What is Direct image functor?

Direct electric action is one of various systems used in pipe organs to control the flow of air into the organ's pipes when the corresponding keys or pedals are depressed....

Foreign direct investments in Kosovo play an important role in the region's economy. However, this type of investment has historically been limited. Foreign sovereign investors in Kosovo primarily include regional...

Direct text marketing is a form of SMS marketing. This includes using a medium which involves text messaging over a mobile device and can be done from a mobile phone...

In mathematics, the Landweber exact functor theorem, named after Peter Landweber, is a theorem in algebraic topology. It is known that a complex orientation of a homology theory leads to...

In combinatorics, the skew sum and direct sum of permutations are two operations to combine shorter permutations into longer ones. Given a permutation π of length m and the permutation...

In mathematics, especially in the field of representation theory, Schur functors are certain functors from the category of modules over a fixed commutative ring to itself. They generalize the constructions...

In algebraic geometry, a functor represented by a scheme X is a set-valued contravariant functor on the category of schemes such that the value of the functor at each scheme...

In category theory, the notion of final functor is a generalization of the notion of final object in a category. A functor...

In mathematics, in the theory of sheaves the direct image with compact support is an image functor for sheaves. It is one of Grothendieck's six operations.

In mathematics, more specifically sheaf theory, a branch of topology and algebraic geometry, the exceptional inverse image functor is the fourth and most sophisticated in a series of image functors...