@misc{Maciuk_Arkadiusz_Vortices_2016,
 author={Maciuk, Arkadiusz and Smoluk, Antoni},
 identifier={DOI: 10.15611/me.2016.12.05},
 year={2016},
 rights={Pewne prawa zastrzeżone na rzecz Autorów i Wydawcy},
 description={Mathematical Economics, 2016, Nr 12 (19), s. 53-59},
 publisher={Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu},
 language={eng},
 abstract={The vortex motion is a sign of the desire to achieve balance. In the study, vortices described by complex numbers are moved from a sphere into a “squeezed” sphere – where the pair of opposite poles become one – called a pinched sphere or concave disk. Vortices on the pinched sphere reflect what is commonly observed in nature. A family of the pinched spheres very well represents the spatial vortices observed daily in gusts of wind. Stock market zigzags constitute an economic vortex – a spiral on the cone whose equivalent is the pinched sphere},
 title={Vortices on a pinched sphere},
 type={artykuł},
 keywords={pinched sphere – concave disk, vortex, complex number},
}