Siamese cat occasionally Siamese were born with "blue" (a cool grey) points, genetically a dilution of seal point; chocolate (lighter brown) points, a genetic variation of seal point; or lilac (pale warm gray) points, genetically a diluted chocolate. These colours were at first considered "inferior" seal points, and were not qualified for showing or breeding. All of these shades were eventually accepted by the breed associations, and became more common through breeding programmes specifically aimed at producing these colours. Later, outcrosses with other breeds developed Siamese-mix cats with points in other cat colours and patterns, including Red and Cream point, lynx (tabby)
Fixed-point combinator grammar, transitive closure, and other types of closure operations. A function for which "every" input is a fixed point is called an identity function. Formally: In contrast to universal quantification over all formula_53, a fixed point combinator constructs "one" value that is a fixed point of formula_57. The remarkable property of a fixed point combinator is that it constructs a fixed point for an "arbitrary given" function formula_57. Other functions have the special property that after being applied once, further applications don't have any effect. More formally: Such functions are called idempotent (see also projection). An example of such a