Mathematics
Johann Cigler's user avatar
Johann Cigler's user avatar
Johann Cigler's user avatar
Johann Cigler
  • Member for 11 years, 9 months
  • Last seen this week
Profile Activity
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1,301
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9k
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13
answers
35
questions
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18
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24
Posts
50
Posts %
9
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7
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15
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8
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5
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10
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6
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3
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6
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5
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12
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25
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3
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3
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6
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Top posts
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All Questions Answers
Score Newest
question
9
Proof of a Binomial identity
Jul 16, 2019
question
7
Lucky chance or combinatorial cause?
May 7, 2012
question
7
Prove $(1-x)^{2k+1} \sum\limits_{n\ge 0}\binom{n+k-1}{k}\binom{n+k}{k} x^n = {\sum\limits_{j\ge 0} \binom{k-1}{j-1}\binom{k+1}{j} x^j} $
Jul 17, 2014
question
5
A curious identity for powers of the generating function of the Catalan numbers.
Apr 24
question
5
An identity for $q-$Fibonacci numbers if $q$ is a root of unity.
Apr 25, 2016
question
5
A curious Hankel determinant
Jan 6, 2018
question
4
Some identities for polynomials defined by their generating function.
Nov 20
question
4
A class of integer valued polynomials
Apr 2, 2021
answer
4
Recurrence for $q$-analog for the Stirling numbers?
Feb 24, 2012
question
3
Reference request for a divisibility property of Fibonacci numbers
Mar 1, 2016
Top network posts
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40
Curious $q$-analogues
27
Some binomial coefficient determinants
22
A q-rious identity
20
Are the q-Catalan numbers q-holonomic?
14
Why worry about the axiom of choice?

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