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HJB

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Dear Lambertch, could you please provide a page-specific reference in the Bertsekas textbook for the claim that HJB is necessary and sufficient for optimality? There was discussion in Talk:Hamilton-Jacobi-Bellman equation about whether or not HJB is only necessary or also sufficient. My hunch is that whether it is sufficient depends on whether the problem is assumed to have a finite end time. Since you didn't cite a specific page of Bertsekas, it's hard to verify whether the sufficiency claim is correct, and if so, precisely why. Thank you! --Rinconsoleao (talk) 16:18, 16 October 2008 (UTC)[reply]

ECEF ENU Longitude Latitude relationships

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You can change it yourself if you like - this is, after all, a wiki! I think I used Inkscape to draw it. Mike1024 (t/c) 23:51, 16 April 2012 (UTC)[reply]