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math.CA2024
Two-sided bell-shaped sequences
Mateusz Kwaśnicki, Jacek Wszoła
A nonnegative real function f is bell-shaped if it converges to zero at plus and minus infinity and the nth derivative of f changes sign n times for every n = 0, 1, 2, ... Similarl…
math.CA2022
Bell-shaped sequences
Mateusz Kwaśnicki, Jacek Wszoła
A nonnegative real function is said to be bell-shaped if it converges to zero at and the th derivative of changes sign times for every $n = 0, 1, 2, \ldo…