The page image is loading... 
1003  Volume 05  1941  1004  Volume 05  1941 
Summary: "Stepfunction" is defined. An analytic formula given for one. If a function in a
substitution is a step function of the variables, the corresponding variable in the
solved equations is a stepfunction of the time. The effect in a field of a stepfunction
is discussed, The essential conditions for a break are a cloud of dots, each of which
has a number associated with it saying "change one of the stepfunctions to this new value" and not a surface as suggested on 898. 

Break surface 0898 0906 Critical surface if not related to essential variables 1021 1027 1175 2832 

This page is referenced from 3 pages: 1017 1239 1457  This page references page 898 This page is referenced from 4 pages: 906 1038 1039 1057 
This image is reproduced courtesy of The Estate of W. Ross Ashby. Copyright 1972, 2008 © The Estate of W. Ross Ashby 