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IJAC
2011
9 years 4 months ago
Bass Cyclic Units as Factors in a Free Group in Integral Group Ring Units
Marciniak and Sehgal showed that if u is a non-trivial bicyclic unit of an integral group ring then there is a bicyclic unit v such that u and v generate a non-abelian free group. ...
Jairo Z. Gonçalves, Ángel del R&iacu...
IJAC
2011
9 years 4 months ago
The Subword Reversing Method
We summarize the main known results involving subword reversing, a method of semigroup theory for constructing van Kampen diagrams by referring to a preferred direction. In good ca...
Patrick Dehornoy
IJAC
2011
9 years 8 months ago
Bringing the Everyday Life into Engineering Education
— To successfully design and engineer solutions for today’s and tomorrow’s rapidly changing and expanding global contexts, in which people are confronted with new opportuniti...
Gert Pasman, Ingrid Mulder
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