The -widths of a closed Riemannian manifold are a nonlinear analogue of the spectrum of its Laplace–Beltrami operator, which corresponds to areas of a certain min-max sequence of possibly singular minimal submanifolds. We show that the -widths of any closed Riemannian two-manifold correspond to a union of closed immersed geodesics, rather than simply geodesic nets.
We then prove optimality of the sweepouts of the round two-sphere constructed from the zero set of homogeneous polynomials, showing that the -widths of the round sphere are attained by great circles. As a result, we find the universal constant in the Liokumovich–Marques–Neves–Weyl law for surfaces to be .
En route to calculating the -widths of the round two-sphere, we prove two additional new results: a bumpy metrics theorem for stationary geodesic nets with fixed edge lengths, and that, generically, stationary geodesic nets with bounded mass and bounded singular set have Lusternik–Schnirelmann category zero.
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DOI: 10.1007/s10240-023-00141-7
Otis Chodosh 1; Christos Mantoulidis 1
@article{PMIHES_2023__137__245_0,
author = {Otis Chodosh and Christos Mantoulidis},
title = {The p-widths of a surface},
journal = {Publications Math\'ematiques de l'IH\'ES},
pages = {245--342},
year = {2023},
publisher = {Springer International Publishing},
address = {Cham},
volume = {137},
doi = {10.1007/s10240-023-00141-7},
zbl = {1533.58015},
language = {en},
url = {https://pmihes.centre-mersenne.org/articles/10.1007/s10240-023-00141-7/}
}
TY - JOUR AU - Otis Chodosh AU - Christos Mantoulidis TI - The p-widths of a surface JO - Publications Mathématiques de l'IHÉS PY - 2023 SP - 245 EP - 342 VL - 137 PB - Springer International Publishing PP - Cham UR - https://pmihes.centre-mersenne.org/articles/10.1007/s10240-023-00141-7/ DO - 10.1007/s10240-023-00141-7 LA - en ID - PMIHES_2023__137__245_0 ER -
%0 Journal Article %A Otis Chodosh %A Christos Mantoulidis %T The p-widths of a surface %J Publications Mathématiques de l'IHÉS %D 2023 %P 245-342 %V 137 %I Springer International Publishing %C Cham %U https://pmihes.centre-mersenne.org/articles/10.1007/s10240-023-00141-7/ %R 10.1007/s10240-023-00141-7 %G en %F PMIHES_2023__137__245_0
Otis Chodosh; Christos Mantoulidis. The p-widths of a surface. Publications Mathématiques de l'IHÉS, Volume 137 (2023), pp. 245-342. doi: 10.1007/s10240-023-00141-7
[AA76.] The structure of stationary one dimensional varifolds with positive density, Invent. Math., Volume 34 (1976), pp. 83-97 | MR | Zbl | DOI
[Aie19.] The width of ellipsoids, Commun. Anal. Geom., Volume 27 (2019), pp. 251-285 | MR | Zbl | DOI
[Alm62.] The homotopy groups of the integral cycle groups, Topology, Volume 1 (1962), pp. 257-299 | MR | Zbl | DOI
[Ban93.] On the existence of closed geodesics on two-spheres, Int. J. Math., Volume 4 (1993), pp. 1-10 | MR | Zbl | DOI
[Bel20.] C. Bellettini, Multiplicity-1 minmax minimal hypersurfaces in manifolds with positive Ricci curvature, Comm. Pure Appl. Math., | arXiv
[Bel22.] Generic existence of multiplicity-1 minmax minimal hypersurfaces via Allen-Cahn, Calc. Var. Partial Differ. Equ., Volume 61 (2022) | MR | Zbl | DOI
