Apr 11: Universal quadratic forms and indecomposable integers (Vita Kala)

Apr 18: Quantum chaos, Fibonacci numbers and the Riemann zeta-function (Valentin Blomer)

Apr 25: Shifted convolution of divisor functions (Berke Topacogullari)

May 2: Triple product formula and applications to subconvexity and mass equidistribution (Yueke Hu)

May 9: tba (Dan Loughran)

May 16: Pentecost Monday - no seminar

May 23: tba (Korneel Debaene)

May 30: tba (Gerd Hofmeister)

June 6: 8. Göttingen-Hannover Number Theory Workshop

June 13:

June 20: tba (Vlad Crisan)

June 27:

July 4:

July 11:

Nov 2: Class groups in p-cuclotomic fields (a conjecture of Iwasawa and Leopoldt) (Preda Mihăilescu)

Nov 9: Sums of two square of sums of two squares (Rebecca Jakob)

Nov 16: Sieving for completely split primes (Korneel Debaene)

Nov 23: Soficity, exponential maps and recurrence (Harald Helfgott)

Dec 7: 5. Göttingen-Hannover Number Theory Workshop

Dec 21: On a remark of G. H. Hardy (Samuel Patterson)

Jan 11: The Calkin-Wilf tree and its generalizations (Melvin Nathanson)

Jan 18: Random Thue equations (Rainer Dietmann)

Jan 25: Squares representable by quartic forms (Stefan Baur)

Feb 1: 6. Göttingen-Hannover Number Theory Workshop

Feb 8: Rational quadrilaterals and tetrahedra - Tales of forgotten Genius (Samuel Patterson)

Apr 24: 3. Göttingen-Hannover Number Theory Workshop

Apr 27: Subconvexity for L-functions on GL(3), II (Jack Buttcane)

May 4: A Burgess-type subconvex bound for GL(2) x GL(1) L-functions (Péter Maga)

May 11: Modular curves and the class number one problem (Vlad Crisan)

May 18: Vinogradov's mean value theorem: the quartic case (Trevor Wooley)

May 25: Pentecost Monday - no seminar

Jun 1: Complification II (Jörg Brüdern)

Jun 8: Complification III (Jörg Brüdern)

Jun 15: Kummerian approaches for the Fermat-Catalan equation (Preda Mihăilescu)

Jun 22: The third moment of symmetric square L-functions (Benjamin Sprung)

Jun 29: Subconvexity for multiple Dirichlet series (Alex Dahl)

Jul 6: Bounds for arithmetic eigenfunctions (Simon Marshall)

Jul 9: 4. Göttingen-Hannover Number Theory Workshop

Jul 13: Rational points on quartic hypersurfaces (Oscar Marmon)

Nov 3: Quadratic diophantine equations over number fields (Lutz Helfrich)

Nov 10: Number of self-dual automorphic representations on GL(N) and depth preservation (Vita Kala)

Nov 17: Searching for rational points on varieties over global fields (Lenny Fukshansky)

Nov 21: 1. Göttingen-Hannover Number Theory Workshop

Nov 24: A global approach to generalized Iwasawa invariants (Sören Kleine)

Dec 1: The spectral Kuznetsov formula for SL(3, Z) (Jack Buttcane)

Dec 8: Resonances (Anke Pohl)

Dec 15: Hilbert cubes in arithmetic sets (Rainer Dietmann)

Jan 5: Eisenstein series for congruence subgroups of GL(3) (Deniz Balakci)

Jan 12: A converse theorem for L-functions of degree 2 (Alberto Perelli)

Jan 19: Forms in many variables and differing degrees (Julia Brandes)

Jan 26: Minimal representations (Samuel Patterson)

Feb 2: Higher order expansions and the circle method (Damaris Schindler)

Feb 6: 2. Göttingen-Hannover Number Theory Workshop

May 5: Sums and differences of powerfree numbers (Julia Brandes)

May 12: The divisor function on average (Lasse Grimmelt)

May 19: Sparse variance for k-free numbers in arithmetic progressions (Fabian Dehnert)

May 26: Diophantine equation in moderately many variables (Oscar Marmon)

Jun 2: L-functions and Kloosterman sums (Valentin Blomer)

Jun 9: Pentecost Monday - no seminar

Jun 16: Quadratic forms with congruence conditions over number fields (Lutz Helfrich)

Jun 23: A variance for k-free twins (Tomos Parry)

Jun 30: Test functions in the trace formula: analysis and combinatorics (Valentin Blomer)

Jul 7: A matrix counting problem (Péter Maga)

Jul 21: Sums of two squares coprime in pairs (Jörg Brüdern)

Aug 20: n-level densities of Artin L-functions (Henry Kim)

Nov 4: A non-commutative lattice point problem (Valentin Blomer)

Nov 11: Local behaviour of Iwasawa invariants (Sören Kleine)

Nov 13: Public colloquium: spectral methods in number theory Nov 18: Sums of two squares in thin sequences (Jörg Brüdern)

Nov 25: A multidimensional version of Birch's theorem (Julia Brandes)

Dec 2: Quartic exponential sums d'après P. E. Herman (Samuel Patterson)

Dec 9: Asymptotic formulae for moments of L-functions (Ian Petrow)

Dec 16: Periods of L-functions (Valentin Blomer)

Jan 6: Linear algebra in sums of three cubes (Jörg Brüdern)

Jan 13: The density of twins of k-free numbers II (Oscar Marmon)

Jan 20: The transfer operator method (Anke Pohl)

Jan 27: Smoothness and discrete logarithm (Razvan Barbulescu)

Feb 3: Metaplectic theta functions over rational function fields (Samuel Patterson)

