共查询到19条相似文献,搜索用时 62 毫秒
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本文研究了环Fpm+uFpm+u2Fpm上长度为ps的循环码分类.通过建立环Fpm+uFpm+u2Fpm到环Fpm+uFpm的同态,给出了环Fpm+uFpm+u2Fpm上长度为ps的循环码的新分类方法.应用这种方法,得到了环Fpm+uFpm+u2Fpm长度为ps的循环码的码词数. 相似文献
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本文研究了有限域上置换多项式的构造问题.利用分段方法构造了Fq2上形如(xq-x+c)(k(q2-1))/(d)+1+xq+x的置换多项式,其中1≤k < d且d是q-1的任意因子,推广了已有文献中的某些结果. 相似文献
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给出了环F2+uF2上任意偶长的(1+u)-常循环码的结构,确定了给定偶长度F2+uF2上(1+u)-常循环码的数目.通过Gray映射,得到了F2+uF2上偶长的(1+u)-常循环码的二元象. 相似文献
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本文首先给出(α,β)-γ开集定义,获得了(α,β)-γ开集性质;然后引入了(α,β)-γ-Ti空间和(α,β)-γ-Ti*空间概念(i=0,1/2,1,2,5/2),并得到它们更广泛的拓扑性质. 相似文献
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令R=Fq+vFq是一个有限非链环,其中q是一个奇素数的方幂,v2=v.文章利用二元斜多项式环R[x,y;ρ,θ]来研究环R上的2维斜常循环码的代数结构和相关性质,其中ρ和θ是环R上的两个自同构映射.基于中国剩余定理,文章确定了环R上2维(α1+β1v,α2+β2v)-斜常循环码的生成元结构并且考虑了它们的Gray象,其中α1+β1v和α2+β2v都是环R上的可逆元.此外,文章研究了环R上2维(α1+β1v,α2+β2v)-斜常循环码的对偶码并且确定了对偶码子码的生成元结构. 相似文献
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Ewa Krusi
ska 《Applied Mathematics Letters》1988,1(4):357-360
The paper presents Lp-solution for logistic discriminant function in dichotomous as well as in the polychotomous problem. 相似文献
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We prove that for 1 p < r < 2, every n-dimensional subspace E
of L
r, in particular
l
r
n
, well-embeds into l
p
m
for some m (1 + $$\epsilon$$)n,
where well depends on p, r, and the arbitrary $$\epsilon$$ > 0, but not on n. 相似文献
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QI Minyou 《中国科学A辑(英文版)》2000,43(8):785-791
In modern radar techniques, pulse signal can be replaced by the chirps, which is taken to be signals inL
p
space. Wigner’s function and ambiguity functions are constructed in anL
p
frame and a partial generalization of the uncertainty principle is given by means of the notion of coherent dual. 相似文献
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Kenneth L. Wiggins 《Journal of Approximation Theory》1979,26(4):329-339
In this paper best Lp approximate solutions are shown to exist for a wide class of integrodifferential equations. Using approximation theory techniques, a local existence theorem for solutions is established, and the convergence of the best approximate solutions to a solution is shown. 相似文献
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Let p > 1, and dμ a positive finite Borel measure on the unit circle Γ: = {z ε C: ¦z¦ = 1}. Define the monic polynomial φn, p(z)=zn+…εPn >(the set of polynomials of degree at most n) satisfying
. Under certain conditions on dμ, the asymptotics of φn, p(z) for z outside, on, or inside Γ are obtained (cf. Theorems 2.2 and 2.4). Zero distributions of φn, p are also discussed (cf. Theorems 3.1 and 3.2). 相似文献
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