|Subject:||[Help-glpk] What is a vanishing variable?|
|Date:||Wed, 30 Sep 2009 12:35:54 -0700|
This isn't a GLPK-specific question, but this seems like a good place to ask this question.|
I am reading a journal article from the 60's. The author mentions "non-vanishing variables." With the context, it seems like this might be a term for "non-zero valued variables" but I am just guessing. Is there a formal definition of a 'vanishing variable' that anyone has heard of? Maybe it's a linear algebra term? Couldn't find a good definition/use via google.
Here is the sentence where the term is first used:
"Let T be a given basic feasible solution of (3) and denote by N--the number
of not vanishing t_i in T; V_y--the number of vanishing y_i in T..."
In the LP described by (3), t's and y's are the decision variables, all >= 0.
Thanks in advance...
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