From bad2736668d7ddd93e9c98bc287f530ca1cf85cc Mon Sep 17 00:00:00 2001 From: Astrid Giuliani Date: Tue, 9 Jul 2024 19:15:11 +0200 Subject: [PATCH] fix index.md --- docs/src/index.md | 39 +++++++++++++++++++-------------------- 1 file changed, 19 insertions(+), 20 deletions(-) diff --git a/docs/src/index.md b/docs/src/index.md index df0973a..06a867c 100644 --- a/docs/src/index.md +++ b/docs/src/index.md @@ -1,30 +1,29 @@ # The averaged Kepler problem -``` + We consider the Hamiltonian -$$ - H(r, \theta, p_r, p_\theta) = v p_\theta + \Vert p \Vert_{g} -$$ +`` + H(r, \\theta, p_r, p_\\theta) = v p_\\theta + \\Vert p \\Vert_{g} +`` -where $v$ is a constant, $p = (p_r, p_\theta)$, and $\Vert \cdot \Vert_{g}$ is the norm induced by the metric +where ``v`` is a constant, ``p = (p_r, p_\\theta)``, and ``\\Vert \\cdot \\Vert_{g}`` is the norm induced by the metric -$$ - g = \mathrm{d}r^2 + m_\lambda^2(r)\, \mathrm{d}\theta^2, \quad - m_\lambda^2(r) = \frac{\sin^2 r}{1 - \lambda \sin^2 r} -$$ +`` + g = \\mathrm{d}r^2 + m_\\lambda^2(r)\\, \\mathrm{d}\\theta^2, \\quad + m_\\lambda^2(r) = \\frac{\\sin^2 r}{1 - \\lambda \\sin^2 r} +`` -with $\lambda = 4/5$. +with ``\\lambda = 4/5``. -Along the geodesics, we have $H+p^0 = 0$. The parameter $p^0$ is constant equal to $-1$ (hyperbolic), $0$ (abnormal) or $1$ (elliptic). +Along the geodesics, we have ``H+p^0 = 0``. The parameter ``p^0`` is constant equal to ``-1`` (hyperbolic), ``0`` (abnormal) or ``1`` (elliptic). -**Remark.** We can parameterize the geodesics by the norm of the initial convector, setting $\Vert{p_0}\Vert_g = 1$. -This amounts to parameterize by the initial angle $\alpha_0$: -$$ - p_r = \sin \alpha_0, \quad p_\theta = m_\lambda(r) \cos \alpha_0. -$$ +**Remark.** We can parameterize the geodesics by the norm of the initial convector, setting ``\\Vert{p_0}\\Vert_g = 1``. +This amounts to parameterize by the initial angle ``\\alpha_0``: +`` + p_r = \\sin \\alpha_0, \\quad p_\\theta = m_\\lambda(r) \\cos \\alpha_0. +`` In that case, the hyperbolic geodeics are given by -$$ - p_\theta\, v + 1 = v\, m_\lambda(r) \cos \alpha_0 + 1 > 0. -$$ -``` \ No newline at end of file +`` + p_\\theta\\, v + 1 = v\\, m_\\lambda(r) \\cos \\alpha_0 + 1 > 0. +`` \ No newline at end of file