François G. Dorais

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Name François G. Dorais
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Location Ann Arbor, MI
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I'm a postdoc at the University of Michigan. My areas of interest are mostly in logic, primarily reverse mathematics and set theory, but I dabble in everything else too...
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14
Reductio ad absurdum or the contrapositive?
14
Does Con(ZF) imply Con(ZF + Aut C = Z/2Z)?
12
Using consistency to create new axioms in set theory
11
“Interesting” properties of sets of natural numbers
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An ubiquitous pattern of questions
11
Which spaces are inverse limits of discrete spaces ?
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Propositional Logic, First-Order Logic, and Higher-Order Logics
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When 2^a = 2^b implies a=b (a,b cardinals)
10
Goedelizability and decidability of a property of Peano formulas
10
Which are the rigid suborders of the real line?
8
Which mathematicians have influenced you the most?
8
In model theory, does compactness easily imply completeness?
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On statements independent of ZFC + V=L
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Naturally definable sets of natural numbers (2): Can the circle be broken?
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What is the general opinion on the Generalized Continuum Hypothesis?
7
Where are we working when we prove metamathematical theorems?
7
What’s your favorite equation, formula, identity or inequality?
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Which topological spaces admit a nonstandard metric?
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Can you prove equivalence without being able to calculate it?
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Why should algebraic objects have naturally associated topological spaces? (Formerly: What is a topological space?)
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product of all F_p, p prime
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Defining ‘free monoid’ without Nat?
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Definable collections without definable members (in ZF)
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Is there a relationship between model theory and category theory?
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Reverse mathematics of (co)homology?
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First-order UFD (factorial ring) condition / pre-Schreier rings
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Decidability of the Axiom of Choice
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Is the theory of categories decidable?
6
Applications of infinite Ramsey’s Theorem (on N)?
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definition of the set of natural numbers
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