D'Alembert's ratio test

GPTKB entity

Statements (18)
Predicate Object
gptkbp:instanceOf gptkb:mathematics
gptkbp:alsoKnownAs ratio test
gptkbp:appliesTo infinite series
series with complex terms
series with positive terms
gptkbp:category mathematical analysis
gptkbp:criteria If limsup |a_{n+1}/a_n| > 1, the series diverges
If limsup |a_{n+1}/a_n| < 1, the series converges absolutely
If limsup |a_{n+1}/a_n| = 1, the test is inconclusive
gptkbp:field gptkb:mathematics
gptkbp:firstPublished 1768
https://www.w3.org/2000/01/rdf-schema#label D'Alembert's ratio test
gptkbp:namedAfter gptkb:Jean_le_Rond_d'Alembert
gptkbp:relatedTo gptkb:Cauchy_condensation_test
root test
gptkbp:usedFor testing convergence of series
gptkbp:bfsParent gptkb:Kummer's_criterion
gptkbp:bfsLayer 8