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On curves whose arc is an elliptic integral of the first kind. - MaRDI portal

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On curves whose arc is an elliptic integral of the first kind. (Q1557526)

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scientific article; zbMATH DE number 2715464
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English
On curves whose arc is an elliptic integral of the first kind.
scientific article; zbMATH DE number 2715464

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    On curves whose arc is an elliptic integral of the first kind. (English)
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    1874
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    Eine eingehendere Behandlung desjenigen Curvengeschlechts, auf welches der Herr Verfasser im Abschnitt XI. seiner Dissertation (siehe F. d. M. II. 239, JFM 02.0239.01) aufmerksam gemacht hat. Dieses Curvengeschlecht gehört zu den Curven,deren rechtwinklige Coordinaten \(x\), \(y\) sich rational oder algebraisch durch \(pu\) und \(p'u\) ausdrücken lassen und der Gleichung \[ dx^2 + dy^2 = du^2 = \frac{dp^2}{4p^3 - g_2\; p-g_3} \] genügen. Zu ihnen gelangt man mit Hülfe der Function \[ f(u,\; v) = \frac{\sigma (u - v)}{\sigma v \cdot \sigma u} e^{wu}, \quad \left( v = \frac{2\lambda \omega + 2\mu \omega'}{n}, \quad w = \frac{2\lambda\eta + 2\mu\eta'}{n} \right), \] welche in des Verfassers Abhandlung, Borchardt J. LXXVI. 21 (siehe F. d. M. V. 259, JFM 05.0259.01) definirt wurde, indem man \[ x+iy = \varphi (u) = \sum_{\nu=1}^{r = m} \sum_{k=1}^{k=a_{\nu}} c_{k,\nu} f^{(k-1)} (u-a_{\nu}) \] setzt. Unter Benutzung der in der eben genannten Abhandlung gegebenen Formeln werden num die Curven dargestellt, welche den speciellen Fällen \(m=1\), \(\alpha_1 =1\) und \(m=1\), \(\alpha_2 = 2\) entsprechen.
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    Arc length. Elliptic integrals
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