scholarly journals Random Integer Lattice Generation via the Hermite Normal Form

Entropy ◽  
2021 ◽  
Vol 23 (11) ◽  
pp. 1509
Author(s):  
Gengran Hu ◽  
Lin You ◽  
Liang Li ◽  
Liqin Hu ◽  
Hui Wang

Lattices used in cryptography are integer lattices. Defining and generating a “random integer lattice” are interesting topics. A generation algorithm for a random integer lattice can be used to serve as a random input of all the lattice algorithms. In this paper, we recall the definition of the random integer lattice given by G. Hu et al. and present an improved generation algorithm for it via the Hermite normal form. It can be proven that with probability ≥0.99, this algorithm outputs an n-dim random integer lattice within O(n2) operations.

Symmetry ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1125
Author(s):  
Carlos Marijuán ◽  
Ignacio Ojeda ◽  
Alberto Vigneron-Tenorio

We propose necessary and sufficient conditions for an integer matrix to be decomposable in terms of its Hermite normal form. Specifically, to each integer matrix, we associate a symmetric integer matrix whose reducibility can be efficiently determined by elementary linear algebra techniques, and which completely determines the decomposability of the first one.


1987 ◽  
Vol 12 (1) ◽  
pp. 50-59 ◽  
Author(s):  
P. D. Domich ◽  
R. Kannan ◽  
L. E. Trotter

1969 ◽  
Vol 6 (02) ◽  
pp. 301-308
Author(s):  
A.M.V. Verhagen

A stochastic process in which any tree in a forest planted on an integer lattice eliminates its four neighbours when it exceeds their heights, is studied for the case when all heights are independent samples from a continuous distribution. The proportion of the trees of the forest eliminated in this manner is determined for both the one and the two dimensional integer lattices.


2021 ◽  
Vol 613 ◽  
pp. 183-200
Author(s):  
Gook Hwa Cho ◽  
Hyang-Sook Lee ◽  
Seongan Lim ◽  
Yoonjeong Kim

1969 ◽  
Vol 6 (2) ◽  
pp. 301-308
Author(s):  
A.M.V. Verhagen

A stochastic process in which any tree in a forest planted on an integer lattice eliminates its four neighbours when it exceeds their heights, is studied for the case when all heights are independent samples from a continuous distribution. The proportion of the trees of the forest eliminated in this manner is determined for both the one and the two dimensional integer lattices.


2016 ◽  
Vol 164 ◽  
pp. 66-86 ◽  
Author(s):  
Gengran Hu ◽  
Yanbin Pan ◽  
Renzhang Liu ◽  
Yuyun Chen

1993 ◽  
Vol 100 (3) ◽  
pp. 242 ◽  
Author(s):  
William J. Gilbert

2008 ◽  
Vol 19 (04) ◽  
pp. 751-765 ◽  
Author(s):  
MARCO ALMEIDA ◽  
NELMA MOREIRA ◽  
ROGÉRIO REIS

We give a canonical representation for minimal acyclic deterministic finite automata (MADFA) with n states over an alphabet of k symbols. Using this normal form, we present a method for the exact generation of MADFAs. This method avoids a rejection phase that would be needed if a generation algorithm for a larger class of objects that contains the MADFAs were used. We give upper and lower bounds for MADFAs enumeration and some exact formulas for small values of n.


Author(s):  
Molly L. Perencevich ◽  
Robert S. Burakoff

The objective definition of diarrhea is stool weight 〉200 g per day. The more common subjective definition is frequency of defecation that is greater than or equal to three stools per day combined with less-than-normal form and consistency. Diarrhea is also defined by duration. Acute diarrhea is defined as 〈2 weeks in duration, persistent diarrhea between 2 and 4 weeks, and chronic diarrhea more than 4 weeks in duration. In the United States most cases of acute diarrhea are due to infections and are self-limited. Noninfectious etiologies are more common in chronic diarrhea. The evaluation and general management of acute and chronic diarrhea are discussed in this chapter.


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