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Is nonlinearity incontrovertible? What about hidden variables? 
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#1
Feb1011, 07:39 AM

P: 1,011

Some systems are said to not obey the superposition principle. This is because certain relations are found which are not arrived at by simple addition or subtraction. However, I wonder if some "nonlinear systems" can be modeled directly from an underlying set of linear equations. Now, I don't assume that such a set of equations would be finite. One must somehow generate such equations, though not necessarily by using a system of nonlinear equations. Is it possible? If so, can such a process theoretically apply to all nonlinear systems?



#2
Feb1011, 08:42 AM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 39,552

You can always approximate a nonlinear system by a sufficiently complicated linear system. Is that what you mean?



#3
Feb1011, 02:11 PM

PF Gold
P: 960




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