From the 1 of 5 linked papers with an AI index.
5 papers
Spectral extremal problems on planar and outerplanar graphs without $C_{k,l}
Jiamin Li, Dan Li, Xilong Yin +1
The paper determines the maximum spectral radius and the unique extremal planar and outerplanar graphs that avoid the graph C_{k,l} (two cycles sharing a vertex) for all large n.
Theorem on the Goldbach Conjecture
Jiamin Li, Jianya Liu
For , we say Proposition holds if every sufficiently large even integer can be written as where is either …
Anisotropic quadratic equations in three variables
Jiamin Li, Jianya Liu
Let be an indefinite anisotropic integral quadratic form with determinant , and a non-zero integer such that is square-free. It is proved in th…
Local cohomology and Segre products
Jiamin Li, Wenliang Zhang
We prove a Künneth formula for local cohomology of a Segré product of graded modules supported in a Segré product of ideals. In order to apply our formula to the study of cohomo…
On the error term concerning the number of cyclic subgroups of Z_l \times Z_m \times Z_n with lmn\leqslant x
Jing Ma, Jiaming Li, Jia Zhang
Let Zn denote the additive group of residue classes modulo n. Let c(l,m,n) denote the number of cyclic subgroups of Zl *Zm *Zn. For any x > 1, we consider the asymptotic behavior o…