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Fix a residual ordinary representation :GF→GLn(k) of the absolute Galois group of a number field F. Generalizing work of Greenberg–Vatsal and Emerton–Pollack–Weston, we show that the Iwasawa invariant...
On the Galois Group of generalized Laguerre polynomials
Newton polygon Galois group of big generalized laguerre polynomials
2014/12/25
Using the theory of Newton Polygons, we formulate a simple criterion for the Galois group of a polynomial to be “large.” For a fixed α∈ℚ-ℤ <0 , Filaseta and Lam have shown that the nth deg...
TORSION IN THE COHOMOLOGY OF CONGRUENCE SUBGROUPS OF SL(4, Z) AND GALOIS REPRESENTATIONS
Reverse calculation congruence subgroup the group of cohomology homologous yields Galois calculating torsional prime
2014/12/24
We report on the computation of torsion in certain homology the-ories of congruence subgroups of SL(4, Z). Among these are the usual group cohomology, the Tate-Farrell cohomology, and the homology of ...
Galois环上循环码新的表示
循环码 Galois环 离散傅里叶变换
2010/1/22
近年来,在编码理论中,Galois环上码的研究成为编码理论工作者研究的一个热点。定义了Galois环上循环码的离散傅里叶变换及Mattson-Solomon(MS)多项式,证明了Galois环上的循环码同构于Galois环的Galois 扩张的理想。
Galois FCSR的内部状态分析
周期互补序列 状态序列 进位序列
2009/8/6
研究Galois FCSR状态序列的周期与互补性质及进位序列的互补性质。根据周期序列与有理数2-adic表达之间的关系,证明l-序列的状态序列是准周期的,且其周期与l-序列的周期相同。分析以q为极小连接数的l-序列a的状态序列s=(s0, s1,…, sn)及进位序列c=(c0, c1,…, cn),证明若s在t时刻进入周期,则i≥t时,si si T/2 ...
粗糙Galois连接
粗糙概念 概念格 粗糙Galois连接
2009/6/16
在粗糙集中讨论概念格,定义粗糙形式背景、粗糙概念,给出它们的性质,在粗糙形式背景中借助蕴涵算子研究上、下近似运算,并且定义和讨论了粗糙Galois 连接。