2014
DOI: 10.1017/jsl.2013.22
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An Independence Theorem for Ntp2 Theories

Abstract: Abstract. We establish several results regarding dividing and forking in NTP 2 theories.We show that dividing is the same as array-dividing. Combining it with existence of strictly invariant sequences we deduce that forking satisfies the chain condition over extension bases (namely, the forking ideal is S1, in Hrushovski's terminology). Using it we prove an independence theorem over extension bases (which, in the case of simple theories, specializes to the ordinary independence theorem). As an application we s… Show more

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Cited by 13 publications
(12 citation statements)
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“…We also show that if a and b have the same Lascar type, then the Lascar distance between a and b is less or equal to two. We see in Remark 4.43 that in the case of PRC bounded fields the Amalgamation Theorem (Theorem 3.21) implies the independence theorem for NTP 2 theories showed by Chernikov and Ben Yaacov in [10].…”
Section: Acknowledgments 50 1 Introductionmentioning
confidence: 63%
“…We also show that if a and b have the same Lascar type, then the Lascar distance between a and b is less or equal to two. We see in Remark 4.43 that in the case of PRC bounded fields the Amalgamation Theorem (Theorem 3.21) implies the independence theorem for NTP 2 theories showed by Chernikov and Ben Yaacov in [10].…”
Section: Acknowledgments 50 1 Introductionmentioning
confidence: 63%
“…. Moreover,h 1ā and h 2ā are both H -independent by Proposition 2.5 (2). Hence tp T (h 1ā ) = tp T (h 2ā ) by Lemma 2.6.…”
Section: Claim 210 For Anyhmentioning
confidence: 81%
“…In this paper, we shall follow the definition given in . (The same notion is called strongly indiscernible array in .) Definition We may view the Cartesian product ω×ω as a model in the language scriptL ar :={<1,<2} where < 1 and < 2 are binary relation symbols interpreted in ω×ω as follows: (a,b)<1(c,d)a<c(a,b)<2(c,d)(a=c)(b<d)Given a set of tuples A:={truea¯μμω×ω} where all a¯μ have the same arity, …”
Section: Tp2 Burden and Indiscernible Arraysmentioning
confidence: 99%
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