EasterSunday (Calendar Package Symbol)

EasterSunday[year] gives the date of Easter Sunday in the Gregorian calendar system.

Friday (Calendar Package Symbol)

Friday is a day of the week.

Monday (Calendar Package Symbol)

Monday is a day of the week.

Saturday (Calendar Package Symbol)

Saturday is a day of the week.

Sunday (Calendar Package Symbol)

Sunday is a day of the week.

Thursday (Calendar Package Symbol)

Thursday is a day of the week.

Tuesday (Calendar Package Symbol)

Tuesday is a day of the week.

Wednesday (Calendar Package Symbol)

Wednesday is a day of the week.

AcyclicQ (Combinatorica Package Symbol)

AcyclicQ[g] yields True if graph g is acyclic.

AddEdge (Combinatorica Package Symbol)

AddEdge[g, e] returns a graph g with the new edge e added. e can have the form {a, b} or the form {{a, b}, options}.