$R$-transforms for Sobolev $H^2$-metrics on spaces of plane curves
$R$-transforms for Sobolev $H^2$-metrics on spaces of plane curves
复制标题
平面曲线空间上 Sobolev 的 $R$-变换 $H^2$-度量
DOI:
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
P. Michor
中科院分区:
文献类型:
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作者:
Martin Bauer;Martins Bruveris;P. Michor
We consider spaces of smooth immersed plane curves (modulo translations and/or rotations), equipped with reparameterization invariant weak Riemannian metrics involving second derivatives. This includes the full $H^2$-metric without zero order terms. We find isometries (called $R$-transforms) from some of these spaces into function spaces with simpler weak Riemannian metrics, and we use this to give explicit formulas for geodesics, geodesic distances, and sectional curvatures. We also show how to utilise the isometries to compute geodesics numerically.