subprincipal
nounEtymology From sub- + principal.
1
A subordinate principal; vice-principal.
subprincipal
adjEtymology From sub- + principal.
1
Mathematics, Sciences Empty gloss, No gloss (mathematics)
- Then we prove the well-posedness of the Cauchy problem in all Gevrey classes assuming, on the double characteristic manifold, that the ratio of the imaginary part of the subprincipal symbol to the real eigenvalue of the Hamilton map is bounded and that the sum of the real part of the subprincipal symbol and the modulus of the imaginary eigenvalue of the Hamilton map is strictly positive..2016, Tatsuo Nishitani, “On the Cauchy problem for differential operators with double characteristics, transition from effective to non-effective characteristics”, in arXiv: