All articles starting with F
15,892 articles
Factor mobility
Factor mobility is the ability to move a factor of production, meaning labor, capital, or land, out of one production process into another, across firms, industries, or countries.
Factor of safety
The factor of safety, also called the safety factor, is the dimensionless ratio by which a structure's capacity exceeds the load applied to it in engineering design.
Factor price equalization
Factor price equalization is a theorem of international trade theory, proved by Paul Samuelson in 1948, that free trade in goods equalizes factor prices like wages across countries.
Factor rotation
Factor rotation is a transformation in exploratory factor analysis that reorients the factor axes to reach simple structure, changing nothing about how well the model fits the data.
Factor theorem
The factor theorem is an algebra theorem stating that a number a is a zero of a polynomial f(x) if and only if x − a is a factor.
Factor V Leiden
Factor V Leiden (FVL, factor V R506Q) is the most common inherited thrombophilia, an F5 gene mutation causing activated protein C resistance; carried by 3–8% of Europeans, it raises venous thromboembolism risk but only marginally increases recurrence.
Factor VIII
Factor VIII (antihemophilic factor) is the clotting cofactor deficient in hemophilia A; carried by von Willebrand factor, half-life 8–16 h, cloned 1984, recombinant since 1992, extended half-life and mimetic alternatives now available.
Factor X
Factor X (Stuart–Prower factor) is a vitamin K-dependent liver serine protease, first enzyme of the common coagulation pathway, encoded by F10 on 13q34; its inherited deficiency affects about 1 per million people.
Factorial
The factorial of a non-negative integer n, written n!, is the product of all integers from n down to 1, so 5! = 120 and 0! = 1.
Factorial design
A factorial design is an experimental design varying two or more factors together so one set of runs estimates each factor's effect and their interactions.
Factorial experiment
A factorial experiment varies several input factors, each at two or more levels, so every combination appears in the plan, estimating both main effects and interactions that one-factor-at-a-time studies miss.
Factorial survey experiment
A factorial survey experiment is a survey-embedded experimental method in which respondents judge short hypothetical vignettes whose attributes are randomly varied, introduced by Peter H. Rossi in 1951.
Factoring (finance)
Factoring, also called invoice factoring or accounts receivable financing, is the sale of a company's receivables to a factor at a discount for immediate cash.
Factorio
Factorio, by Wube Software, is a 2D factory automation and management simulation first released in 2012, on Steam early access in 2016, version 1.0 in 2020, and 2.0 with the Space Age expansion in 2024; 2.1 is its last major update.
Factorization
Factorization is the decomposition of an element of a ring into a product of simpler elements, generalizing prime factorization of integers; unique factorization domains are where this decomposition is unique.
Factorization of polynomials
Factorization of polynomials is the computation expressing a polynomial as a product of irreducible factors over a given coefficient ring, a central problem in computational algebra.
Factorization of polynomials over finite fields
Factorization of polynomials over finite fields is the task of writing a polynomial over Fq as a product of irreducible polynomials, computed by efficient algorithms.
Factors of production
Factors of production, also called agents of production, are the inputs an economy uses to produce goods and services: classically land, labor, and capital, earning rent, wages, and interest.
Factory
A factory, also called a production plant or manufactory, is a building or complex where goods are manufactured or processed with power-driven machinery and organized labor, a system that arose during the Industrial Revolution.
Factory Act
The Factory Act (工場法) was Japan's first full-scale labor protection law, promulgated in 1911 and enforced in 1916, limiting hours and night work for women and young workers and requiring accident compensation.
Factory Law of 1897
The Factory Law of 1897 (Фабричное законодательство 1897 г.), enacted on 2 June 1897, was the Russian Empire's first law limiting the working day, capping it at 11.5 hours with Sunday rest.
Factory method pattern
The factory method pattern, or factory design pattern, is a creational design pattern in which a superclass declares an object-creating method that subclasses override to pick the concrete class.
Factory Records
Factory Records, formally Factory Communications Limited, was a Manchester independent record label founded by Tony Wilson and Alan Erasmus in 1978, home to Joy Division, New Order, Happy Mondays and The Durutti Column, operator of the Haçienda, and bankrupt in November 1992.
Factory Records discography
Factory Records discography: the FAC 1–511 catalogue of the Manchester label founded 1978 by Tony Wilson and Alan Erasmus, home of Joy Division, New Order, and The Durutti Column, with prefixes FAC, FACT, FACD, and overseas imprints, ending in the November 1992 collapse.
Factory reset
A factory reset is a procedure returning a device to the software state it was in when it left the manufacturer, erasing user data and settings and removing user-installed applications.
Factory system
The factory system is a method of manufacturing in a centralized workplace with powered machinery, emerging in Britain during the Industrial Revolution, beginning at Arkwright's Cromford Mill in 1771.
Factris
Factris is an Amsterdam-based fintech founded in 2017 by Brian Reaves that buys and finances small and medium-sized enterprises' unpaid invoices through factoring, reporting over €2 billion financed across Europe.
Facts (Tom MacDonald song)
"Facts" is a January 26, 2024 single by Canadian rapper Tom MacDonald featuring conservative commentator Ben Shapiro, his rap debut. It hit No. 1 on iTunes, No. 16 on the Hot 100, and topped Billboard's Rap Digital Song Sales chart.
FACTS Grounding
FACTS Grounding is a benchmark and online leaderboard built by Google DeepMind and Google Research, announced in November 2024, that tests whether LLM answers stay fully grounded in a supplied document.
FactSage
FactSage is a thermochemical software and database package that calculates chemical equilibria, phase equilibria, and phase diagrams in multicomponent systems, introduced in 2001 as the fusion of FACT-Win and ChemSage.