# Richard Ehrenborg

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Richard_Ehrenborg
> Markdown URL: https://mediated.wiki/source/Richard_Ehrenborg.md
> Source: https://en.wikipedia.org/wiki/Richard_Ehrenborg
> Source revision: 1342297471
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

For the Swedish politician, see [Richard Ehrenborg (politician)](/source/Richard_Ehrenborg_(politician)).

**Richard Ehrenborg** is a Swedish mathematician working in [algebraic combinatorics](/source/Algebraic_combinatorics).[1] He is known for developing the [quasisymmetric function](/source/Quasisymmetric_function) of a poset.[2] He currently holds the Ralph E. and Norma L. Edwards Research Professorship at the University of Kentucky [3] and is the first recipient of the Royster Research Professor at [University of Kentucky](/source/University_of_Kentucky).[4]

Ehrenborg earned his Ph.D. from [MIT](/source/MIT) in 1993[5] under the supervision of [Gian-Carlo Rota](/source/Gian-Carlo_Rota). He is a descendant of another [Richard Ehrenborg](/source/Richard_Ehrenborg_(jurist)),[3] (born 1655) who was a professor and Rektor of [Lund University](/source/Lund_University). He is also a juggler and magician.[6]

## Selected publications

- Ehrenborg, Richard (1996). "On posets and Hopf algebras". *[Advances in Mathematics](/source/Advances_in_Mathematics)*. **119** (1): 1–25. [doi:10.1006/aima.1996.0026](https://doi.org/10.1006/aima.1996.0026). [ISSN 0001-8708](https://www.worldcat.org/issn/0001-8708). MR 1383883.
- Ehrenborg, Richard & Skinner, Chris M (1995). "The blind bartender's problem". *[Journal of Combinatorial Theory](/source/Journal_of_Combinatorial_Theory), Series A*. **70** (2): 249–266. [doi:10.1016/0097-3165(95)90092-6](https://doi.org/10.1016/0097-3165(95)90092-6). [ISSN 0097-3165](https://www.worldcat.org/issn/0097-3165). MR 1329391.

## See also

- [Four glasses puzzle](/source/Four_glasses_puzzle)

## External links

- ["Richard Ehrenborg's Homepage"](http://www.math.uky.edu/~jrge). Retrieved September 27, 2019.

## References

1. ["Richard Ehrenborg profile page at IAS"](https://www.ias.edu/scholars/richard-ehrenborg). Retrieved September 27, 2019.

1. Ehrenborg, Richard (1996). "On posets and Hopf algebras". *[Advances in Mathematics](/source/Advances_in_Mathematics)*. **119** (1): 1–25. [doi:10.1006/aima.1996.0026](https://doi.org/10.1006/aima.1996.0026). [ISSN 0001-8708](https://www.worldcat.org/issn/0001-8708). MR 1383883.

1. Allen, Jennifer T. ["Mathematics Names New Royster, Edwards Chairs - Mathematics"](https://math.as.uky.edu/mathematics-names-new-royster-edwards-chairs-0). *University of Kentucky Mathematics Department*. Retrieved September 27, 2019.

1. ["Faculty News"](https://www.as.uky.edu/sites/default/files/a2.pdf). *University of Kentucky Mathematics Department newsletter*. Fall 2006. Retrieved September 27, 2019.

1. ["Department of Mathematics to present distinguished researcher Richard Ehrenborg"](http://www.marshall.edu/wamnewsletter/2016/10/department-of-mathematics-to-present-distinguished-reasearcher-richard-ehrenborg/). *Marshall University newsletter*. Retrieved September 27, 2019.

---
Adapted from the Wikipedia article [Richard Ehrenborg](https://en.wikipedia.org/wiki/Richard_Ehrenborg) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Richard_Ehrenborg?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.