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   OriginalPaper Open access 28 January 2022 Pages: 691 - 719

2. Sobolev spaces and \(\nabla \)-differential operators on manifolds I: basic properties and weighted spaces

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   • Victor Nistor

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3. A horizontal Chern–Gauss–Bonnet formula on totally geodesic foliations

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   • Erlend Grong
   • Gianmarco Vega-Molino

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4. A heat flow for the critical Trudinger-Moser functional on a closed Riemann surface

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   • Yunyan Yang

   OriginalPaper 08 February 2022 Pages: 777 - 797

5. Generalised Bianchi permutability for isothermic surfaces

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   • Yuta Ogata

   OriginalPaper Open access 02 March 2022 Pages: 799 - 829

   

6. Isometry groups of three-dimensional Lie groups

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   • Silvio Reggiani

   OriginalPaper 09 March 2022 Pages: 831 - 845

7. Tachibana-type theorems and special Holonomy

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   • Matthias Wink

   OriginalPaper Open access 21 March 2022 Pages: 847 - 868

8. Asymptotics of G-equivariant Szegő kernels

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   OriginalPaper 21 March 2022 Pages: 869 - 893

9. Timelike surfaces in the de Sitter space \(\mathbb S_1^3(1)\subset {{\mathbb R}_{1}^{4}}\)

   • M. P. Dussan
   • A. P. Franco Filho
   • M. Magid

   OriginalPaper 25 March 2022 Pages: 895 - 914