My joint paper with Verônica Filíppovna "What is a Diagram?" was recently published in the journal Al Mukhatabat, number 54 (2025): https://www.jyb-logic.org/diagram-alm.html Our characterization is close to the following comments by Peirce that we cite on page 148: “A diagram should be as iconic as possible; that is, it should represent relationships by means of visible relations analogous to them. Icons are especially requisite for reasoning. A diagram is mainly an icon, and an icon of intelligible relations." JYB >------------------------------------------------------------------ Prof. Dr. Dr. Jean-Yves Beziau Federal University of Rio de Janeiro, Brazil https://www.philpeople.org/profiles/jean-yves-beziau
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