RRB Group D Syllabus 2026: The Railway Recruitment Board (RRB) has announced 22,000 vacancies for RRB Group D Level-1 posts under CEN 09/2025. Aspirants preparing for these positions should be well ...
Abstract: In this paper, Wielandt's inequality for classical channels is extended to quantum channels. That is, an upper bound to the number of times a channel must be applied, so that it maps any ...
The series is edited by the head coaches of China's IMO National Team. Each volume, catering to different grades, is contributed by the senior coaches of the IMO National Team. The Chinese edition has ...
1. The Pythagorean Theorem -- 2. Ceva's Theorem -- 3. Perpendicular Bisectors; Concurrence -- 4. The Nine-Point Circle and Euler Line -- 5. The Taylor Circle -- 6. Coordinate Systems with Respect to a ...
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