVis, 2015)

Moment Invariants for 2D Flow Fields via Normalization in Detail. - Roxana Bujack; Ingrid Hotz; Gerik Scheuermann; Eckhard Hitzer (IEEE Trans. Vis. Comput. Graph., 2015)

Double Conformal Geometric Algebra for Quadrics and Darboux Cyclides. - Robert Benjamin Easter; Eckhard Hitzer (CGI (Short Papers), 2016)

Multivector and multivector matrix inverses in real Clifford algebras. - Eckhard Hitzer; Stephen J. Sangwine (Appl. Math. Comput., 2017)

Cubic Curves and Cubic Surfaces from Contact Points in Conformal Geometric Algebra. - Eckhard Hitzer; Dietmar Hildenbrand (CGI, 2019)

Strip adjustment of airborne laserscanning data with conformal geometric algebra. - Eckhard Hitzer; Werner Benger; Manfred Niederwieser; Ramona Baran; Frank Steinbacher (SCIS/ISIS, 2020)

Special Affine Fourier Transform for Space-Time Algebra Signals. - Eckhard Hitzer (CGI, 2021)

Embedding of Octonion Fourier Transform in Geometric Algebra of $ mathbb {R}^3$ and Polar Representations of Octonion Analytic Signals. - Eckhard Hitzer (ENGAGE, 2022)

Quadratic Phase Quaternion Domain Fourier Transform. - Eckhard Hitzer (CGI (4), 2023)

Properties of the Geometric Product of Two Oriented Points in Conformal Geometric Algebra$^ star $. - Eckhard Hitzer (CGI (3), 2024)

Hypercomplex Signal and Image Processing: Part 1 [From the Guest Editors]. - Nektarios A. Valous; Eckhard Hitzer; Salvatore Vitabile; Swanhild Bernstein; Carlile Lavor; Derek Abbott; Maria Elena Luna-Elizarrarás; Wilder Bezerra Lopes (IEEE Signal Process. Mag., 2024)

Hypercomplex Signal and Image Processing: Part 2 [From the Guest Editors]. - Nektarios A. Valous; Eckhard Hitzer; Salvatore Vitabile; Swanhild Bernstein; Carlile Lavor; Derek Abbott; Maria Elena Luna-Elizarrarás; Wilder Bezerra Lopes (IEEE Signal Process. Mag., 2024)

Novel computational workflows for natural and biomedical image processing based on hypercomplex algebras. - Nektarios A. Valous; Eckhard Hitzer; Dragos Duse; Rodrigo Rojas-Moraleda; Ferdinand Popp; Meggy Suarez-Carmona; Anna Berthel; Ismini Papageorgiou; Carlo Fremd; Alexander Rölle; Christina C. Westhoff; Bénédicte Lenoir; et al. (CoRR, 2025)