Department of

# Mathematics

Seminar Calendar
for events the day of Thursday, January 18, 2018.

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events for the
events containing

Questions regarding events or the calendar should be directed to Tori Corkery.
    December 2017           January 2018          February 2018
Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa
1  2       1  2  3  4  5  6                1  2  3
3  4  5  6  7  8  9    7  8  9 10 11 12 13    4  5  6  7  8  9 10
10 11 12 13 14 15 16   14 15 16 17 18 19 20   11 12 13 14 15 16 17
17 18 19 20 21 22 23   21 22 23 24 25 26 27   18 19 20 21 22 23 24
24 25 26 27 28 29 30   28 29 30 31            25 26 27 28
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Thursday, January 18, 2018

11:00 am in 241 Altgeld Hall,Thursday, January 18, 2018

#### Combinatorial aspects of Levinson's method

###### Nicolas Robles (UIUC Math)

Abstract: The celebrated theorem of Levinson (1974) states that more than 1/3 of the non-trivial zeros of the Riemann zeta-function are on the critical line. This result has been improved during the last 40 years by employing linear and first order terms of a mollifier as well as by using Kloostermania techniques for the error terms. In this work, we delineate how to improve all degrees of the most natural and powerful Dirichlet series (producing an arbitrarily perfect mollification) and we also present the best error terms available with our current technology of exponential sums by elucidating a conjecture of S. Feng. A new and modest % record is thereby achieved. Joint work with Kyle Pratt, Alexandru Zaharescu and Dirk Zeindler.

4:00 pm in 245 Altgeld Hall,Thursday, January 18, 2018