random symmetric z, n= 5 brute sum zero? False
pluecker z, n= 5 brute sum zero? True
x/random, n= 5 zero? True
random symmetric z, n= 6 brute sum zero? False
pluecker z, n= 6 brute sum zero? True
x/random, n= 6 zero? False
python3 sanity.py  0.02s user 0.01s system 86% cpu 0.034 total
