Work ䷷

Peirce’s 1885 “Algebra of Logic”

Peirce 1885 Sign Object Mind

PNG

Peirce 1885 Sign Object Mind

LaTeX

\begin{array}{lll} \text{sign} & & \text{object} \\ \text{sign} & & \text{mind} \\ \text{object} & & \text{mind} \end{array}