Geodesic
Generalizations of theorems of Magnus and Greendlinger
Čebyševskij sbornik, Tome 14 (2013) no. 3, pp. 20-33.

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We obtain the generalizations of the well-known Magnus theorem on isomorphism of groups with one defining relation and Greendlinger's theorem on isomorphism of groups with condition $C'(\frac{1}{6})$ on the groups $C(6)$; $C(4)$ and $T(4)$, $C(3)$ and $T(6)$.
Keywords: symmetrized set, defining relations, isomorphism. 
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V. N. Bezverkhniy; A. E. Ustyan. Generalizations of theorems of Magnus and Greendlinger. Čebyševskij sbornik, Tome 14 (2013) no. 3, pp. 20-33. http://geodesic.mathdoc.fr/item/CHEB_2013_14_3_a2/

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