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                  Issue 1
                    
                
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                  Front matter
                
                
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                  Article: Essential dimension of the spin groups in characteristic 2
                
                
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                1
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                  Article: The L2-torsion function and the Thurston norm of 3-manifolds
                
                
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                21
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                  Article: Generalized triangle groups, expanders, and a problem of Agol and Wise
                
                
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                53
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                  Article: Group representations in the homology of 3-manifolds
                
                
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                67
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                  Article: The zero norm subspace of bounded cohomology of acylindrically hyperbolic groups
                
                
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                89
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                  Article: A Poincaré-Bendixson theorem for translation lines and applications to prime ends
                
                
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                141
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                  Article: Locally compact groups acting on trees, the type I conjecture and non-amenable von Neumann algebras
                
                
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                185
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                  Back matter
                
                
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                220
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                  Issue 2
                    
                
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                  Front matter
                
                
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                  Article: A lower bound for the rank of a universal quadratic form with integer coefficients in a totally real number field
                
                
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                221
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                  Article: Statistical distribution of the Stern sequence
                
                
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                241
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                  Article: Positively ratioed representations
                
                
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                273
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                  Article: Hyperbolic components of rational maps : quantative equidistribution and counting
                
                
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                347
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                  Article: The maximum number of strokes for genus two Riemann surfaces with abelian differentials
                
                
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                399
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                  Back matter
                
                
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                438
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                  Issue 3
                    
                
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                  Front matter
                
                
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                  Article: Counterexamples to the complement problem
                
                
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                439
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                  Article: Motives of isogenous K3 surfaces
                
                
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                445
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                  Article: Asymtotics of analytic torsion for hyperbolic three-manifolds
                
                
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                459
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                  Article: Fourier optimization and prime gaps
                
                
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                533
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                  Article: Dynamically exotic contact spheres in dimensions ≥ 7
                
                
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                569
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                  Article: A local characterization of Kazhdan projections and applications
                
                
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                623
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                  Back matter
                
                
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                661
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                  Issue 4
                    
                
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                  Front matter
                
                
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                  Article: Aut-invariant norms and Aut-invariant quasimorphisms on free and surface groups
                
                
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                661
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                  Article: On rational cuspidal plane curves and the local cohomology of Jacobian rings
                
                
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                689
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                  Article: Spectral and Hodge theory of "Witt" incomplete cusp edge spaces
                
                
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                701
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                  Article: Some analytic aspects of automorphic forms on GL(2) of minimal type
                
                
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                767
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                  Article: Middle dimensional symplectic rigidity and its effect on Hamiltonian PDEs
                
                
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                803
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                  Article: Characterization of generic projective space bundles and algebraicity of foliations
                
                
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                833
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                  Article: Rigidity of Busemann convex Finsler metrics
                
                
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                855
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                  Article: Lengths of closed geodesics on random surfaces of large genus
                
                
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                869
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                  Table of Contents
                
                
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                  Index: Author Index
                
                
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                  Back matter
                
                
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