Mathematics
Levon Haykazyan's user avatar
Levon Haykazyan's user avatar
Levon Haykazyan's user avatar
Levon Haykazyan
  • Member for 12 years, 6 months
  • Last seen more than 4 years ago
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All Questions Answers
Score Newest
answer
22
100 prisoners and a lightbulb
Mar 4, 2012
answer
20
Is $\Bbb R$ definable in $(\Bbb C,0,1,+,*,\exp)$?
Jun 12, 2013
answer
14
Elementary equivalence of free groups
Jul 16, 2014
answer
14
If a relation is symmetric and transitive, will it be reflexive?
Sep 16, 2011
answer
12
Research in plane geometry or euclidean geometry
Nov 27, 2011
answer
11
Proving a function is continuous for all real numbers
Dec 5, 2011
answer
9
Is there any countable ordinal number which has a member undefinable?
Jul 16, 2013
answer
9
Second-order logic - monadic version and Henkin semantics
May 12, 2012
answer
8
Is Entscheidungsproblem in Co-RE? And Proof if it is.
Feb 12, 2012
answer
8
Notation for elements of a vector
Dec 11, 2011
Top network posts
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12
Differences between logic with and without equality
11
Löwenheim-Skolem for many-sorted theories
10
Two cardinal obstructions
9
Can a nontrivial $\phi \in Gal(\bar K /\bar k )$ preserve all algebraically closed subfields?
6
Groups and pregeometries

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