Misspelling of in any way, shape, or form.

(differential geometry) the Riemannian metric for 2-dimensional manifolds, i.e. given a surface with regular parametrization x(u,v), the first fundamental form is a set of three functions, {E, F, G}, dependent on u and v, which give information about local intrinsic curvature of the surface. These functions are given by

(databases) A stage in the normalization of a relational database in which a database is in Boyce-Codd normal form and all multi-valued dependencies are functional dependencies.

(obsolete) The Backus-Naur form.

(databases) A stage in the normalization of a relational database in which repeating groups and attributes have been eliminated by putting each into a separate table connected by a primary-key/foreign-key relationship.

(computing) A formal notation for context-free grammars.

(databases) A stage in the normalization of a relational database in which a database is in fourth normal form and every join dependency is implied by the candidate keys.

(databases) A stage in the normalization of a relational database in which a database is in second normal form and all non-key attributes are mutually independent (no transient dependencies.)

(databases) A stage in the normalization of a relational database in which it is in first normal form and every non-key attribute is dependent upon the entire primary key.

(logic) A way of expressing a formula of predicate logic such the formula consists of a prenex and a matrix, with the prenex preceding the matrix.