I am Feng Qi, a professor in mathematics. Welcome you!
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A short CV for Feng Qi Feng Qi obtained his full-time PhD degree of science in mathematics from University of Science and Technology of China. At present he is a professor in mathematics at Tianjin Polytechnic University. Qi was a professor … Continue reading
Sharing Information for “Closed forms for derangement numbers in terms of the Hessenberg determinants”
Sharing Information for “Closed forms for derangement numbers in terms of the Hessenberg determinants” Dear Author, Congratulations on publishing “Closed forms for derangement numbers in terms of the Hessenberg determinants” in Revista de la Real Academia de Ciencias Exactas, Físicas … Continue reading
Some papers published in Journal of Mathematical Analysis by Feng Qi Feng Qi and Bai-Ni Guo, Some properties of the average numbers of comparisons used by the quicksort, Journal of Mathematical Analysis 8 (2017), no. 2, 123–128.