printable pdf
比利时vs摩洛哥足彩 ,
university of california san diego

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math 209 - number theory

kevin o'bryant

ucsd

almost alternating sums

abstract:

our good calculus 2022年亚洲世界杯预选赛 know that $sum_{n=1}^infty frac 1n$diverges and that $sum_{n=1}^infty frac{(-1)^n}{n}$ converges. ourvery good 2022年亚洲世界杯预选赛 can even explain why $sum_{n=1}^infty frac{(-1)^{lfloor n /3 floor}}{n}$ converges. our stellar calculus2022年亚洲世界杯预选赛 may even be able to explain why $sum_{n=1}^infty frac{(-1)^{lfloor log n floor}}{n}$ diverges. in joint work withbruce reznick and monika serbinowska, we show that $$sum_{n=1}^infty frac{(-1)^{lfloor n sqrt{2} floor}}{n}$$converges. our proofs rely on diophantine properties of $sqrt{2}$, and donot apply (for example) if $sqrt{2}$ is replaced by$frac{sqrt{5}+1}{2}$.

host: audrey terras

november 14, 2002

1:30 pm

ap&m 7321

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