Browsing NTNU Open by Author "Winger, Marius Lie"
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A categorical approach to Cuntz-Pimsner C*-algebras
Winger, Marius Lie (Master thesis, 2015)Using a $C^*$-algebra $A$, a Hilbert $A$-module $E$ and a $C^*$-correspondence $(E,\phi_E)$ we use the language of category theory to construct $\mathcalO_{(E,\phi_E)}(J)$, the Cuntz-Pimsner representation relative to an ... -
Characterisation of fraction representation transformations of Norwegian preservice teachers
Winger, Marius Lie; Solstad, Trygve; Kaspersen, Eivind (Chapter, 2022)Learning to use a diverse set of representations to support teaching and understanding is an important and integrated part of Norwegian mathematics teacher education. This study uses a thematic analysis and Duval’s theory ... -
Using the Rasch Model to Measure Comprehension of Fraction Addition
Winger, Marius Lie; Gausen, Julie; Kaspersen, Eivind; Solstad, Trygve (Peer reviewed; Journal article, 2020)In this study we investigate whether transformations between different representations of mathematical objects constitute a suitable framework for the assessment of students’ comprehension of fraction addition. Participants ...