7 research outputs found
Lp Fourier multipliers on compact Lie groups
In this paper we prove Lp multiplier theorems for invariant and non-invariant
operators on compact Lie groups in the spirit of the well-known
Hormander-Mikhlin theorem on Rn and its variants on tori Tn. We also give
applications to a-priori estimates for non-hypoelliptic operators. Already in
the case of tori we get an interesting refinement of the classical multiplier
theorem.Comment: 22 pages; minor correction
Elements of Potential Theory on Carnot Groups
We propose and study elements of potential theory for the sub-Laplacian on homogeneous Carnot groups. In particular, we show the continuity of the single-layer potential and establish Plemelj-type jump relations for the double-layer potential. As a consequence, we derive a formula for the trace on smooth surfaces of the Newton potential for the sub-Laplacian. Using this, we construct a sub-Laplacian version of Kac’s boundary value problem
Assessing mNIS+7Ionis and international neurologists' proficiency in a familial amyloidotic polyneuropathy trial
INTRODUCTION: Polyneuropathy signs (Neuropathy Impairment Score, NIS), neurophysiologic tests (m+7Ionis ), disability, and health scores were assessed in baseline evaluations of 100 patients entered into an oligonucleotide familial amyloidotic polyneuropathy (FAP) trial. METHODS: We assessed: (1) Proficiency of grading neurologic signs and correlation with neurophysiologic tests, and (2) clinometric performance of modified NIS+7 neurophysiologic tests (mNIS+7Ionis ) and its subscores and correlation with disability and health scores. RESULTS: The mNIS+7Ionis sensitively detected, characterized, and broadly scaled diverse polyneuropathy impairments. Polyneuropathy signs (NIS and subscores) correlated with neurophysiology tests, disability, and health scores. Smart Somatotopic Quantitative Sensation Testing of heat as pain 5 provided a needed measure of small fiber involvement not adequately assessed by other tests. CONCLUSIONS: Specially trained neurologists accurately assessed neuropathy signs as compared to referenced neurophysiologic tests. The score, mNIS+7Ionis , broadly detected, characterized, and scaled polyneuropathy abnormality in FAP, which correlated with disability and health scores. Muscle Nerve 56: 901-911, 2017
Modulation spaces and nonlinear evolution equations
We survey some recent progress on modulation spaces and the well-posedness
results for a class of nonlinear evolution equations by using the
frequency-uniform localization techniques.Comment: to appear in Evolution Equations of Hyperbolic and Schr\"odinger
Type, Progress in Mathematics, Vol.301, Springer, 201