Logarithmically concave sequence: Difference between revisions

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'''Remark:''' some authors (explicitly or not) add two further conditions in the definition of log-concave sequences:
* {{math|''a''}} is non-negative
* {{math|''a''}} has no internal zeros; in other words, the [[Support (mathematics)|support]] of {{math|''a''}} is an interval of {{math|'''Z'''}}.
These conditions mirror the ones required for [[Logarithmically_concave_function|log-concave functions]].