安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- What is combinatorics? - Mathematics Stack Exchange
In fact,I once tried to define combinatorics in one sentence on Math Overflow this way and was vilified for omitting infinite combinatorics I personally don't consider this kind of mathematics to be combinatorics, but set theory It's a good illustration of what the problems attempting to define combinatorial analysis are
- combinatorics - Why is $2^n$ considered to be all the possible . . .
To reiterate $2^n-1$ is a fine answer to its own question the question of how many non-empty subsets a set has $2^n$ is a fine answer to its own question the question of how many subsets (empty or not) a set has Do not confuse the questions and do not immediately discount the one or the other as being unworthy of being asked or discussed
- combinatorics - A comprehensive list of binomial identities . . .
Is there a comprehensive resource listing binomial identities? I am more interested in combinatorial proofs of such identities, but even a list without proofs will do
- combinatorics - Distinguishable indistinguishable objects and . . .
How many ways are there to distribute 5 balls into 7 boxes if each box must have at most one in it if: a) both the boxes and balls are labeled b) the balls are labeled but the boxes are not c) the
- combinatorics - What is a combinatorial proof exactly? - Mathematics . . .
Combinatorics is a wide branch in Math, and a proof based on Combinatorial arguments can use many various tools, such as Bijection, Double Counting, Block Walking, et cetera, so a combinatorial proof may involve any (or a combination) of these
- combinatorics - Intuition behind negative combinations - Mathematics . . .
You'll need to complete a few actions and gain 15 reputation points before being able to upvote Upvoting indicates when questions and answers are useful What's reputation and how do I get it? Instead, you can save this post to reference later
- combinatorics - How To Tell When Order Matters Or Not - Mathematics . . .
Comically badly worded question - particularly amusing is the phrase 'each card displays one positive integer without repetition from this set' :) it's almost like the output of a bot fed elementary combinatorics questions!
|
|
|