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(This page was established October 18, 2019 - last modified January 5, 2020)

I. Recent article on mathematical basis of low-distortion projections by Rollins/Meyer. Understand - X/Y/Z coordinates (Earth-centered or Topo-centered) are foundational but subordinate uses of map projection coordinates and their improvements will be around for a long time. (Posted October 18, 2019).

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