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On the regular elements in Zn
Regular elements Eular's phi-function von Neumann regular rings
2010/2/25
All rings are assumed to be finite commutative with identity element. An element a \in R is called a regular element if there exists b \in R such that a=a2b, the element b is called a von Neumann inve...
Tangent Lines of Generalized Regular Curves Parametrized by Time Scales
Time scale delta derivative generalized regular curve tangent line
2010/3/1
In this paper a generalization of the notion of regular curve is introduced. For such curves the concept of tangent line is investigated.