(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

(mathematics) a function of the type f:V⨯V→V, or more generally, a function of the type f:U_1⨯U_2⨯...⨯U_n→V in which exactly two of the sets Uᵢ are equal to V.

plural of fuddy-duddy

(finance) A form of collective investment in which money from many investors is pooled and invested in stocks, bonds, short-term money market instruments, or other securities under the direction of a fund manager.

(finance) An investment fund that makes investment decisions by sophisticated quantitative analysis.

(of a model or replica) Of the same size, scale, or proportions as an original object. / Thorough; complete; not lacking in any detail.

Agent noun of fumble; one who fumbles.

One who is employed, or otherwise engaged in an activity, on a full-time basis.

Alternative spelling of Führer

(medicine) A form of magnetic resonance imaging that records the flow of blood to areas of the brain when the patient is undertaking a specific neural activity.