Wei Qi

collaborators

2 papers

math.RA2024

A note on pure-semisimple rings

Xiaolei Zhang, Wei Qi

In this note, we give several characterizations of left pure-semisimple in terms of the (pre)envelope, (pre)cover, direct limits, direct sums, inverse limits and direct products pr…

math.AC2024

Some remarks on almost projective envelopes

Xiaolei Zhang, Wei Qi, Dechuan Zhou

Let $R$ be a commutative ring. An $R$ -module $M$ is said to be almost projective if $Ext_{R}^{1} (M, N) = 0$ for any $R_{m}$ -module $N$ and any maximal ideal $\mathfrak…