关于微软研究院Z3 SMT求解器名称含义的技术问询

Great question! It’s totally understandable that you couldn’t find an explanation in formal papers or slides—Z3’s naming backstory is mostly shared in informal contexts from the core development team.

From comments made by Leonardo de Moura (one of Z3’s primary creators), the name Z3 doesn’t carry a specific technical, academic, or pop-culture related meaning. It started as an internal project code name at Microsoft Research, following a simple sequential naming pattern: there were earlier internal SMT solver prototypes codenamed Z and Z2, so this successor project took the next logical spot: Z3.

Once the project gained momentum and was eventually open-sourced, the team kept the casual code name instead of rebranding it to something more formal or descriptive. This is a common trend in research projects—internal code names often stick around when the tool becomes widely adopted, even if they don’t have a deep intentional meaning.

内容的提问来源于stack exchange，提问作者J. Ryan Stinnett