Discriminant of $x^n-1$
9246
Calculating $\prod (\omega^j - \omega^k)$ where $\omega^n=1$.
68323
Using Vieta's theorem for cubic equations to derive the cubic discriminant
133580
Nth derivative of $x^x$
12955
Classification of $n\times n$ real matrices up to congruence
31029
Characteristic polynomial of a matrix of $1$'s
16035
Irreducibility of $X^{p-1} + \cdots + X+1$
27629
How to prove that $S^{2n+1}/S^1$ is homeomorphic to $\mathbb CP^n$ under a given identification
121706
Show $\text{det}(A)$ is divisible by $2^{n-1}$
141983
Complex polynomial of degree $n$
120981
$(x-x_0)^0$ in power series
88181
Splitting field of $X^n-a$
108382
Prove $x^n-1$ is divisible by $x-1$ by induction
114418
A deduction from $x^n-1=(x^2-1)\prod_{k=1}^{(n-2)/2}[x^2-2x\cos{\frac{2k\pi}{n}}+1]$
156858
Kernel of powers of a normal operator
157552
Find the coefficient of $x^n$ simply by using binomial theorem
52078
Multinomial Coefficients Definition in expansion of $(1+x+x^2+\cdots+x^l)^n$
91028
determinant of a matrix with binomial coefficient entries