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Issue 1
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Front matter
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Table of Contents
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Article: Weak commutativity, virtually nilpotent groups, and Dehn functions
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1
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Article: Rigidity and flexibility of isometric extensions
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39
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Article: Trace field degrees of Abelian differentials
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81
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Article: Non-planarity of Markoff graphs mod p
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111
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Article: Extensions of Veech groups II : hierarchical hyperbolicity and quasi-isometric rigidity
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149
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Erratum: Corrigendum to "Lagrangian cobordisms and Lagrangian surgery"
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229
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Back matter
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Issue 2
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Front matter
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Table of Contents
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Article: On the asymptotic growth of Birkhoff integrals for locally Hamiltonian flows and ergodicity of their extensions
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231
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Article: Area and Gauss-Bonnet inequalities with scalar curvature
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355
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Article: Commensurationg HNN-extensions : hierarchical hyperbolicity and biautomaticity
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397
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Back matter
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