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    <title>A View from the Back of the Envelope</title>
    <link>https://e-sygoing.link/link/5289152-a-view-from-the-back-of-the-envelope</link>
    <description>About approximation and the fun it enables. Includes examples, exercises, and links to help grasp concepts such as measurement, scale and magnitude. Sections include  simplifying numbers, exponential notation, Fermi problems, using your body as a ruler, and other ways to visualize size and scale.</description>
    <pubDate>Sun, 23 Nov 2025 05:43:47 -0500</pubDate>
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    <title>Approximation and Imaging</title>
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    <description>UniversitÃ© de Pau.  Research topics, faculty, publications, meetings.</description>
    <pubDate>Mon, 03 Nov 2025 16:58:25 -0500</pubDate>
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    <title>History of Approximation Theory</title>
    <link>https://e-sygoing.link/link/5289149-history-of-approximation-theory</link>
    <description>Articles and web resources developed by Allan Pinkus and Carl de Boor.</description>
    <pubDate>Tue, 15 Jul 2025 07:51:54 -0400</pubDate>
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    <title>Approximation Theory</title>
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    <description>Lecture notes for Part III of the Mathematical Tripos by A. Shadrin, DAMTP, University of Cambridge.  (PS)</description>
    <pubDate>Sat, 03 May 2025 00:29:07 -0400</pubDate>
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    <title>NZ Approximation Theory Group</title>
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    <pubDate>Fri, 31 May 2024 22:58:13 -0400</pubDate>
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