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 ?
However, in the large subset of couples without male factor infertility, ICSI use was associated with significantly lower implantation rates (23.
This could have a huge impact on the rising rate of male factor infertility.
There were no differences between the pregnant and nonpregnant patient subgroups with respect to age, endometrial thickness, or the prevalence of tubal pathology, uterine fibroids, and male factor (data not shown).
12) However, with tubal occlusion and severe male factor infertility, sperm washing coupled with IVF/ICSI should be performed.
Adami H-O and Trichopoulos D, Cervical cancer and the elusive male factor, editorial, New England Journal of Medicine, 2002, 346(15):1160-1161.
It's pointless subjecting a woman to a battery of tests if her partner hasn't even had a basic sperm count - a male factor contributes to half of all cases of infertility.
It is suggested that health care providers can more effectively address the needs of couples with male factor infertility by taking a sexual history as part of an initial infertility assessment, and by encouraging couples to temporarily view sexual functioning and the quest for pregnancy as separate issues.
Male factor infertility occurs when the sperm produced are low in vitality or number.
Since IVM has a limited use in ART practice, convincing couples with male factor infertility such as azoospermia for IVM is very difficult.
A male factor, almost always marked by abnormal semen analysis, is responsible for 20% of couple infertility and contributes to infertility in 30% to 40% of couples.