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Injectivity radius bound of Ricci flow with positive Ricci curvature and applications
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作者 Li MA Anqiang ZHU 《Frontiers of Mathematics in China》 SCIE CSCD 2013年第5期1129-1137,共9页
We study the injectivity radius bound for 3-d Ricci flow with bounded curvature. As applications, we show the long time existence of the Ricci flow with positive Ricci curvature and with curvature decay condition at i... We study the injectivity radius bound for 3-d Ricci flow with bounded curvature. As applications, we show the long time existence of the Ricci flow with positive Ricci curvature and with curvature decay condition at infinity. We partially settle a question of Chow-Lu-Ni [Hamilton's Ricci Flow, p. 302]. 展开更多
关键词 Injectivity radius bound Ricci flow positive Ricci curvature global solution
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RANK OF A CLASS OF AUTOCORRELATION MATRIXES IN SPECTRAL ESTIMATION
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作者 程乾生 《Chinese Science Bulletin》 SCIE EI CAS 1991年第1期72-74,共3页
Let x_l be a real stationary random signal with mean zero and autocorrelation
关键词 STATIONARY RANDOM signal RANK of AUTOCORRELATION MATRIX EXPONENTIAL model.
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