Of ordering for items with numerical

In order theory, a branch of mathematics, a semiorder is a type of ordering for items with numerical scores, where items with widely differing scores are compared by their scores and where scores within a given margin of error are deemed incomparable. Semiorders were introduced and applied in mathematical psychology by Duncan Luce as a model of human preference. They generalize strict weak orderings, in which items with equal scores may be tied but there is no margin of error. They are a special case of partial orders and of interval orders, and can be characterized among the partial orders by additional axioms, or by two forbidden four-item suborders.

Boris Alexandrovitch Chetkov was a Russian painter and glass artist known for his vivid works which range across genres but can be loosely aligned with Expressionism, Abstract Expressionism and Figurative Expressionism. His theories on art and use of colour also align him broadly with Modernism and Kandinsky though in his painting he worked largely in isolation from his peers and remained disconnected from the international art community until the end of Communism. He was a member of the Saint Petersburg Union of Artists.

The Great Electric Show and Dance is an album by blues musician Lightnin' Hopkins recorded in Texas and released on Stan Lewis' Jewel Records label in 1969.