Euclidian heterogeneity
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Abstract
One can speak of expressive heterogeneity when a demonstration appeals (in its communication) to linguistic and visual resources. One can speak of inferential heterogeneity when such an appeal is essential (inferentially) for the demonstrative plot. A paradigmatic example of inferential heterogeneity is the Euclidean proof. This paper aims to draw attention to four ways of intervening the diagram in such argumentative structures: contributing to the application of inferential schemes or strategies, guiding the heterogeneous demonstrative sequence, intervening in the "decomposition of logical space" (Netz 1999), contributing to the reduction of alternatives to consider. In each of these modalities, the diagram participates in a singular way as an expressive resource and as an inferential device.
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