J4 ›› 2013, Vol. 48 ›› Issue (2): 15-19.
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CHENG Zhi1,2, SUN Cui-fang2, WANG Ning1, DU Xian-neng1
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Abstract:
The fibre product of Zn in the category of Zmodules is described with the methods of algebra and number theory. The results also apply a way to construct the equalities of Euler function φ(n).
Key words: fibre product; Euler function; Abelian group
CHENG Zhi1,2, SUN Cui-fang2, WANG Ning1, DU Xian-neng1. On the fibre product of Zn and its property[J].J4, 2013, 48(2): 15-19.
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