# 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 ?
The genetic causes of male factor infertility: a review.
Male factors including structural abnormalities and sperm production disorders, to name a few, are the main causes of infertility among men, said Andronikou.
The current role of IUI for treatment of male factor and unexplained infertility.
This study consisted of 77 infertile couples with unexplained (n = 46) and mild male factor (n = 31) infertility.
The male factor (MF) constituted 23.65% of the cases, of which more than two-thirds (16.42% of the total) were MF-only with a success rate of 10.71%.
Patients experiencing male factor infertility generally display high levels of damaged DNA (77), as compared to fertile men (10), and this fact denotes the inherent problems in spermatogenesis (37).
Men with severe male factor infertility, which is defined as a sperm count of less than 5 million/mL, "should be evaluated with basic tests and should be fully evaluated by a urologist to look for other potential problems that could coincide with infertility such as testicular tumors," he said in an interview at the annual meeting of the American Society for Reproductive Medicine (ASRM).
The common treatment for severe male factor infertility was intracytoplasmic sperm injection (ICSI) and increased incidence of sex chromosomal aneuploidy in offspring was evident by this method due to bypassing the natural selection criteria (5).
Through the collected evidence, we conclude that Vitamin D receptor polymorphism might play a major role in male factor infertility either directly or indirectly by reducing the effects of Vitamin D.
Whether you have PCOS, endometriosis, male factor infertility, unexplained infertility, thyroid issues, or are over forty, "How to Get Pregnant, Even When You've Tried Everything" shows how to move through it and achieve the dream of motherhood.
Issues affecting fertility that are dealt with chapter by chapter are body weight, the effects of both obesity and under-weight; female factors limiting fertility, including PCOS, fibroids, premature ovarian failure, tubal disorders, genetic issues, cysts and adhesions, cancer treatment and endometriosis; male factor infertility (in the UK, for example, 30% of infertility cases are attributable to this); coeliac disease; unexplained infertility and reproductive immunology, developed in a following chapter outlining a case history; and dietary, lifestyle and nutritional factors.
Q: How do you diagnose mild male factor infertility (MMFI) and what are the causes for MMFI?

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