All Questions
Tagged with integer-partitions permutations
34
questions
5
votes
3
answers
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How many combinations of $3$ natural numbers are there that add up to $30$?
How many combinations of $3$ natural numbers are there that add up to $30$?
The answer is $75$ but I need the approach.
Although I know that we can use $_{(n-1)}C_{(r-1)}$ i.e. $_{29}C_2 = 406$ but ...
- 179
1
vote
1
answer
385
views
Integer Partition by Counting Repetition : Conjecture ??
I would like to find informations regarding this way of doing Integer Partitions or
this conjecture,
Suppose you have all the ordered partitions of 5:
5
4 1
3 2
2 2 1
3 1 1
2 1 1 1
1 1 1 1 1
Then ...
- 53
2
votes
0
answers
44
views
order of elements in a partition using Maple
I determined this whole partition but I just want to have the finer the partition
for example:
I have this
...
- 121
7
votes
1
answer
4k
views
Number of permutations with a given partition of cycle sizes
Part of my overly complicated attempt at the Google CodeJam GoroSort problem involved computing the number of permutations with a given partition of cycle sizes. Or equivalently, the probability of a ...
- 294