## Sign Relations • Comment 1

Peirce’s triadic sign relations are sets of ordered triples having the form $(o, s, i),$ where $o$ is the object, $s$ is the sign, and $i$ is the interpretant sign (usually shortened to interpretant).  In other words, a specific sign relation $L$ is a subset of the cartesian product $O \times S \times I,$ where $O$ is the object domain, $S$ is the sign domain, and $I$ is the interpretant domain.

There is more discussion in the following papers:

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