combination

a. the set of numbers that opens a combination lock

b. the mechanism of this type of lock

2. Brit a motorcycle with a sidecar attached

3. Maths

a. an arrangement of the numbers, terms, etc., of a set into specified groups without regard to order in the group

b. a group formed in this way. The number of combinations of n objects taken r at a time is n!/[(n -- r)!r!]. Symbol: _nC_r

4. the chemical reaction of two or more compounds, usually to form one other compound

5. Chess a tactical manoeuvre involving a sequence of moves and more than one piece

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

combination

[‚käm·bə′nā·shən]

(mathematics)

A selection of one or more of the elements of a given set without regard to order.

combination

(mathematics)

A set containing a certain number of objects selected from another set.

The number of combinations of r objects chosen from a set of n is

n C r = n! / ((n-r)! r!)

where "n C r" is normally with n and r as subscripts or as n above r in parentheses.

See also permutation.

combination

(reduction)

In the theory of combinators, a combination denotes an expression in which function application is the only operation.

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Combination

(in Russian, kombinatsiia). (1) An interdependent union, connection, or arrangement of several objects or component parts (elements) of a single object.

(2) A set of procedures for carrying out a complex plan, such as a chess combination.

(3) A contrivance, trick, or subterfuge; a deliberate maneuver to achieve a mercenary or other improper goal (commercial combination; political combination).

(4) An item of women’s underclothing (a slip).

Combination

in mathematics. Combinations of n elements taken k at a time are sets that contain k of the n elements and that differ from each other in at least one element. The number of combinations of n elements, k at a time, is denoted by , C (n, k), or and is equal to n!/k!(n - k)! (seeCOMBINATORICS).

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References in periodicals archive

Oliveira, "A new methodology in power estimation in CMOS combinational circuits at logic level," 48th Midwest Symposium on Circuits and Systems, 2005., Covington, KY, 2005, pp.

PAELib: A VHDL Library for Area and Power Dissipation Estimation of CMOS Logic Circuits

For the in vivo antitumor study, the microneedle system contained only the anti-PD-1 antibody or 1-MT showed limited antitumor efficiency, while a considerable antitumor effect was observed in combinational therapy.

The Application of Nanoparticle-Based Drug Delivery Systems in Checkpoint Blockade Cancer Immunotherapy

This indicates that when aiming to move on to hardware implementation, the combination of a higher number of tapping bits along with the use of an XOR as the combinational function gives the best performance overall.

EFFECT OF THE NUMBER OF TAPPING BITS OF THE A5/1 STREAM CIPHER TOWARDS HARDWARE PERFORMANCE

Construction Principles of a Combinational Balanced Risk Index

The Portfolio Balanced Risk Index Model and Analysis of Examples of Large-Scale Infrastructure Project

Therefore, the combinational effects of lower NaN[O.sub.2] and NaCl concentrations on Salmonella growth need to be evaluated and predictive models need to be developed to evaluate the effects.

Evaluation of Salmonella growth at low concentrations of NaN[O.sub.2] and NaCl in processed meat products using probabilistic model

FPGA chip needs to be repeated programming, it cannot be like ASIC, through the gate circuit to achieve the basic functions of combinational logic, and can only be achieved through an easy to configure the structure.

Design and development of a dynamic wearable computer device platform

The proposal stipulates that all initial understandings that are discussed in the military and security committee are directly linked in terms of implementation to the combinational power which is supposed to be the product of discussions in the political committee.

Committees emanating from Kuwait negotiations meet evening