[Haskell-cafe] What is a number. (Was: Num instances for 2-dimensional types)

Miguel Mitrofanov miguelimo38 at yandex.ru
Mon Oct 5 12:46:20 EDT 2009

> "Just pairs" have no natural arithmetic upon them.

Exactly my point.

> BTW. the missing term of M.M. is DUAL NUMBERS.

Remembered this already. Thanks anyway.

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