Graphs with small asymmetries
Jaroslav Nešetřil (1970)
Commentationes Mathematicae Universitatis Carolinae
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Jaroslav Nešetřil (1970)
Commentationes Mathematicae Universitatis Carolinae
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Svatopluk Poljak, Daniel Turzík (1978)
Commentationes Mathematicae Universitatis Carolinae
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Anton Kundrík (1990)
Mathematica Slovaca
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Bohdan Zelinka (1999)
Mathematica Bohemica
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A theorem is proved which implies affirmative answers to the problems of E. Prisner. One problem is whether there are cycles of the line graph operator with period other than 1, the other whether there are cycles of the 4-edge graph operator with period greater than 2. Then a similar theorem follows.
V. Bhave (1979)
Fundamenta Mathematicae
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