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The cognitive theory of true conditions (CTTC) is a proposal to describe themodel-theoretic semantics of symbolic cognitive architectures and design theimplementation of cognitive abilities. The CTTC is formulated mathematicallyusing the multi-optional many-sorted past present future(MMPPF) structures.This article defines mathematically the MMPPF structures and the formallanguages proposed to describe them by the CTTC.

Multi-optional Many-sorted Past Present Future structures and its description