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 @:ihavenomouth:  @eidolon did they use Ramanujan's scribble that just inserts a space between the +'s and does bullshit with it? 
 @​ @eidolon they start by proving that 1-1+1-1+1-1+...=1/2, by padding it with zeroes (it's divergent, you can't do this) and adding to itself (you can't do this), then repeating the same trick with other divergent series. The result they get is meaningless.