Βίβλος περί παραμυθίας της φιλοσοφίας
Boethius Anicius Manlius Torquatus Severinus
Ακαδημία Αθηνών (1999)
The series "Philosophi Byzantini" is published by the Academy of Athens under the auspices of the International Union of Academies and the supervison of an international commitee (L. Benakis, R. Browing, H. Hunger, C. A. Trypanis, G. Verbeke, D. Zakynthinos). Director of the series is Dr. Linos Benakis.
On a General Theory of Anisotropy of Matter. The Special Decomposition of the Compliance Tensor
Θεοχάρης Περικλής Σ.
Ακαδημία Αθηνών (1999)
A newly developed approach based on the spectral decomposition principle, which is usefull in crystallography , is applied for the first time in this paper. The compliance fourth-rank tensor of crystalline media belonging to the monoclinic system is, thus, spectrally decomposed, its eigenvalues are evaluated, together with the elementary idempotent fourth-rank tensors, which decompose uniquely the fourth-rank tensor space into orthogonal subspaces. Accordingly, energy orthogonal states of stress and strain are derived from the idempotent tensors, namely eigenstates which do...
