# 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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

## 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
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

## 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.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
As shown in [Figure 3], the FVIII recovery correlated with age (IVR = 1.39 + 0.06 x age, R 2 = 0.21, P = 0.005) and VWF:Ag (IVR = 0.23 + 0.007 x VWF:Ag, R 2 = 0.28, P < 0.01).
vWF is a large, multimeric protein secreted from endothelial cells.
Cryoprecipitated human VWF and fresh PRP from unknown healthy human volunteers are obtained the day of the experiment from the Johns Hopkins Special Coagulation Laboratory.
In the '90s, initial studies demonstrated a relation between VWF and leukocyte recruitment at a low shear rate.
AF patients have elevated FVIII and VWF levels, most likely due to endothelial damage, which is present in the intracardiac and peripheral environment as well.
Routine recommended tests in acquired von Willebrand disease are vWF:Ag assay, vWF:Ag activity assay, and ristocetin cofactor assay (vWF:RCo/Ag ratio) (normal = 1) [2, 7].
Increased shear stress leading to destruction of vWF, especially high molecular weight multimers, is implicated in
Twenty nine (14.5%) patients were having low level of vWF:Ag.
Von Willebrand factor antigen (VWF:Ag) concentrations were determined with an in-house ELISA assay, using polyclonal rabbit anti-human VWF antibodies (DakoCytomation) for capturing and detecting (23).
VWF is a large, complex, multimer plasma glycoprotein composed of repeated units that are polymerised from dimers by disulphide bonds (Figure 1) (7).
The aim of this study was to assess the relevance of different markers of endothelial cell dysfunction, namely sTM, vWF, sE-selectin and EMPs, to determine the most specific and sensitive endothelial biomarker, in attempt to identify the most reliable noninvasive laboratory marker for detection of CHC patients at high risk of developing portal hypertension, as this may launch new targets for treatment of such condition.

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