[Bir17.] Dynamical systems with two degrees of freedom, Trans. Am. Math. Soc., Volume 18 (1917), pp. 199-300 | MR | Zbl | DOI
[Bre13a.] Embedded minimal tori in and the Lawson conjecture, Acta Math., Volume 211 (2013), pp. 177-190 | MR | Zbl | DOI
[Bre13b.] Minimal surfaces in : a survey of recent results, Bull. Math. Sci., Volume 3 (2013), pp. 133-171 | MR | Zbl | DOI
[CC92.] Simple closed geodesics on convex surfaces, J. Differ. Geom., Volume 36 (1992), pp. 517-549 | MR | Zbl | DOI
[CDL03.] The min-max construction of minimal surfaces, Surveys in Differential Geometry, Vol. VIII, Volume 8 (2003), pp. 75-107 | Zbl | DOI
[CGGM22.] Ground states of semilinear elliptic problems with applications to the Allen-Cahn equation on the sphere, Calc. Var. Partial Differ. Equ., Volume 61 (2022) | MR | Zbl | DOI
[CKM17.] Minimal hypersurfaces with bounded index, Invent. Math., Volume 209 (2017), pp. 617-664 | MR | Zbl | DOI
[CLS22.] Singular behavior and generic regularity of min-max minimal hypersurfaces, Ars Inven. Anal., Volume 2 (2022), p. 27 | MR | Zbl
[CM08.] II. Width and mean curvature flow, Geom. Topol., Volume 12 (2008), pp. 2517-2535 | MR | Zbl | DOI
[CM20.] Minimal surfaces and the Allen-Cahn equation on 3-manifolds: index, multiplicity, and curvature estimates, Ann. Math., Volume 191 (2020), pp. 213-328 | MR | Zbl | DOI
[CZ21.] Existence of curves with constant geodesic curvature in a Riemannian 2-sphere, Trans. Am. Math. Soc., Volume 374 (2021), pp. 9007-9028 | MR | Zbl | DOI
[Dey22.] A comparison of the Almgren-Pitts and the Allen-Cahn min-max theory, Geom. Funct. Anal., Volume 32 (2022), pp. 980-1040 | MR | Zbl | DOI
[DLP10.] Genus bounds for minimal surfaces arising from min-max constructions, J. Reine Angew. Math., Volume 644 (2010), pp. 47-99 | MR | Zbl
[DLT13.] The existence of embedded minimal hypersurfaces, J. Differ. Geom., Volume 95 (2013), pp. 355-388 | MR | Zbl | DOI
[dPKP13.] Moduli space theory for the Allen-Cahn equation in the plane, Trans. Am. Math. Soc., Volume 365 (2013), pp. 721-766 | MR | Zbl | DOI
[dPKPW10.] Multiple-end solutions to the Allen-Cahn equation in , J. Funct. Anal., Volume 258 (2010), pp. 458-503 | MR | Zbl | DOI
[dPKW08.] The Toda system and clustering interfaces in the Allen-Cahn equation, Arch. Ration. Mech. Anal., Volume 190 (2008), pp. 141-187 | MR | Zbl | DOI
[dPKWY10.] Interface foliation near minimal submanifolds in Riemannian manifolds with positive Ricci curvature, Geom. Funct. Anal., Volume 20 (2010), pp. 918-957 | MR | Zbl | DOI
[FLP13.] Boundary value problems for the elliptic sine-Gordon equation in a semi-strip, J. Nonlinear Sci., Volume 23 (2013), pp. 241-282 | MR | Zbl | DOI
[FP12.] The Dirichlet-to-Neumann map for the elliptic sine-Gordon equation, Nonlinearity, Volume 25 (2012), pp. 1011-1031 | MR | Zbl | DOI
[Fra92.] Geodesics on and periodic points of annulus homeomorphisms, Invent. Math., Volume 108 (1992), pp. 403-418 | MR | Zbl | DOI
[FT07.] Hamiltonian Methods in the Theory of Solitons, Springer, Berlin, 2007 (English edition. Translated from the 1986 Russian original by Alexey G. Reyman) | Zbl | MR
