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testTimeForLLLonSyzygies -- test timing for LLL on syzygies

Description

We randomly choose an $r \times\ n$ matrix A over ZZ with entries up to the given Height, and take the time to compute B=ker A and an LLL basis of B.

i1 : setRandomSeed "nice example 2";
 -- setting random seed to 12638458417381289481402307077
i2 : r=10,n=20

o2 = (10, 20)

o2 : Sequence
i3 : (m,t1,t2)=testTimeForLLLonSyzygies(r,n,Height=>11)

o3 = ({5, 2.91596e52, 9}, .00198406, 0)

o3 : Sequence
i4 : (m,t1,t2)=testTimeForLLLonSyzygies(15,30,Height=>100)

o4 = ({50, 2.30853e454, 98}, .00297346, .0277995)

o4 : Sequence
i5 : L=apply(10,c->(testTimeForLLLonSyzygies(15,30))_{1,2})

o5 = {{.00396348, .00893556}, {.00396434, .00297545}, {.00397003, .00496218},
     ------------------------------------------------------------------------
     {.00396227, .00794394}, {.00495671, .0109189}, {.0049668, .0109216},
     ------------------------------------------------------------------------
     {.00396883, .0059443}, {.00396996, .00595889}, {.0029768, .00397212},
     ------------------------------------------------------------------------
     {.00497021, .00595528}}

o5 : List
i6 : 1/10*sum(L,t->t_0)

o6 = .004166944000000017

o6 : RR (of precision 53)
i7 : 1/10*sum(L,t->t_1)

o7 = .006848819199999889

o7 : RR (of precision 53)

Ways to use testTimeForLLLonSyzygies:

  • testTimeForLLLonSyzygies(ZZ,ZZ)

For the programmer

The object testTimeForLLLonSyzygies is a method function with options.


The source of this document is in RandomComplexes.m2:492:0.