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| 1990 | Volume 09 | 1945 | 1991 | Volume 09 | 1-Aug-45 | Poona, India |
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Summary: It is decided that a 1st Jacobian matrix (J.M.) cannot be accepted as physically real unless, for each i, not all aii , aiσ aσi , ... are zero. This is necessary and sufficient that the 2nd J.M. has all main-diagonal elements non-zero and this is the simplest
test for it. It follows that a more correct form of the relation is ∑1..n[f]ρ=[F], the sum including the n-th power. This last power adds any missing diagonal terms. See 2056 |
| This image is reproduced courtesy of The Estate of W. Ross Ashby. Copyright 1972, 2008 © The Estate of W. Ross Ashby |
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