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We examine the relationship between the complexity of the word problem for a presentation and the complexity of the problem of determining the length of a shortest word equivalent to a given word. Our main result is that the length of the element represented by a word in a free solvable group can be determined in polynomial time. Let P = 〈X | R〉 be a group… (More)

- JACQUES LEWINO, J C Lewin
- 2010

- J C Lewin
- 2010

- F. Huidobro, J C Lewin
- Acta physiologica latino americana
- 1969

- George P. Hemstreet, Sandy West, +4 authors Glenda N Lindseth
- International journal of cancer
- 1983

- J C Lewin, P A Sybinsky
- JAMA
- 1993

Much national debate centers around national models in which an employer mandate plays an important role in providing for health care coverage for all Americans. Hawaii has had the nation's only health insurance employer mandate for almost 20 years, yet little is known nationally about the mandate itself or Hawaii's experience with it. This article… (More)

- J C Lewin
- 2010

The results of part I of this paper are applied to show that if F is a free algebra over the field K and W is a subset of F which is algebraically independent modulo the commutator ideal [F, F\ then W again generates a free algebra. On the way a similar theorem is proved for algebras that are free in the variety of /(-algebras whose commutator ideal is… (More)

- J C Lewin, P A Sybinsky
- Health affairs
- 1994

- J C Lewin, P A Sybinsky
- Health affairs
- 1994

- J C Lewin, Gloria Bunch, R K Seehusen
- The Western journal of medicine
- 1999