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
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 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
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 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.

See also divisor.

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 ?
This volume contains chapters divided into sections on cancer incidence, prevalence, mortality, and surveillance; methods, technologies, and study design and cancer epidemiology; and host susceptibility factors in cancer epidemiology.
"If we can identify which genes are involved and what susceptibility factors there are, preventive measures could be taken," he said.
One of the puzzles of the 2009 pandemic of novel H1N1 influenza virus is why some populations are being hit harder than others--a reminder that known susceptibility factors cannot always explain why otherwise healthy people succumb to diseases that others survive.
The investigators were unable to identify any particular susceptibility factors for heart failure in case reports; the adverse event occurred not only in elderly patients but also among patients younger than 60 years (26%, 42 of 162) and, in 99 analyzable cases, after many weeks of use (median of 24 weeks).
In this collection of 21 contributions, experts from the US, Europe, and Israel describe methods of diagnosis and management across a range of age groups and situations, including the etiopathogenetic aspects of type 1 diabetes and genetic susceptibility factors, immunology in type 1 diabetes, neonatal diabetes, diagnosis and management of maturity-onset type diabetes in the young, insulin treatment (including continuous insulin infusion therapy), medical nutrition therapy, quality management, physical activity, invasive and noninvasive means of diabetes self-management, issues encountered in adolescent diabetics, and complications, among other topics.
Another major commitment that will have long-range implications was approved by the Research Programs Advisory Committee of a special research initiative on genetic susceptibility factors in MS.
The investigators believe this is the first study to examine multiple NER polymorphisms together as susceptibility factors for breast cancer in combination with smoking.
We propose a multidisciplinary programme of work to examine how host genetic susceptibility factors and responses such as DNA damage repair and inflammation affect melanoma development and progression following UVR exposure.
This opportunity includes both laboratory- and population-based studies on the biological response to environmental exposures to pollutants as well as studies of susceptibility factors due to genetics, age, nutritional status, or co-morbid conditions.