Shithead (card game) the pile must then play another card after. . After a player has no more cards in their hand, and the deck is empty, they need to continue to play from their three "face-up cards" onto the play pile. They can't play from this set of cards until they have finished with their hand and they must lay one of the face up cards (you can not lay two or more unless previously stacked) on the pile. Following the rule, the value of the face-up card must be higher than the value of the card on the top of the
Partition of a set into the connected components of the subgraph formed by the given set of edges. In this way, the lattice of partitions corresponds to the lattice of flats of the graphic matroid of the complete graph. Another example illustrates the refining of partitions from the perspective of equivalence relations. If "D" is the set of cards in a standard 52-card deck, the "same-color-as" relation on "D" – which can be denoted ~ – has two equivalence classes: the sets {red cards} and {black cards}. The 2-part partition corresponding to ~ has a refinement that yields the "same-suit-as" relation ~, which has