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# 2014

Years: 2009 2010 2011 2012 2013 - 2014 - 2015 2016 2017 2018 2019

Events

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 Harmonic series (mathematics) ... diverges to infinity (although that is much harder to prove; see here). The alternating harmonic series converges however: [itex]\sum_{k = 1}^\infty ...