[Gas20.] The second inner variation of energy and the Morse index of limit interfaces, J. Geom. Anal., Volume 30 (2020), pp. 69-85 | MR | Zbl | DOI
[GG18.] The Allen-Cahn equation on closed manifolds, Calc. Var. Partial Differ. Equ., Volume 57 (2018) | MR | Zbl | DOI
[GG19.] The Weyl law for the phase transition spectrum and density of limit interfaces, Geom. Funct. Anal., Volume 29 (2019), pp. 382-410 | MR | Zbl | DOI
[GL90.] A boundary value problem for a two-dimensional elliptic sine-Gordon equation and its application to the theory of the stationary Josephson effect, Zap. Nauč. Semin. LOMI, Vopr. Kvantovoj Teor. Polâ Stat. Fiz., Volume 9 (1990), pp. 53-62 (179) | MR | Zbl
[GLW16.] On variational characterization of four-end solutions of the Allen-Cahn equation in the plane, J. Funct. Anal., Volume 271 (2016), pp. 2673-2700 | MR | Zbl | DOI
[Gra89.] Shortening embedded curves, Ann. Math, Volume 129 (1989), pp. 71-111 | MR | Zbl | DOI
[Gro88.] Dimension, nonlinear spectra and width, Geometric Aspects of Functional Analysis (1986/87), 1317, Springer, Berlin, 1988, pp. 132-184 | MR | Zbl | DOI
[Gro03.] Isoperimetry of waists and concentration of maps, Geom. Funct. Anal., Volume 13 (2003), pp. 178-215 | MR | Zbl | DOI
[Gro09.] Singularities, expanders and topology of maps. I. Homology versus volume in the spaces of cycles, Geom. Funct. Anal., Volume 19 (2009), pp. 743-841 | MR | Zbl | DOI
[Gua18.] Min–max for phase transitions and the existence of embedded minimal hypersurfaces, J. Differ. Geom., Volume 108 (2018), pp. 91-133 | MR | Zbl
[Gua19.] Min-Max for the Allen–Cahn Equation and Other Topics, 2019 (http://math.uchicago.edu/~guaraco/princeton2019.pdf)
[Gui12.] Symmetry of some entire solutions to the Allen-Cahn equation in two dimensions, J. Differ. Equ., Volume 252 (2012), pp. 5853-5874 | MR | Zbl | DOI
[Gut09.] Minimax problems related to cup powers and Steenrod squares, Geom. Funct. Anal., Volume 18 (2009), pp. 1917-1987 | MR | Zbl | DOI
[Gut13.] Unexpected applications of polynomials in combinatorics, The Mathematics of Paul Erdős. I, Springer, New York, 2013, pp. 493-522 | MR | DOI
[Gut16.] Polynomial Methods in Combinatorics, 64, Am. Math. Soc., Providence, 2016 | Zbl | MR | DOI
[Hep99.] On the partition of the 2-sphere by geodesic nets, Proc. Am. Math. Soc., Volume 127 (1999), pp. 2163-2165 | MR | Zbl | DOI
[Hie18.] Spectrum and index of two-sided Allen-Cahn minimal hypersurfaces, Commun. Partial Differ. Equ., Volume 43 (2018), pp. 1541-1565 | MR | Zbl | DOI
[Hie20.] F. Hiesmayr, Rigidity of low index solutions on via a Frankel theorem for the Allen-Cahn equation, | arXiv
[Hin93.] On the growth of the number of closed geodesics on the two-sphere, Int. Math. Res. Not., Volume 9 (1993), pp. 253-262 | MR | Zbl | DOI
[Hir04.] The Direct Method in Soliton Theory, 155, Cambridge University Press, Cambridge, 2004 (Translated from the 1992 Japanese original and edited by Atsushi Nagai, Jon Nimmo and Claire Gilson, with a foreword by Jarmo Hietarinta and Nimmo) | Zbl | MR | DOI
[HK19.] Minimal 2-spheres in 3-spheres, Duke Math. J., Volume 168 (2019), pp. 1929-1975 | MR | Zbl | DOI
