# 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 ?
This leads to enhanced activity of the normal JH1 kinase activity of JAK2, which makes the mutated hematopoietic stern cells hypersensitive to the hematopoietic growth factors thrombopoietin, erythropoietin, insulin-like growth factor-1, stem cell factor, and granulocyte colony-stimulating factor, resulting in trilinear hypermyeloproliferation.
Hematopoietic growth factors and monoclonal antibodies, increasingly advocated as adjunctive agents to prolong the duration of treatment and reduce tumor growth, added still more costs.
Laszczewska participated in clinical trials of treatment for prostate cancer, testicular cancer, kidney cancer and supportive care trials with the use of hematopoietic growth factors.
The book covers indications for transfusions of several specialized products, such as red cells, platelets, granulocytes, hemostatic agents, mononuclear cells, immune globulin, and hematopoietic growth factors, as well as others.
At the same time, the advent of hematopoietic growth factors and the use of peripheral stem cell transplants has lowered the risk of the procedure.
Transfusion Medicine offers complete guidance on the full range of topics from donor recruitment, blood collection and storage, to testing and transfusing blood components, complications and transmissible diseases, as well as cellular engineering, therapeutic apheresis, and the role of hematopoietic growth factors.

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