Is $k[x^2+x,x^3+x]$ a UFD?
49126
For which $f,g \in k[t]$, $k[f,g]$ is integrally closed?
41742
inverse limit of $k[x]/(x^n)$
153465
Is there a closed form expression for $1 + x + x^{4} + x^{9}+x^{16}+x^{25} +..+x^{k^2}$?
20218
Is this field extension finite?
75349
Minimal polynomial of $\sqrt[3]{2} + \sqrt{3}$
149055
Uniform convergence of $\sum\limits_{k=1}^{\infty}\dfrac{kf(x^2)}{1+k^3f(x^2)^2}$
133164
Rational solutions for $x^2+y^2=3$
145507
Is $K[a,b]=K(a,b)$ for algebraic $a, b$?
133775
Is $\mathbb{Z}[\sqrt{-7}]$ a UFD or not?
56171
Is $K(X)$ never algebraically closed?
68790
Do we have $K(\beta)=K(\beta^2)$ for field extension of odd degree?
97652
Can every real polynomial be factored up to quadratic factors?
71572
factor-square property (FSP) of polynomials
43593
half-derivative of $x^2$
236
Proof of general Euclid's Lemma in a UFD (by Euclidean algorithm?)
68528
$f(x)=x^n+5x^{n-1}+3$ can't be expressed as the product of two polynomials
144042
On the functional square root of $x^2+1$