[HM96.] Geodesic nets on the 2-sphere, Proc. Am. Math. Soc., Volume 124 (1996), pp. 3843-3850 | MR | Zbl | DOI
[HT00.] Convergence of phase interfaces in the van der Waals-Cahn-Hilliard theory, Calc. Var. Partial Differ. Equ., Volume 10 (2000), pp. 49-84 | MR | Zbl | DOI
[IMN18.] Density of minimal hypersurfaces for generic metrics, Ann. Math., Volume 187 (2018), pp. 963-972 | MR | Zbl | DOI
[IT16a.] Analytic deformations of minimal networks, Fundam. Prikl. Mat., Volume 21 (2016), pp. 159-180 | Zbl | MR
[IT16b.] Minimal networks: a review, Advances in Dynamical Systems and Control, 69, Springer, Cham, 2016, pp. 43-80 | MR | Zbl | DOI
[Jos89.] A nonparametric proof of the theorem of Lusternik and Schnirelman, Arch. Math. (Basel), Volume 53 (1989), pp. 497-509 | MR | Zbl | DOI
[Kap11.] Doubling and desingularization constructions for minimal surfaces, Surveys in Geometric Analysis and Relativity, 20, Int. Press, Somerville, 2011, pp. 281-325 | Zbl | MR
[Ket19.] Genus bounds for min-max minimal surfaces, J. Differ. Geom., Volume 112 (2019), pp. 555-590 | MR | Zbl | DOI
[KL19.] D. Ketover and Y. Liokumovich, On the existence of closed curves of constant curvature, 2019. | MR
[Kli78.] Lectures on Closed Geodesics, 230, Springer, Berlin, 1978 | Zbl | MR | DOI
[KLP12a.] The space of 4-ended solutions to the Allen-Cahn equation in the plane, Ann. Inst. Henri Poincaré, Anal. Non Linéaire, Volume 29 (2012), pp. 761-781 | MR | Zbl | Numdam | DOI
[KLP12b.] Towards classification of multiple-end solutions to the Allen-Cahn equation in , Netw. Heterog. Media, Volume 7 (2012), pp. 837-855 | MR | Zbl | DOI
[KLP13.] The classification of four-end solutions to the Allen-Cahn equation on the plane, Anal. PDE, Volume 6 (2013), pp. 1675-1718 | MR | Zbl | DOI
[KLPW15.] End-to-end construction for the Allen-Cahn equation in the plane, Calc. Var. Partial Differ. Equ., Volume 52 (2015), pp. 281-302 | MR | Zbl | DOI
[KLS19.] D. Ketover, Y. Liokumovich and A. Song, On the existence of minimal Heegaard surfaces, | arXiv
[KMN20.] The catenoid estimate and its geometric applications, J. Differ. Geom., Volume 115 (2020), pp. 1-26 | MR | Zbl | DOI
[KW20.] The index and nullity of the Lawson surfaces , Camb. J. Math., Volume 8 (2020), pp. 363-405 | MR | Zbl | DOI
[Lan99.] Fundamentals of Differential Geometry, 191, Springer, New York, 1999 | Zbl | MR | DOI
[Law70.] Complete minimal surfaces in , Ann. Math., Volume 92 (1970), pp. 335-374 | MR | Zbl | DOI
[Li19.] Y. Li, Existence of infinitely many minimal hypersurfaces in higher-dimensional closed manifolds with generic metrics, J. Differential Geom., | arXiv | MR
[Li20.] Y. Li, An improved Morse index bound of min-max minimal hypersurfaces, | arXiv
[Lio16.] Families of short cycles on Riemannian surfaces, Duke Math. J., Volume 165 (2016), pp. 1363-1379 | MR | Zbl | DOI
[LMN18.] Weyl law for the volume spectrum, Ann. Math., Volume 187 (2018), pp. 933-961 | MR | Zbl | DOI
[LS47.] Topological methods in variational problems and their application to the differential geometry of surfaces, Usp. Mat. Nauk, Volume 2(1(17)) (1947), pp. 166-217 | MR | Zbl
[LS21.] Y. Liokumovich and B. Staffa, Generic density of geodesic nets, 2021.
