@article{Galecka_2021, title={A Proof of the Hurwit’z Theorem About Composition Algebras}, volume={13}, url={https://didacticammath.up.krakow.pl/article/view/9167}, DOI={10.24917/20809751.13.4}, abstractNote={<p>We present a proof of the Hurwitz Theorem about construction and properties of real numbers, complex numbers, quaternions and octonions. In the proof we use the Dickson double for Cayley-Dickson algebras.</p>}, journal={Annales Universitatis Paedagogicae Cracoviensis | Studia ad Didacticam Mathematicae Pertinentia}, author={Galecka, Aleksandra}, year={2021}, month={Dec.}, pages={101–114} }