Description: The Cauchy condensation test. If a ( k ) is a decreasing sequence of nonnegative terms, then sum_ k e. NN a ( k ) converges iff sum_ n e. NN0 2 ^ n x. a ( 2 ^ n ) converges. (Contributed by Mario Carneiro, 18-Jul-2014) (Proof shortened by AV, 10-Jul-2022)
Ref | Expression | ||
---|---|---|---|
Hypotheses | climcnds.1 | |
|
climcnds.2 | |
||
climcnds.3 | |
||
climcnds.4 | |
||
Assertion | climcnds | |