Geometrical diagrams as representation and communication: a functional analytic framework.

The article presents the author's views on considering diagrams as a semiotic mode of representation and communication. He states that mathematics is a multimodal discourse which ha different modes of representation and communication. Focusing on geometry, he analyzes the kinds of meanings afforded by diagrams in mathematical discourse. He comments that he considers diagrams as a semiotic mode of representation and communication that leads to construct mathematical meaning. He argues that the author of the diagram creates an imaginary social relation with the viewer.