It’s not actually the first time Sandra Jessen has played against Essen, as Alicia Butteriss points out. “From what I can tell she first started against Essen, for Bayer Leverkusen, on the last day of the 2018-19 Frauen Bundesliga,” writes Alicia. “It would be remiss of me not to add that she scored both of Köln’s goals when they beat Essen 2-1 near the start of this season.”
For the Poincaré half-space model in dimension 2, the metric evaluates on the coordinate tangent vectors \(\frac{\partial}{\partial x}, \frac{\partial}{\partial y} \in T_pM\) as \[g_p\!\left(\frac{\partial}{\partial x^i}\bigg|_p,\;\frac{\partial}{\partial x^j}\bigg|_p\right) = \frac{1}{y^2}\,\delta_{ij},\] i.e. the coordinate tangent vectors are orthogonal and each has length \(\frac{1}{y}\) — shrinking to zero as \(p\) approaches the boundary \(y\to 0\), which is what makes the space “infinitely large” near the boundary.
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