Di!erential equations and boundary conditions which describe physical phenomena are often obtained from physical principles by means of the variational calculus techniques. The necessary conditions for the existence of extremes of a functional lead to the Euler di!erential equation which involves un
ON THE EXISTENCE OF WEAK SOLUTIONS IN THE STUDY OF BEAMS
β Scribed by R.O. Grossi; R. Scotto; E. Canterle
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 158 KB
- Volume
- 212
- Category
- Article
- ISSN
- 0022-460X
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## Abstract This paper studies the existence of weak solutions of the NavierβStokes system defined on a certain class of domains in β^3^ that may contain cusps. The concept of such a domain and weak energy solution for the system is defined and its existence is proved. However, thinness of cusps mu
## Abstract This paper presents necessary and sufficient conditions for an __n__ βth order differential equation to have a nonβcontinuable solution with finite limits of its derivatives up to the order __l__ at the rightβhand end point of the interval of its definition, __l__ β€ __n__ β 2 (Β© 2010 WI