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are there any known examples of $k$-regular graphs that have no regular $f$-faktor, $1\le f\lt k\le 3$$1\le f\lt k;\ k\ge 3$, resp., can their existence or nonexistence be proved?
Question:
are there any known examples of $k$-regular graphs that have no regular $f$-faktor, $1\le f\lt k\le 3$, resp., can their existence or nonexistence be proved?
Question:
are there any known examples of $k$-regular graphs that have no regular $f$-faktor, $1\le f\lt k;\ k\ge 3$, resp., can their existence or nonexistence be proved?
are there any known examples of $k$-regular graphs that have no regular $f$-faktor, $1\le f\lt k\le 3$, resp., can their existence or nonexistence be proved?
