Tricotyledon theory of system design explained

In systems engineering, the tricotyledon theory of system design (T3SD) is a mathematical theory of system design developed by A. Wayne Wymore.^[1] T3SD consists of a language for describing systems and requirements, which is based on set theory, a mathematical systems model based on port automata, and a precise definition of the different types of system requirements and relationships between requirements.

System requirements model

• I/O requirement
• Performance requirement
• System test requirement
• Cost requirement
• Tradeoff requirement

System design

• Based on set theory
• Transition systems
• Functional system design
• Buildable system design

Notes and References

1. Book: Wymore, A. Wayne. A. Wayne Wymore

   . A. Wayne Wymore. Model-Based Systems Engineering. CRC Press, Inc.. 1993. 084938012X.