左富足半群上的同余（英文）

本文研究了一类特殊的左富足半群,即左GC-lpp-半群上的R^*-同余.我们利用类似正则半群上同余的核迹方法分别刻画了这类半群上具有相同核和迹的最大和最小同余.同时,我们也得到了左GC-lpp-半群上的幂等元R*-同余的一些性质,并建立了这种同余的结构.     

二项式系数幂和序列在模p2下的几个性质

利用同余理论和多项式理论研究二项式系数幂和序列在模p2下的同余性质,得到了一些非平凡结果.为进一步研究二项式系数幂和序列的多项式递推公式提供有利的工具.     

二项式系数和序列的同余性质

利用同余理论研究了二项式系数和序列an（r,s）和bn（ε,a,b,c）分别在模p^2和模p^3下的同余性质,这将为研究它们的多项式递推公式提供有利的工具.     

交换半环上商半模的若干研究

在经典代数的基础上,讨论了交换半环上的同余关系与同余类,并在它们与可消半模,稠密子半模,序关系及其最小元的基础上,证明了L-商半模的一些性质,然后定义了L-商半模上的不变子半模,并开始在其基础上讨论L-商变换,结合同态同构来研究它的若干性质.     

Sturm-Liouville算子的迹与谱函数的关系

<正> 自第一个微分算子的迹恒等式被发现以来,出现了各种推广与算法.与迹有关的各种关系式和应用,也在不断发掘中.其中最重要的是将迹用于研究特征值反问题与KdV方程的周期解. 本文考察带离散谱的奇型Sturm-Liouville算子.通过研究它的迹对边界参数α的依     

Siegel模形式的一个注记

给出了任意同余子群上的Siegel模形式的特征描述和Siegel模形式空间维数的一些估计 .对于小权k ,也给出了J⁰_k ,1(Γ_n)和S^k_n(Γ_n)的一个比较关系     

弱P-反演半群上的强P-同余

本文利用核-迹方法，研究了弱P-反演半群上的强P-同余．给出了强P-同余对和强P-同余关系之间的结构定理．     

三次分拆数模5的幂

三次分拆由Hei-Chi Chan引入,并由Byungchan Kim命名,因为它和Ramanujan的三次连分数联系在一起.Hei-Chi Chan证明了三次分拆函数具有模3的幂的Ramanujan型同余.在最近的一篇文章中,William Y.C.Chen和Bernard L.S.Lin研究了三次分拆函数模5的同余...     

L-模糊环同余和L-模糊模同余

本文证明了环上的L-模糊理想和环上的L-模糊环同余关系是一一对应的,模上的L-模糊子模和模上的L-模糊模同余关系是一一对应的.     

纯正半群上若干同余的刻划(英文)

本文在纯正半群上首先引入了关系ρｍｉｎ,ρｍａｘ,ρｍｉｎ和ρｍａｘ,刻划了纯正半群上一般同余的迹类。然后利用核－迹方法给出了纯正半群上几类特殊同余的等价刻划。在此基础上,进一步研究了各类同余间的相互联系,把逆半群上有关同余的若干结果推广到纯正半群上。     

Congruences for the coefficients of weakly holomorphic modular forms

Recent works have used the theory of modular forms to establishlinear congruences for the partition function and for tracesof singular moduli. We show that this type of phenomenon iscompletely general, by finding similar congruences for the coefficientsof any weakly holomorphic modular form on any congruence subgroup     

Hecke operators for weakly holomorphic modular forms and supersingular congruences

We consider the action of Hecke operators on weakly holomorphic modular forms and a Hecke-equivariant duality between the spaces of holomorphic and weakly holomorphic cusp forms. As an application, we obtain congruences modulo supersingular primes, which connect Hecke eigenvalues and certain singular moduli.

     

Exact formulas for traces of singular moduli of higher level modular functions

Zagier proved that the traces of singular values of the classical j-invariant are the Fourier coefficients of a weight 3/2 modular form and Duke provided a new proof of the result by establishing an exact formula for the traces using Niebur's work on a certain class of non-holomorphic modular forms. In this short note, by utilizing Niebur's work again, we generalize Duke's result to exact formulas for traces of singular moduli of higher level modular functions.     

Kloosterman sums and traces of singular moduli

We give a new proof of some identities of Zagier relating traces of singular moduli to the coefficients of certain weakly holomorphic half integral weight modular forms. These identities play a central role in Zagier's work on the infinite product isomorphism introduced by Borcherds. In addition, we derive a simple expression for writing twisted traces of singular moduli as infinite series.     

On Ramanujan’s modular identities

For Ramanujan’s modular identities connected with his well-known partition congruences for the moduli 5 or 7, we had given, in an earlier paper, natural and uniform proofs through the medium of modular forms. Analogous (modular) identities corresponding to the (more difficult) case of the modulus 11 are provided here, with the consequent partition congruences; the relationship with relevant results of N J Fine is also sketched.     

Zagier Duality for the Exponents of Borcherds Products for Hilbert Modular Forms

A certain sequence of weight modular forms arises in the theoryof Borcherds products for modular forms for SL₂(Z). Zagier proveda family of identities between the coefficients of these weight forms and a similar sequence of weight 3/2 modular forms, whichinterpolate traces of singular moduli. We obtain the analogousresults for modular forms arising from Borcherds products forHilbert modular forms.     

Congruences for Traces of Singular moduli

We extend a result of Ahlgren and Ono (Compos. Math. 141, 293–312, 2005) on congruences for traces of singular moduli of level 1 to traces defined in terms of Hauptmodul associated to certain groups of genus 0 of higher levels.      

Congruences between Siegel modular forms

Using the moduli theory of abelian varieties and a recent result of Böcherer-Nagaoka on lifting of the generalized Hasse invariant, we show congruences between the weights of Siegel modular forms with congruent Fourier expansions. This result implies that the weights of p-adic Siegel modular forms are well defined.     

Arithmetic properties of coefficients of half-integral weight Maass–Poincaré series

Zagier [23] proved that the generating functions for the traces of level 1 singular moduli are weight 3/2 modular forms. He also obtained generalizations for “twisted traces”, and for traces of special non-holomorphic modular functions. Using properties of Kloosterman-Salié sums, and a well known reformulation of Salié sums in terms of orbits of CM points, we systematically show that such results hold for arbitrary weakly holomorphic and cuspidal half-integral weight Poincaré series in Kohnen’s Γ₀(4) plus-space. These results imply the aforementioned results of Zagier, and they provide exact formulas for such traces.