Just the last days I learned about the *Grothendieck* topology, which is a moral equivalent of an open covering in a category.

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(Physicists would put an extra point at 9, and *Grothendieck* himself would put an extra point at 57.)

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One of the best *Grothendieck* obits I've seen in terms of making his work comprehensible to us mere mortals.

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I can't speak to topos theory (which I have not really studied, and understand only in terms of a link between category theory and logic), but I can say a few words about *grothendieck* topologies.

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*Grothendieck* topologies are a way to recover this nice topology in the classical case, an also to fix the topology more generally so that one can do algebraic topology with schemes and get useful results.

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*Grothendieck* topologies can be defined for arbitrary categories and some of the computations in schemes only uses this categorical data, which allows one to think of a category with a topology as a (collection of) geometric object(s).

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David Mumford did an excellent obituary of *Grothendieck* for Nature.

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lowballing physicists never gets old and poor *grothendieck*.

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Ultimately, *Grothendieck*.

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is *grothendieck* locked in as one of them?

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Cool, but where do *Grothendieck* topologies and topos theory come into play?

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Why are people so obsessed with ranking people against *Grothendieck*?

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In my opinion, Godel and Turing were both greater mathematicians than *Grothendieck*, and probably von Neumann too.

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*Grothendieck* for sure.

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The sheaves used are over Lawvere-Tierney topologies, which are more general than *Grothendieck* topologies.

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So, you do think that Einstein, *Grothendieck* and Freud (to name a few) faked their accomplishments?

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Einstein, *Grothendieck*, Freud ... you can't fake their achievements.

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Perhaps you should take a completely different route and write about *Grothendieck*.

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Interestingly, *Grothendieck* grew disillusioned with math and mathematicians.

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*Grothendieck* died late last year, very recently.

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There are some beautiful pieces written about *Grothendieck*.

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This can be seen in the legend of the so-called “*Grothendieck* prime”.

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In a mathematical conversation, someone suggested to *Grothendieck* that they should consider a particular prime number.

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“You mean an actual number?” *Grothendieck* asked.

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Algebraic geometry post-*Grothendieck*.

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i vote for *Grothendieck* as well.

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