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Results tagged with co.combinatorics
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user 5296
Enumerative combinatorics, graph theory, order theory, posets, matroids, designs and other discrete structures. It also includes algebraic, analytic and probabilistic combinatorics.
-1
votes
1
answer
377
views
partition of a set
First, we see this example.
Suppose we have a set of 6 elements, we can get 3 subsets of it, each of which has 2 elements, but no two sets overlap.
But if our set has 5 elements, we want to get 3 subs …
- 39
-4
votes
1
answer
631
views
Solution to $ \sum (-1)^k \binom{n}{k} \alpha_k = b_n$? [closed]
Is there anyone can tell me any information about the integer solution to the combinatotial equation
$$
\sum (-1)^k \binom{n}{k} \alpha_k = b_n
$$
(all variables are integers)?
For example,
suppose a …
- 39