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1725  Volume 07  2Aug44  1726  Volume 07  1944 
Summary: In an absolute system (variables x_{1} ... x_{K} ... x_{n}) of fixed organisation [x^{~}_{i} = f_{i}(x)], that a subsystem (variables x_{1} ... x_{K}) should itself be absolute (the other variables x_{K+1} ... x_{n} being given all random starting points in the testing) it is necessary and sufficient
that f_{1} ... f_{K} should not change for any or all changes of x_{K+1} ... x_{n}. 

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