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J.-E. Pin's user avatar
J.-E. Pin's user avatar
J.-E. Pin
  • Member for 10 years, 8 months
  • Last seen more than a week ago
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Research interests. Algebraic theory of automata and languages. In particular, connections with semigroup theory, combinatorics, logic and topology.

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Top posts
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9
What are the main structure theorems on finitely generated commutative monoids?
Aug 12, 2013
answer
8
Collatz conjecture— finite state machine transducer construction, origination?
Aug 6, 2013
question
6
The power of Archimedean spirals: is there an algebraic characterization of Archimedean numbers?
May 24, 2021
answer
6
Regular languages and the pumping lemma
Aug 6, 2013
answer
6
Sets of natural numbers such that sums of a bounded number of its elements form a semigroup
Apr 16, 2015
question
5
Is it decidable whether the support of a rational $\mathbb{Z}$-series is a regular language?
Aug 18, 2013
question
4
In the category of uniform spaces, is the completion of a quotient map also a quotient map?
May 11, 2015
answer
4
Generalising the adherence operator and its closure properties with regard to regular (rational) languages
Jan 10, 2014
answer
3
Ordering on words
Oct 24, 2013
answer
2
What is the relation between the number syntactic congruence classes, and the number of Nerode relation classes?
Aug 10, 2013
Top network posts
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48
Why is Lebesgue so often spelled "Lebesque"?
40
I get a wrong determinant - why?
31
Why does intersection always preserve "closed" structures?
26
Complexity zoo for unary languages
21
How to create DFA from regular expression without using NFA?