Later in the 1970s he focussed his work on the field of computer graphics and image processing, and in the 1990s on diagrammatic representation and reasoning. In In 2006 he obtained his D.Sc. in ...

Earlier this month the Mathematics Institute at Uppsala University hosted a conference called Categorification in Algebra and Topology, clearly a theme close to our collective heart. As yet there are ...

(2021) Circular Reasoning: Shifting epistemological frames across mathematics and coding activities ... Modeling and Meta-Modeling in Elementary Science Learning: Physical, Diagrammatic, and ...