662 research outputs found
On -gaps between zeros of the Riemann zeta-function
Under the Riemann Hypothesis, we prove for any natural number there exist
infinitely many large natural numbers such that
and
for
explicit absolute positive constants and , where
denotes an ordinate of a zero of the Riemann zeta-function on the critical
line. Selberg published announcements of this result several times but did not
include a proof. We also suggest a general framework which might lead to
stronger statements concerning the vertical distribution of nontrivial zeros of
the Riemann zeta-function.Comment: to appear in the Bulletin of the London Mathematical Societ
Denise Knighton Retires After Almost 40 Years
UM associate registrar leaves legacy of dedicatio
Gold Nanoparticles: Core Conversion of Au144(SCH2CH2Ph)60 to Au99(SPh-CH3)42 Using Aromatic Thiolate Ligands and Crystallization of Au99(SPh-CH3)42
The purpose of this thesis is to synthesize Au144(SCH2CH2Ph)60 using a two-step synthesis reaction, and then using this product to conduct a core conversion from Au144(SCH2CH2Ph)60 to Au99(SPh-CH3)42. The Au99(SPh-CH3)42 product will then be used to attempt to form crystals using five different crystal set-up methods. Au144(SCH2CH2Ph)60 is made with aliphatic thiolate ligands, and when it is placed in a mixture containing excess para-methyl benzenethiol, it undergoes a core-conversion to Au99(SPh-CH3)42. This is a relatively new nanoparticle, and it is being used to hopefully form crystals which can, in turn, give information about its structure. The crystallization was unsuccessful with the five different set-ups employed, but the Au99(SPh-CH3)42 structure is still being studied with the hopeful crystal structure being found soon
Banning Books Threatens Freedom of Speech
UM librarian shares concerns about protecting diversity of opinion and perspectiv
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