olemus
kahe lineaarteisenduse jagatis
= quotient of two linear transformations

näide
Möbiuse teisendus \(f(z) = \frac{az + b}{cz + d}\) ,
kus \(a, b, c, d\) on reaalarvud ja
determinant \(ad - bc \) ei ole null

ülevaateid
https://mathworld.wolfram.com/LinearFractionalTransformation.html

https://en.wikipedia.org/wiki/Linear_fractional_transformation

https://math.libretexts.org/Bookshelves/Analysis/Book%3A_Complex_Variables_with_Applications_(Orloff)/11%3A_Conformal_Transformations/11.07%3A_Fractional_Linear_Transformations

https://encyclopediaofmath.org/wiki/Fractional-linear_mapping

rakendusi
https://www.mdpi.com/2073-8994/12/5/826/htm

https://www.atlantis-press.com/article/25860815.pdf