I'm not sure however, what problems should be classified under Combinatorial Graph Theory. For your contribution about Graceful labeling I'd rather create a category Labeling (may be under Graph Theory -> Coloring ?). But if you have some content for the category, we can add it.
Anyway, thanks for the suggestion (and for the Graceful contribution).
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CSI of Charles University
Yes, we definitely plan to add more categories
I'm not sure however, what problems should be classified under Combinatorial Graph Theory. For your contribution about Graceful labeling I'd rather create a category Labeling (may be under Graph Theory -> Coloring ?). But if you have some content for the category, we can add it.
Anyway, thanks for the suggestion (and for the Graceful contribution).