Kre-O Kre-O KRE-O is a line of construction toys (similar to Lego and Mega Bloks) manufactured by South Korea-based Oxford and marketed by Hasbro. Kre-O was released in stores in Fall 2011. The name "Kre-O" comes from the Latin word "creo", which means "I create". Kre-O toys feature highly articulated humanoid figures called Kreons. Kre-O blocks are compatible with Lego bricks, hence also compatible with Mega Bloks and other building block brands. Kre-O "Transformers" is the first line of the Kre-O series. They were first shown in February 2011 at the American International Toy Fair trade show in New York. Transformers
K-trivial set K-trivial set In mathematics, a set of natural numbers is called a K-trivial set if its initial segments viewed as binary strings are easy to describe: the prefix-free Kolmogorov complexity is as low as possible, close to that of a computable set. Solovay proved in 1975 that a set can be K-trivial without being computable. The Schnorr–Levin theorem says that random sets have a high initial segment complexity. Thus the K-trivials are far from random. This is why these sets are studied in the field of algorithmic randomness, which is a subfield of Computability theory and related to algorithmic information