# Category

121

**Category:Ottoman law**— This category contains few articles/categories. It has been requested that this category be populated. Please help categorize articles/categories on related topics and add [[Category:Ottoman law]] to any articles/categories that belong here.… …122

**Category of magmas**— In mathematics, the category of magmas (see category, magma for definitions), denoted by Mag, has as objects sets with a binary operation, and morphisms given by homomorphisms of operations (in the universal algebra sense). The category Mag has… …123

**Category:Childhood psychiatric disorders**— This category reflects the organization of International Statistical Classification of Diseases and Related Health Problems, 10th Revision. Generally, diseases outlined within the ICD 10 codes F80 F98 should be included in this category.… …124

**Category:Mythological weapons**— Mythological weapons are legendary weapons from a relatively cohesive set of myths. Weapons derived solely from works of fiction without any mythological value do not belong in this category. See also Use Category:Fictional weapons for weapons… …125

**Category:NASA personnel**— v · d · …126

**Category of medial magmas**— In mathematics, the medial category Med, that is, the category of medial magmas has as objects sets with a medial binary operation, and morphisms given by homomorphisms of operations (in the universal algebra sense). The category Med has direct… …127

**Category of metric spaces**— The category Met, first considered by Isbell (1964), has metric spaces as objects and metric maps or short maps as morphisms. This is a category because the composition of two metric maps is again metric.The monomorphisms in Met are the injective …128

**Category of elements**— In category theory, for every presheaf P inhat C := mathbf{Set}^{C^{op the category of elements mathbf{El}(P) of P is the category defined as follows: * its objects are pairs (A,a) where A is an object of C and ain P(A), * its morphisms (A,a) o… …