Apr 22: Zeros of p-adic forms (Jan Dumke)

May 6: Odd and even Maass cusp forms for Hecke triangle groups, and the billiard flow (Anke Pohl)

May 20: Pentecost Monday - no seminar

June 3: Search bounds for zeros of rational cubic forms (Lutz Helfrich)

June 17: On the 4-norm of an automorphic form in the level aspect I (Rizwan Khan)

June 24: On the 4-norm of an automorphic form in the level aspect II (Jack Buttcane)

July 1: Primality testing using CIDE (Jens Franke)

Oct 29: Anisotropic diagonal forms (Jörg Brüdern)

Nov 5: The average of L4-norms of holomorphic cusp forms (Rizwan Khan)

Nov 12: Distributions of Frobenius in GL-extensions generated by generic Drinfeld modules (Alina Cojocaru)

Nov 19: The density of twins of k-free numbers (Oscar Marmon)

Nov 26: A new view of primitivity of Dirichlet characters (Nathan Jones)

Dec 3: Frobenius fields for elliptic curves (Alina Cojocaru)

Dec 10: Towards an arithmetic Riemann-Roch theorem for weighted pointed stable curves (Anna von Pippich)

Dec 17: Forms in many variables and p-adic solubility (Julia Brandes)

Jan 7: Subconvexity for additive equations (Jörg Brüdern)

Jan 14: A Sato-Tate law for GL(3) (Valentin Blomer)

Jan 21: Anomalous intersections in diophantine geometry (Francesco Veneziano)

Feb 4: Sums of GL(3) Kloosterman sums (Jack Buttcane)

Feb 28: Short exponential sums with Fourier coefficients of cusp forms (Anne-Maria Ernvall-Hytönen)

Apr 30: The arithmetic of squareful numbers (Valentin Blomer)

May 7: Sub-Weyl subconvexity and short p-adic exponential sums (Djordje Milićević)

May 14: The subconvexity problem for double Dirichlet series (Benoît Louvel)

May 21: Weak Leopoldt (Preda Mihăilescu)

May 28: Pentecost Monday - no seminar

Jun 4: Conference "Analytic methods for Diophantine equations"

Jun 11: Kloosterman sums in residue classes (Valentin Blomer)

Jun 18: Spacings in arithmetic sequences (Rizwan Khan)

Jun 25: Arithmeticity for periods of automorphic forms (A. Raghuram)

Jul 2: Diophantine representation in thin sequences (Stefan Baur)

Jul 9: Artin's primitive root conjecture and related problems (Christopher Ambrose)

Jul 16: A transfer operator approach to period functions for Maass cusp forms (Anke Pohl)

Jul 20: Harmonic analysis and amplification on locally symmetric spaces (Simon Marshall)

Nov 7: A paucity estimate for Newton sums of odd degree (Olivier Robert)

Nov 14: Smooth values of binary forms (Valentin Blomer)

Nov 21: On a theorem attributed to myself (Samuel Patterson)

Nov 28: An algebraic Sato-tate group and Sato-Tate conjecture (Grzegorz Banaszak)

Dec 5: On exponential sums with coefficients of certain Dirichlet series (Stephan Baier)

Dez 12: The capitulation problem in class field theory (Tobias Bembom)

Dez 19: Large sieve inequalities for the power residue symbol (Benoît Louvel)

Jan 9: The first moment of Salie sums (Benoît Louvel)

Jan 16: Regular irregularities in the distribution of primes (Jörg Brüdern)

Jan 23: ABC for quintic Gauss sums (Samuel Patterson)

Jan 30: Atkin-Lehner theory for GL(n) (Deniz Balakci)

Feb 6: The L4-norm of holomorphic cusp forms (Rizwan Khan)

Apr 18: Rational points on quartic surfaces (Markus Hanselmann)

Apr 25: Easter Monday - no seminar

May 2: Efficient congruencing (Trevor Wooley)

May 9: Hecke eigenvalues at Piatetski-Shapiro primes (Stephan Baier)

May 16: Rational points of del Pezzo surfaces of degree 2 (Stephan Baier)

May 23: Quadratic polynomials represented by norms (Tim Browning)

May 30: Simultaneous non-vanishing of GL(3) x GL(2) and GL(3) L-functions (Rizwan Khan)

June 6: Newton sums and paucity (Jörg Brüdern)

June 8: Primes in arithmetic progressions to spaced moduli (Roger Baker)

June 13: Pentecost Monday - no seminar

June 20: p-adic L-functions and Iwasawa theory (Sören Kleine)

July 4: Trace formulas in number theory I: GL(1) and GL(2) (Valentin Blomer)

July 11: Trace formulas in number theory II: GL(3) (Valentin Blomer)

Nov 8: Limit-periodic functions II (Jörg Brüdern)

Nov 15: Limit-periodic functions III (Jörg Brüdern)

Nov 22: Universality of L-functions (Marc Palm)

Nov 29: Double Dirichlet L-series (Valentin Blomer)

Dec 6: On the order of vanishing of modular L-functions at the critical point (Deniz Balakci)

Dec 13: Sup-norms of eigenfunctions on arithmetic manifolds (Valentin Blomer)

Dec 20: Manin's conjecture for multi-linear forms (Jörg Brüdern)

Jan 10: Group ring actions and capitulation theory (Christopher Ambrose)

Jan 17: Shifted multiple Dirichlet series and moments of L-series (Jeff Hoffstein)

Jan 24: Class numbers of cyclotomic fields (Sören Kleine)

Jan 31: The arithmetic of cubic forms (Stefan Baur)

Feb 7: Hooley's Delta-function (Jörg Brüdern)