Basketball the basketball is also regulated. For men, the official ball is in circumference (size 7, or a "295 ball") and weighs 22 oz (623.69 grams). If women are playing, the official basketball size is in circumference (size 6, or a "285 ball") with a weight of 20 oz (567 grams). In 3x3, a formalized version of the halfcourt 3-on-3 game, a dedicated ball with the circumference of a size 6 ball but the weight of a size 7 ball is used in all competitions (men's, women's, and mixed teams). The ball may be advanced toward the basket by being shot,
Size consistency and size extensivity (to any order), and full configuration interaction (CI) are size extensive but not always size consistent. For example, the Restricted Hartree–Fock model is not able to describe correctly the dissociation curves of H and therefore all post HF methods will fail in that matter (except FCI). Sometimes numerical errors can cause a method that is formally size-consistent to behave in a non-size-consistent manner. Core-extensivity is yet another related property, which extends the requirement to the proper treatment of excited states. Size consistency and size extensivity In quantum chemistry, size consistency and size extensivity are concepts relating to how the behaviour