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user158293
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4 votes
2 answers
165 views

Why is $\binom{n}{k}$ for fixed $n$ not Gosper summable?

4 votes
1 answer
124 views

binomial identity seemingly illogical and impossible. Is there any way it could be true?

3 votes
1 answer
882 views

Complex Lie groups

2 votes
2 answers
131 views

simplify radicals

2 votes
1 answer
135 views

Kummer's hypergeometric negative integer

2 votes
2 answers
120 views

text error or not in book A=B

1 vote
1 answer
154 views

orthogonal polynomials and determinant of jacobi matrix

1 vote
1 answer
101 views

Questions concerning analytic and singularities of power series

1 vote
0 answers
456 views

involutive automorphisms

1 vote
0 answers
33 views

Is it possible to simplify this binomial expression?

0 votes
0 answers
32 views

An identity satisfied by 'harmonic numbers' [duplicate]

0 votes
1 answer
41 views

C finite sequences from page 74 of book 'The Concrete Tetrahedron by Manuel Kauers ,Peter Paule'

0 votes
0 answers
32 views

differential extensions meaning, use, validity of some expressions, derivation, := meaning

0 votes
0 answers
38 views

Gamma functions approaches solely n to a negative power [duplicate]

0 votes
0 answers
119 views

average number of comparisons in Quicksort

0 votes
1 answer
34 views

A Hypergeometric probability distribution and Zeilberger

0 votes
2 answers
1k views

semi-simple and simple lie group,SO(n) for n even

-4 votes
1 answer
553 views

What is wrong with the following formation of a killing form or metric matrix for sl(2,r)? [closed]