Interdependence, interaction and metaphor in multisemiotic texts

Systemic frameworks for discourse analysis of visual/verbal and mathematics texts are used to examine the functionality of language? visual display and mathematical symbolism, and the meaning arising from interaction and interdependence between these semiotic codes in joint constructions. The nature of the interaction between options, classified as unmarked or marked, determines the meaning made in that instance and, more generally, provides an impetus for the expansion of the meaning potential of each semiotic. The phenomenon where semantic shifts occur when functional elements are reconstrued in another semiotic is called semiotic metaphor. Rather than the notion of an overlay of meaning typically associated with grammatical metaphor, the potential exists here for more dramatic forms of semantic shift. Examples of semiotic metaphor categorised as 'parallel semiotic metaphor' and 'divergent semiotic metaphor' are given in the text analysis.