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Applications of a necessary and sufficient condition for OLS to be BLUE

✍ Scribed by Badi H. Baltagi


Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
412 KB
Volume
8
Category
Article
ISSN
0167-7152

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πŸ“œ SIMILAR VOLUMES


Necessary and Sufficient Conditions for
✍ K. Gopalsamy; Lizhi Wen; Yong-Shao Chen; Xue-Zhong He πŸ“‚ Article πŸ“… 1993 πŸ› John Wiley and Sons 🌐 English βš– 416 KB

## Abstract Necessary and sufficient conditions for a fourth order functional differential equation of the form (1) [r(t)yβ€³(t)]β€³+f(t,y(h~1~(t)), y(h~2~(t)), …, y(h~n~(t)))=0 to be oscillatory are given when f is strongly superlinear or strongly sublinear.

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I n this study we reformulate GODEL'S completeness theorem such that any firstorder calculus can be tested for completeness. The theorem in this form gives simple sufficient and necessary algebraic conditions for the calculus to be complete.