# factor

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## factor,

in arithmetic, any number that divides a given number evenly, i.e., without any remainder. The factors of 12 are 1, 2, 3, 4, 6, and 12. Similarly in algebra, any one of the algebraic expressions multiplied by another to form a product is a factor of that product, e.g., a+b and ab are factors of a2b 2, since (a+b)(ab)=a2b2. In general, if r is a rootroot,
in mathematics, number or quantity r for which an equation f(r)=0 holds true, where f is some function. If f is a polynomial, r is called a root of f; for example, r=3 and r
of a polynomialpolynomial,
mathematical expression which is a finite sum, each term being a constant times a product of one or more variables raised to powers. With only one variable the general form of a polynomial is a0xn+a1x
equation f(x)=0, then (xr) is a factor of the polynomial f(x).

## factor

[′fak·tər]
(mathematics)
For an integer n, any integer which gives n when multiplied by another integer.
For a polynomial p, any polynomial which gives p when multiplied by another polynomial.
For a graph G, a spanning subgraph of G with at least one edge.
(statistics)
A quantity or a variable being studied in an experiment as a possible cause of variation.

## factor

1. Maths
a. one of two or more integers or polynomials whose product is a given integer or polynomial
b. an integer or polynomial that can be exactly divided into another integer or polynomial
2. Med any of several substances that participate in the clotting of blood
3. Law, Commerce a person who acts on another's behalf, esp one who transacts business for another
4. former name for a gene
5. Commercial law a person to whom goods are consigned for sale and who is paid a factorage
6. (in Scotland) the manager of an estate

## factor

A quantity which is multiplied by another quantity.

## factor

A number that divides evenly into another number. For example, 3 and 4 are factors of 12. See factorial and IFP.
References in periodicals archive ?
Three major areas will be explored as to the cause of depression in children, including biological factors, psychological factors and environmental factors.
Several recent research reports suggest that social workers may underestimate the influence of biological factors and even hold family members primarily accountable for an individual's mental illness (Johnson et al.
Several other biological factors associated with high-fructose corn sweeteners appear to boost their negative effects on Americans' waistlines as well.
A Yale study found that women are more likely to get medical attention for depressive symptoms because their relatives usually attribute the symptoms to biological factors such as menopause and postpartum experiences.
Lead researcher Prof Allen Wilcox said there were apparently biological factors promoting intercourse during a woman's most fertile days, whether they wanted a baby or not.
To the Editor: Bacchetti (1) notes "Our findings suggest that the possibility should not be discounted that biological factors peaking in the third decade of life may promote variant Creutzfeldt-Jakob disease (vCJD) prion replication and consequent development of disease.
Critical habitat, as defined in the ESA, is a regulatory term for a specific area that contains physical and biological factors that are essential for the conservation of a listed species.
Ultimately, the data will affect the models used to interpret ocean-color measurements in terms of biological factors (e.
Vulnerability to personality disorders (as, perhaps, to schizophrenia and bipolar disorder) is "patterned by biological factors and shaped by the environment," he said.
Much evidence concludes that schizophrenia is caused by biological factors, that it is a brain disease; other researchers contend that it is, rather, a complex disorder resulting from one or more factors, such as obstetric birth complications, exposure to a prenatal virus, heredity, or being a member of a dysfunctional family.
In addition to physical and biological factors, there is also a symbiotic condition under which flavors sing.
The combination of the two types of tests produces results that are "highly accurate," Constantine notes, but technical errors are possible, and biological factors can occasionally produce problems.

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