from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The diagonal of a matrix that leads from top-right towards bottom-left
In these conditions, could the rows of T be reordered so that the resulting diagonal and antidiagonal were rational numbers?
If it were possible to reorder the rows of T in such a way that a rational antidiagonal could be defined, then we would have two contradictory results: the set Q of rational numbers would and would not be denumerable
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