David Roberts

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Name David Roberts
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Location Adelaide, Australia
Age 29
Pure mathematician interested in category theory and foundations.
100

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A bestiary of topologies on Sch

oct 3 11 at 5:01 David Roberts 11.7k●2●18●55

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What about stacks of categories in algebraic geometry?

mar 1 11 at 18:32 Torsten Ekedahl 17.9k●1●42●68

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What is the generic poset used in forcing, really?

jan 5 11 at 21:47 Stefan Geschke 10.5k●1●14●37

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How true are theorems proved by Coq?

jun 15 11 at 6:30 joro 4,200●1●10●31

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Answers
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Most memorable titles (2)
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28
Do we have non-abelian sheaf cohomology?
19
What universities have laid off tenured math faculty for financial reasons?
18
What Are Some Naturally-Occurring High-Degree Polynomials?
16
Fundamental group of R^2-Q^2
16
Why are there so many smooth functions?
16
The concept of Duality
13
Manin’s algebraic geometry textbook?
11
Book on mathematical “rigorous” String Theory?
11
The relationship between group cohomology and topological cohomology theories
11
Arguments against large cardinals
11
Why pullback only defined up-to-isomorphism but nevertheless presented as functor?
10
Conjectures in Grothendieck’s “Pursuing stacks”
10
Computing `$\pi_1 S^1$` using groupoids
10
Why need the morphisms to form a set ?
10
Mathematical ideas named after places
10
Decent Texts on Categorical Logic
9
What is the homotopy theory of categories?
9
Grothendieck topology for a non-small category
8
How are the classifying space of $E_8$ and $K(\mathbb{Z},4)$ related?
8
In which situations can one see that topological spaces are ill-behaved from the homotopical viewpoint?
7
frechet manifolds book
7
Singular Homology/Cohomology as a derived functor?
7
what do empty parens symbol mean?
7
What’s the name of this flavor of n-category?
7
Axiom of Replacement in Category Theory
7
Status of Harvey Friedman’s grand conjecture?
7
The higher Van Kampen Theorems and computation of the unstable homotopy groups of spheres
7
What are the most overloaded words in mathematics?
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