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y - Institute for Building Materials - ETH Zürich

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Applet<br />

x i+1<br />

Square test<br />

Theorem of Marsaglia g<br />

x<br />

(1968)<br />

For a congruential generator the random<br />

numbers b i in an n-cube cube-test b t ttest t li lie on parallel ll l<br />

n-1 n 1 1 dimensional dimensional hyperplanes.<br />

∃ a a a x + a x + + a x p =<br />

1 1,..., , , n : ( 1 i 2 i + 1 ... n i + n n− 1 ) mod p 0<br />

proof using:<br />

∃∀ pcn , , at least one set<br />

a a,..., a :<br />

( 1<br />

n )<br />

1 ... ) n<br />

ac + + a c mod p =<br />

1 n p<br />

1<br />

0<br />

n<br />

27<br />

28

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