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/sci/ - Science & Math

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8693552 No.8693552 [Reply] [Original]

/sci/, I'm reading this article:
pastebin WvAdkEri (system thinks it's spam when I post the arxiv link)

On page 3, section 2, the author defines A as a L x P matrix. He then goes on to set A_(2i-1,k+P) = 1.

How is this possible if A only has P columns? Am I missing something?