Talk:Square pyramidal number: Difference between revisions

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Note that the inverse limit (Σ fom zero to n) diverges, reproducing the sequence of natural numbers. <small><span class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[User:Ancora Luciano|Ancora Luciano]] ([[User talk:Ancora Luciano|talk]] • [[Special:Contributions/Ancora Luciano|contribs]]) 15:25, 18 August 2013 (UTC)</span></small><!-- Template:Unsigned --> <!--Autosigned by SineBot-->
 
:::Can anyone tell me if it's new? --[[User:Ancora Luciano|Ancora Luciano]] ([[User talk:Ancora Luciano|talk]]) 07:41, 26 May 2013 (UTC)
 
 
::::The induction principle enshrines the validity of this "theorem". Its algebraic proof would be an exciting challenge between the insiders--[[Special:Contributions/79.22.249.176|79.22.249.176]] ([[User talk:79.22.249.176|talk]]) 15:56, 22 July 2013 (UTC)
 
== Sum of the first ''n'' squares (geometrical proof) ==