A proof from the book, perchance
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DOI: 10.1007/s10801-020-01007-5
Abstract: The fact that the groups $${\mathbb {Z}}_{2^m} \times {\mathbb {Z}}_{2^m}$$ Z 2 m × Z 2 m contain difference sets was first established by induction by Jim Davis in his Virginia dissertation of 1987. Later… read more here.
Keywords: book perchance; difference; difference sets; proof book ... See more keywords