Mathematics
Tara B's user avatar
Tara B's user avatar
Tara B's user avatar
Tara B
  • Member for 11 years, 9 months
  • Last seen more than a month ago
  • Portugal
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About

I do research on groups, semigroups, and especially interactions between algebra and formal language theory. My non-research interests include combinatorics, elementary number theory and topology.

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Top posts
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All Questions Answers
Score Newest
answer
47
How is the set of all programs countable?
Feb 20, 2013
answer
23
Is this group abelian?
Mar 2, 2013
answer
19
Is there an infinite simple group with no element of order $2$?
May 1, 2012
answer
15
Let $p$ be a prime. Prove that $p$ divides $ab^p−ba^p$ for all integers $a$ and $b$.
Mar 24, 2012
answer
15
What exactly are eigen-things?
Feb 11, 2013
question
13
Why is a matrix $A\in \operatorname{SL}(2,\mathbb{R})$ with $|\operatorname{tr}(A)|<2$ conjugate to a matrix of the following form?
May 15, 2012
answer
13
The free group $F_2$ contains $F_k$
Feb 17, 2013
answer
13
No permutation of $S_4$ satisfying the expression.
Apr 29, 2012
question
9
Name for a function whose image has smaller cardinality than its domain
Mar 2, 2013
answer
9
Name for Cayley graph of a semigroups?
Mar 1, 2012
Top Meta posts
2
2
57
Removal of votes when a user is removed
8
Number of comments to unanswered questions
5
(tutoring) tag proposal
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69
How to deal with an advisor who wants a "friendlier" relationship with me than I do?
38
How to get back on track after falling behind
35
Points to consider when deciding whether to get married during a PhD
30
What to wear on one's shoulders to interviews? (bags, backpacks, etc.)
20
Status of an open problem about semilinear sets

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