JournalsemVol. 81, No. 4pp. 149–155

Square donuts and twistable holes

  • Kevin Murawski

    University of Notre Dame, USA

    • Neil R. Nicholson

      University of Notre Dame, USA

    • Kathleen Walsh

      University of Notre Dame, USA
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      Kevin Murawski, Neil R. Nicholson, Kathleen Walsh, Square donuts and twistable holes. Elem. Math. 81 (2026), no. 4, pp. 149–155

      DOI 10.4171/EM/571