Difference between revisions of "Q-Binomial coefficient"

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The $q$-Binomial coefficient is
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The $q$-Binomial coefficient ${n \brack k}_q$ is
$$\left[ \begin{array}{ll} n \\ k \end{array} \right]_q = \dfrac{(q;q)_n}{(q;q)_k(q;q)_{n-k}},$$
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$${n \brack k}_q = \dfrac{(q;q)_n}{(q;q)_k(q;q)_{n-k}},$$
 
where $(q;q)_{\xi}$ denotes the [[q-Pochhammer symbol]].
 
where $(q;q)_{\xi}$ denotes the [[q-Pochhammer symbol]].
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=Properties=
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[[q-Pochhammer as sum of q-binomial coefficients]] <br />
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=References=
  
 
[[Category:SpecialFunction]]
 
[[Category:SpecialFunction]]

Latest revision as of 19:44, 15 December 2016

The $q$-Binomial coefficient ${n \brack k}_q$ is $${n \brack k}_q = \dfrac{(q;q)_n}{(q;q)_k(q;q)_{n-k}},$$ where $(q;q)_{\xi}$ denotes the q-Pochhammer symbol.

Properties

q-Pochhammer as sum of q-binomial coefficients

References