enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Stars and bars (combinatorics) - Wikipedia

   en.wikipedia.org/wiki/Stars_and_bars_(combinatorics)

   It can be used to solve a variety of counting problems, such as how many ways there are to put n indistinguishable balls into k distinguishable bins. [4] The solution to this particular problem is given by the binomial coefficient ( n + k − 1 k − 1 ) {\displaystyle {\tbinom {n+k-1}{k-1}}} , which is the number of subsets of size k − 1 ...

3. Combination - Wikipedia

   en.wikipedia.org/wiki/Combination

   In mathematics, a combination is a selection of items from a set that has distinct members, such that the order of selection does not matter (unlike permutations).For example, given three fruits, say an apple, an orange and a pear, there are three combinations of two that can be drawn from this set: an apple and a pear; an apple and an orange; or a pear and an orange.

4. Combinatorics - Wikipedia

   en.wikipedia.org/wiki/Combinatorics

   Combinatorics is an area of mathematics primarily concerned with counting, both as a means and as an end to obtaining results, and certain properties of finite structures.It is closely related to many other areas of mathematics and has many applications ranging from logic to statistical physics and from evolutionary biology to computer science.

5. Kirkman's schoolgirl problem - Wikipedia

   en.wikipedia.org/wiki/Kirkman's_schoolgirl_problem

   A solution to Kirkman's schoolgirl problem with vertices denoting girls and colours denoting days of the week [1] Kirkman's schoolgirl problem is a problem in combinatorics proposed by Thomas Penyngton Kirkman in 1850 as Query VI in The Lady's and Gentleman's Diary (pg.48). The problem states:

6. Fisher's method - Wikipedia

   en.wikipedia.org/wiki/Fisher's_method

   Under Fisher's method, two small p-values P 1 and P 2 combine to form a smaller p-value.The darkest boundary defines the region where the meta-analysis p-value is below 0.05.. For example, if both p-values are around 0.10, or if one is around 0.04 and one is around 0.25, the meta-analysis p-value is around 0

7. Combinatorial modelling - Wikipedia

   en.wikipedia.org/wiki/Combinatorial_modelling

   Simple combinatorial problems are the ones that can be solved by applying just one combinatorial operation (variations, permutations, combinations, …). These problems can be classified into three different models, called implicit combinatorial models.

8. Combinatorial explosion - Wikipedia

   en.wikipedia.org/wiki/Combinatorial_explosion

   Combinatorial explosion is sometimes used to justify the intractability of certain problems. [ 1 ] [ 2 ] Examples of such problems include certain mathematical functions , the analysis of some puzzles and games, and some pathological examples which can be modelled as the Ackermann function .

9. Combinatorial optimization - Wikipedia

   en.wikipedia.org/wiki/Combinatorial_optimization

   A minimum spanning tree of a weighted planar graph.Finding a minimum spanning tree is a common problem involving combinatorial optimization. Combinatorial optimization is a subfield of mathematical optimization that consists of finding an optimal object from a finite set of objects, [1] where the set of feasible solutions is discrete or can be reduced to a discrete set.