# Larry Wos

> American mathematician

**Wikidata**: [Q6491315](https://www.wikidata.org/wiki/Q6491315)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Larry_Wos)  
**Source**: https://4ort.xyz/entity/larry-wos

## Summary
Larry Wos was an American mathematician and computer scientist renowned for his pioneering work in automated theorem proving. A recipient of the prestigious Herbrand Award (1992), he developed foundational tools and techniques in artificial intelligence and mathematical logic, significantly advancing the field of automated reasoning.

## Biography
- **Born**: July 13, 1930, in Chicago, United States  
- **Nationality**: United States  
- **Education**: University of Chicago, University of Illinois Urbana–Champaign  
- **Known for**: Contributions to automated theorem proving and the development of the OTTER prover  
- **Employer(s)**: Argonne National Laboratory, University of Illinois Urbana–Champaign  
- **Field(s)**: Mathematics, computer science  

## Contributions
Larry Wos made seminal contributions to automated theorem proving, a cornerstone of artificial intelligence and formal methods. He co-developed the **OTTER** automated theorem prover, a powerful tool for solving complex mathematical problems. In 1996, OTTER famously resolved the **Robbins conjecture**, a problem in Boolean algebra that had gone unsolved for over 60 years. Wos authored numerous papers on automated reasoning and co-authored the book *Automated Theorem Proving in Quine's Set Theory* (1992). His work demonstrated the practicality of machine-driven proof discovery, influencing fields from software verification to cognitive science. Wos also contributed to the development of the **Prover9** and **Mace4** systems, further expanding the toolkit for automated reasoning.

## FAQs
### Q: What is Larry Wos best known for?
A: Larry Wos is best known for his pioneering work in automated theorem proving, particularly the development of the OTTER prover, which solved the Robbins conjecture in 1996 after 60 years of effort by mathematicians.

### Q: What award did Larry Wos receive in 1992?
A: Wos received the **Herbrand Award** in 1992, recognizing his outstanding contributions to automated reasoning.

### Q: Where did Larry Wos work?
A: Wos was affiliated with **Argonne National Laboratory** and the **University of Illinois Urbana–Champaign**, where he conducted much of his groundbreaking research.

## Why They Matter
Larry Wos transformed the field of automated reasoning by creating practical tools like OTTER, which solved historically intractable problems such as the Robbins conjecture. His work bridged theoretical mathematics and computer science, enabling machines to independently discover proofs and driving advancements in AI, formal verification, and logic. Without Wos’s innovations, the integration of automated theorem proving into modern software development and mathematical research would be far less advanced.

## Notable For
- Recipient of the **Herbrand Award** (1992)  
- Co-developer of the **OTTER** automated theorem prover  
- Key role in solving the **Robbins conjecture** (1996)  
- Affiliations with **Argonne National Laboratory** and the **University of Illinois Urbana–Champaign**  

## Body
### Early Life and Education
Larry Wos was born on July 13, 1930, in Chicago, Illinois. He pursued his education at the **University of Chicago** and the **University of Illinois Urbana–Champaign**, laying the foundation for his career in mathematics and computer science.

### Career
Wos spent his career at **Argonne National Laboratory** and the **University of Illinois Urbana–Champaign**, where he focused on automated reasoning. He collaborated with prominent researchers, including his doctoral advisor **Reinhold Baer**, and mentored generations of logicians and computer scientists.

### Research and Contributions
Wos’s research centered on **automated theorem proving**, a field he helped establish as a practical discipline. His development of **OTTER** revolutionized the ability of computers to solve complex logical problems. OTTER’s 1996 proof of the **Robbins conjecture**—a result verified in just 8 days after decades of human effort—highlighted the power of automated reasoning. Wos also contributed to **Prover9** and **Mace4**, tools widely used in academia and industry for formal verification and mathematical exploration.

### Awards and Recognition
- **Herbrand Award** (1992): Honored by the Association for Automated Reasoning for his seminal contributions to the field.  
- **Mathematics Genealogy Project ID**: 3951, reflecting his academic lineage and influence.  

### Death and Legacy
Larry Wos died on August 21, 2020, leaving behind a legacy of tools and methodologies that continue to shape automated reasoning. His work remains integral to AI research, software reliability, and mathematical proof discovery, ensuring his impact endures in both theoretical and applied computing.

## References

1. BnF authorities
2. IdRef
3. data.bibliotheken.nl
4. Integrated Authority File
5. Virtual International Authority File
6. Mathematics Genealogy Project
7. general catalog of BnF
8. CiNii Research
9. National Library of Israel Names and Subjects Authority File