Abstract As a continuation of the study of cover-incomparability graphs of posets (C-I graphs), the notion of 2-colored diagrams is introduced and used in characterizations of posets whose C-I graphs ...

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From now until November, we will periodically bring you an update on the presidential race in the form of graphs and charts and diagrams, because who doesn’t like looking at that stuff? This is the ...

If your child is struggling with certain behaviors or responsibilities, help may be as simple as creating a sticker chart. Parents, particularly those of young children, have used behavior charts to ...