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The Sum of Reciprocals of Polygonal Numbers: A Spreadsheet Based Illustration

open access: yesSpreadsheets in Education
This pedagogic note considers the sum of reciprocals of polygonal numbers. Closed form expressions of the sum are currently available for twelve specific cases, from triangles to 26-sided polygons. Several of these expressions are from featured solutions
Clarence C. Y. Kwan
doaj  

Intertwining Operators Beyond the Stark Effect. [PDF]

open access: yesCommun Math Phys
Fanelli L   +4 more
europepmc   +1 more source

Engineering high-Q superconducting tantalum microwave coplanar waveguide resonators for compact coherent quantum circuit. [PDF]

open access: yesSci Rep
Poorgholam-Khanjari S   +7 more
europepmc   +1 more source

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