On the solution of the three forces problem and its application in optimal designing of a class of symmetric plane frameworks of least weight
✍ Scribed by Mariano Vázquez Espí; Jaime Cervera Bravo
- Publisher
- Springer-Verlag
- Year
- 2011
- Tongue
- English
- Weight
- 329 KB
- Volume
- 44
- Category
- Article
- ISSN
- 1615-1488
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📜 SIMILAR VOLUMES
The inverse spectral problem for porphin is solved by the regularized least squares method. For determining 30 force constants related to in-plane molecular vibrations, 256 frequencies of porphin and its four deuteratcd derivatives are used. The form of the porphin molecule vibrations is discussed.
First we define relations between the u = (s\* + s + 1) (s + 1) flags (point-line incident pairs) of a finite projective plane of order s. Two flags a E (p, 1) and b = (p', l'), where p and p' are two points and 1 and 1' are two lines of the projective plane, are defined to