Browsing 2026 by Snapshot Mathematical Subject "Algebra and Number Theory"

Now showing items 1-3 of 3

    • Alternating sign matrix bijections: marvelous, mysterious, missing 

      [SNAP-2026-003-EN] Striker, Jessica (Mathematisches Forschungsinstitut Oberwolfach, 2026-02-24)
      A bijection transforms one type of mathematical object into another. Such transformations provide new perspectives on these objects, revealing surprising properties and uncovering new mysteries. We discuss bijections from ...

    • Secure file sharing and Cayley graphs 

      [SNAP-2026-002-EN] McKemmie, Eilidh (Mathematisches Forschungsinstitut Oberwolfach, 2026-02-23)
      Have you ever wondered how your computer knows it can trust certain downloads but not others? This snapshot describes some security concerns and one algebraic way of dealing with them. We'll see an interesting procedure ...

    • Triangulations in geometry: from Ptolemy to Teichmüller 

      [SNAP-2026-004-EN] Pressland, Matthew (Mathematisches Forschungsinstitut Oberwolfach, 2026-02-27)
      Ptolemy's theorem is a classical result from ancient Greek mathematics, concerning the lengths of sides and diagonals of a polygon drawn in a circle. In this snapshot, I will explain why this theorem is still important ...