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A 76-year-old man with left internal carotid artery occlusion developed a progressing right hemiparesis. Brain MRI presented reinfarctions in the left anterior border zone and terminal zone in the left deep white matter. Ambulatory blood pressure monitoring showed a decrease in systolic blood pressure by more than 20 mmHg one hour after starting meals,(More)
Let q be a prime or a prime power ≥ 3. The purpose of this paper is to give a necessary and sufficient condition for the existence of an (n, r)-arc in PG(2, q) for given integers n, r and q using the geometric structure of points and lines in PG(2, q) for n > r ≥ 3. Using the geometric method and a computer, it is shown that there exists no (34, 3) arc in(More)
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