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The definition tag is used in situations where the question is either about how some term or concept is defined or where the validity of an answer depends on a subtle definition of some term or concept used in the question.

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What is a fuzzy space?

Fuzzy spaces can refer to a few things, but mainly they refer to finite-dimensional spectral triples, specifically noncommutative ones. So to understand the idea behind them it is useful to understa …
Paul Druce's user avatar