# Robert Ammann

> American mathematician (*1946 – †1994)

**Wikidata**: [Q7341497](https://www.wikidata.org/wiki/Q7341497)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Robert_Ammann)  
**Source**: https://4ort.xyz/entity/robert-ammann

Here’s the structured biographical entry for Robert Ammann:

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## Summary  
Robert Ammann was an American mathematician and programmer known for his contributions to aperiodic tilings and quasicrystals. His work laid foundational principles in mathematical tiling theory, influencing both theoretical mathematics and materials science.

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## Biography  
- Born: October 1, 1946  
- Nationality: United States  
- Education: Brandeis University  
- Known for: Discoveries in aperiodic tilings  
- Employer(s): Honeywell International, Inc.  
- Field(s): Mathematics, computer programming  

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## Contributions  
Robert Ammann made groundbreaking contributions to the study of aperiodic tilings, a field that explores non-repeating geometric patterns. His most notable work includes the discovery of the Ammann bars (a method for analyzing aperiodic tilings) and the Ammann–Beenker tiling, an eightfold symmetric quasicrystal pattern. These discoveries, made in the 1970s and 1980s, provided critical insights into the mathematical structure of quasicrystals, later earning him recognition alongside Nobel Prize-winning physicist Dan Shechtman. Ammann's work bridged abstract mathematics and materials science, influencing later research in crystallography and computational geometry.  

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## FAQs  
### Q: What is Robert Ammann best known for?  
A: Ammann is best known for his discoveries in aperiodic tilings, including the Ammann bars and the Ammann–Beenker tiling, which advanced the understanding of quasicrystals.  

### Q: Where did Robert Ammann study?  
A: He studied at Brandeis University, though specific degrees are not documented in the available source material.  

### Q: Did Robert Ammann collaborate with other notable scientists?  
A: While direct collaborations are not detailed here, his work on quasicrystals intersected with the research of Nobel laureate Dan Shechtman.  

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## Why They Matter  
Robert Ammann's work revolutionized the study of non-periodic patterns in mathematics and materials science. His discoveries provided the theoretical framework for quasicrystals, a new class of materials with unique physical properties. Without his contributions, the understanding of aperiodic structures in nature and synthetic materials would be significantly delayed. His influence persists in fields ranging from pure mathematics to engineering applications.  

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## Notable For  
- Discovery of Ammann bars and the Ammann–Beenker tiling.  
- Pioneering research in aperiodic tilings and quasicrystals.  
- Erdős number of 2, indicating close proximity to influential mathematicians.  

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## Body  
### Early Life and Education  
- Born on October 1, 1946, in the United States.  
- Educated at Brandeis University, though degree specifics are unrecorded.  

### Career and Discoveries  
- Employed at Honeywell International, Inc.  
- Developed Ammann bars, a tool for analyzing aperiodic tilings.  
- Created the Ammann–Beenker tiling, an eightfold symmetric pattern.  

### Legacy  
- Work influenced Nobel Prize-winning research on quasicrystals.  
- Contributions remain foundational in mathematical tiling theory.  

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