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1. One that performs an operation or a function.
2. Grammar See function word.

[New Latin fūnctor, from Latin fūnctiō, performance, function; see function.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Grammar) (in grammar) a function word or form word
2. (Mathematics) (in mathematics) a function that maps elements of one set to those of another
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈfʌŋk tər)

that which functions; operator.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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The topics include a constructive approach to higher homotopy operations, the right adjoint to the equivalent operadic forgetful functor on incomplete Tambara functions, the centralizer resolution of the K(2)-local sphere at the prime 2, the quantization of the modular function and equivariant elliptic cohomology, complex orientations for THH of some perfectoid fields, and the Mahowald square and Adams differentials.,The proceedings of a July 2017 conference on homotopy theory held in Urbana, Illinois contains 11 selected papers.
For x, y [member of] [OMEGA] one can show that functor [d.sub.R] defined by
In the case where objects of a category are categories, morphisms are called functor. A functor F : C [right arrow] D between categories C and D is a structure preserving mapping of objects to objects and morphisms to morphisms with: F(f : A [right arrow] B) = F(f) : F (A) [right arrow] F(B);F(gof) = F(g)oF(f); and F (id A) = idF(A).
We write q to denote both a formal variable and a degree shift functor which shifts the degree by 1.
The function F : (L, M)-DFIL [right arrow] (L, M)-DFTOP defined by [mathematical expression not reproducible] and F([phi]) = [phi] is a functor.
which alleviates the functor problem, then then the reasoner finds a quick proof in the order of 0.2 seconds.
Note that the projection [[pi].sub.1]: G(G,X,[alpha]) [right arrow] G, given by [[pi].sub.1](g,x) = g is a functor from the category G(G,X,[alpha]) to the category G viewed as a small category with one object and whose arrows are the elements of the group.
Considering Horn as a functor, we can show that the following sequences are exact:
Observe that [[GAMMA].sub.a](M) is a submodule of M and [[GAMMA].sub.a](-) is a left exact a-torsion functor of R-modules and R-homomorphisms.
(ii) exponential objects exist in A, i.e., for each A-object A, the functor A x -: A [right arrow] A has a right adjoint, i.e., for any A-object B, there exist an A-object [B.sup.A] and an A-morphism [e.sub.A,B]: A x [B.sub.A] [right arrow] B (called the evaluation) such that for any A-object C and any A-morphism f: A x C [right arrow] B, there exists a unique A-morphism [bar.f]: C [right arrow] [B.sub.A] such that [e.sub.A,B] [omicron] ([id.sub.A] x [bar.f]) = f, i.e., the diagram commutes:
A quantum screen network (QS) can be defined as a Functor from the edge screen network ES to the category of Hilbert spaces.