Computations of the Adams-Novikov E2-term*

The author introduces the notion of a minimal resolution for BPBP-comodules,and gives an effective algorithm to produce minimal resolutions. This produces the data needed in the work [3] for studying motivic stable stems up to stem 90 .     

Cotorsion Pairs and Stable Categories over Triangular Matrix Rings北大核心CSCD

In general, the properties of modules over a triangular matrix ring T = (0ABU) are studied via modules over diagonal “small rings” A and B. However, we use model structures on the category of T-modules to characterize the stable categories GP(A), GP(B) of Gorenstein projective modules over A and B. To this end, we introduce two subcategories of Gorenstein T-modules, and obtain two corresponding complete cotorsion pairs. Moreover, cotorsion pairs of modules are lifted to T-complexes, and the equivalences and recollements of homotopy categories of complexes are studied. © 2022 Chinese Academy of Sciences. All rights reserved.     

(R)型准可解流形上映射同伦类的拓扑熵的下确界

设$f$是(R)型准可解流形$M$上的连续自映射, $N^\infty(f)$是$f$的渐近Nielsen数,本文将利用Nielsen不动点理论,给出$\log\,N^\infty(f)$是$f$的映射同伦类的拓扑熵的下确界的充分条件,这些条件将推广准幂零流形上的类似结果.