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Dec
31
revised Binomial Sum Related to Fibonacci: $\sum\binom{n-i}j\binom{n-j}i=F_{2n+1}$
more descriptive title
Dec
31
revised Prove this formula for the Fibonacci Sequence
tex, formatting
Dec
30
revised Find a non-Lipschitz Riemann integrable function that her Fourier series converge uniformly to her
tex &c
Dec
30
revised How prove this $\prod_{1\le i<j\le n}\frac{a_{j}-a_{i}}{j-i}$ is integer
more details
Dec
27
revised How to rewrite $7-\sqrt 5$ in root form without a minus sign?
texification
Dec
26
revised Evaluating Combination Sum $\sum{n+k\choose 2k} 2^{n-k}$
more descriptive title
Dec
26
revised Is there a “counting groups/committees” proof for the identity $\binom{\binom{n}{2}}{2}=3\binom{n+1}{4}$?
more descriptive title
Dec
25
revised How does $\dim \mathbb C$ work?
minor
Dec
25
revised What is the value of $\sum_{n=0}^{\infty}(-\frac{1}{8})^n\binom{2n}{n}$
edited tags
Dec
24
revised Prove or disprove $a^{\varphi(m)}=a^{k\,\varphi(m)}\pmod{m}$
edited tags
Dec
22
revised How find all postive integer number such $(n+k)\nmid \binom{2n}{n}$
edited tags
Dec
22
revised Counting subsets with r mod 5 elements
fixing texification
Dec
22
revised Counting subsets with r mod 5 elements
rolled back to a previous revision
Dec
21
revised Solve $x^6 \equiv x \pmod{396}$
edited tags
Dec
21
revised How to calculate variant of geometric series based on sequences of Catalan numbers?
edited tags
Dec
20
revised Prove that for all non-negative integers $m,n$, $\frac{(2m)!(2n)!}{m!n!(m + n)!}$ is an integer.
edited tags; edited tags
Dec
20
revised Number of Terms in a Polynomial (4th Degree)
edited tags
Dec
19
revised Law of sines: uniform proof of Euclidean, spherical & hyperbolic cases
more descriptive title; wikipedia ref; minor edits
Dec
17
revised Does $\frac{0}{0}$ really equal $1$?
edited tags
Dec
14
revised Fermat's Challenge
added 2 characters in body