Ben
7,706
reputation
- Do the groups $\operatorname{SL}$, $\operatorname{PGL}$, and $\operatorname{PSL}$ over a field $K$ always have the same automorphism group?
- Prove there is no isotopy interchanging a pair of figure-eight spaces linked with two lines
- Does formal smoothness of $R \to R[x,y]/(f)$ imply $(f,f_x,f_y)=R[x,y]$?
- What (if anything) is wrong with this "proof" of $\frac{d}{dx}e^x=e^x$?
- Conceptual explanation for an identity of Hochschild about derivations
- Homology of $K(\mathbb{Z}/n,1)$ via Fibrations.
- Generator for Kahler differentials of an affine elliptic curve
- Non-split exact sequence of locally free sheaves on $\mathbb{P}^1$