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  <title>Green&#39;s Open Problem 47 — qed.bot</title>
  <subtitle>Claims, announcements and changes recorded against Green&#39;s Open Problem 47.</subtitle>
  <link href="https://qed.bot/feeds/s/green-47.xml" rel="self"/>
  <link href="https://qed.bot/s/green-47"/>
  <id>https://qed.bot/feeds/s/green-47.xml</id>
  <updated>2026-09-28T11:57:19Z</updated>
  <author><name>qed.bot</name></author>
  <entry>
    <title>Formal status changed: Green&#39;s Open Problem 47</title>
    <link href="https://qed.bot/s/green-47"/>
    <id>urn:qed:change:formal-status:green:47:mixed</id>
    <updated>2026-09-28T11:57:19Z</updated>
    <summary>The formal record now marks Green&#39;s Open Problem 47 as mixed, previously open.</summary>
  </entry>
  <entry>
    <title>Fidelity regraded: Green&#39;s Open Problem 47</title>
    <link href="https://qed.bot/s/green-47"/>
    <id>urn:qed:change:fidelity:green:47:F2</id>
    <updated>2026-09-28T11:57:19Z</updated>
    <summary>The fidelity grade for Green&#39;s Open Problem 47 moved from F0 to F2.</summary>
  </entry>
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