thanks to Manuel ...
Rothenberg efficiency
http://www.ixpres.com/interval/dict/rothenbergefficiency.htm
Rothenberg stability
http://www.ixpres.com/interval/dict/rothenbergstability.htm
Rothenberg redundancy
http://www.ixpres.com/interval/dict/rothenbergredundancy.htm
Lumma stability
http://www.ixpres.com/interval/dict/lummastability.htm
Lumma impropriety
http://www.ixpres.com/interval/dict/lummaimpropriety.htm
as always, i encourage others to submit corrections,
criticisms, elaborations, and lots of diagrams!
-monz
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