Fig. 2. The shear of
φ ( z ) = 1 / 2 log ( ( 1 + z ) 2 / ( 1 + z 2 ) ) with
k = 1 , θ = 0 .

Kyungpook Mathematical Journal 2021;61:269~278 https://doi.org/10.5666/KMJ.2021.61.2.269

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