[Lus47.] Topology of functional spaces and calculus of variations in the large, Trav. Inst. Math. Steklov, Volume 19 (1947), p. 100 | MR | Zbl
[LW20.] Y. Li and Z. Wang, Generic regularity of minimal hypersurfaces in dimension 8, | arXiv
[LW22.] Classification of finite Morse index solutions to the elliptic sine-Gordon equation in the plane, Rev. Mat. Iberoam., Volume 38 (2022), pp. 355-432 | MR | Zbl | DOI
[Man21.] Allen-Cahn min-max on surfaces, J. Differ. Geom., Volume 117 (2021), pp. 93-135 | MR | Zbl | DOI
[Mat15.] MathOverflow, Explicit eigenvalues of the Laplacian, 2015, https://mathoverflow.net/questions/219109/explicit-eigenvalues-of-the-laplacian. Accessed 19 July 2021.
[MMN20.] F. C. Marques, R. Montezuma and A. Neves, Morse inequalities for the area functional, J. Differential Geom., | arXiv | MR
[MN14.] Min-max theory and the Willmore conjecture, Ann. Math., Volume 179 (2014), pp. 683-782 | MR | Zbl | DOI
[MN16.] Morse index and multiplicity of min-max minimal hypersurfaces, Camb. J. Math., Volume 4 (2016), pp. 463-511 | MR | Zbl | DOI
[MN17.] Existence of infinitely many minimal hypersurfaces in positive Ricci curvature, Invent. Math., Volume 209 (2017), pp. 577-616 | MR | Zbl | DOI
[MN21.] Morse index of multiplicity one min-max minimal hypersurfaces, Adv. Math., Volume 378 (2021) | MR | Zbl | DOI
[MNS19.] Equidistribution of minimal hypersurfaces for generic metrics, Invent. Math., Volume 216 (2019), pp. 421-443 | MR | Zbl | DOI
[Mor96.] The Calculus of Variations in the Large, 18, Am. Math. Soc., Providence, 1996 (Reprint of the 1932 original) | Zbl | MR
[MR16.] A viscosity method for the min-max construction of closed geodesics, ESAIM Control Optim. Calc. Var., Volume 22 (2016), pp. 1282-1324 | MR | Zbl | Numdam | DOI
[NP20.] Geodesic Nets: Some Examples and Open Problems, 2020, pp. 1-25 | Zbl | MR
[NR04.] Volume, diameter and the minimal mass of a stationary 1-cycle, Geom. Funct. Anal., Volume 14 (2004), pp. 748-790 | MR | Zbl | DOI
[NR07.] Shapes of geodesic nets, Geom. Topol., Volume 11 (2007), pp. 1225-1254 | MR | Zbl | DOI
[NS97.] Bound states of the elliptic sine-Gordon equation, Physica D, Volume 106 (1997), pp. 81-94 | MR | Zbl | DOI
[Nur16.] C. Nurser, Low min-max widths of the round three-sphere, PhD thesis, Imperial College London, 180 Queen’s Gate, London SW7 2BZ, 2016.
[Par19.] F. Parsch, Geodesic Nets with Few Boundary Points, ProQuest LLC, Ann Arbor, MI Ph.D. Thesis, University of Toronto (Canada), Ann Arbor (2019). | MR
[Pel09.] Spectral analysis of the elliptic sine-Gordon equation in the quarter plane, Teor. Mat. Fiz., Volume 160 (2009), pp. 189-201 | MR | Zbl | DOI
[Pit81.] Existence and Regularity of Minimal Surfaces on Riemannian Manifolds, 27, Princeton University Press/University of Tokyo Press, Princeton/Tokyo, 1981 | Zbl | MR | DOI
[Poi05.] Sur les lignes géodésiques des surfaces convexes, Trans. Am. Math. Soc., Volume 6 (1905), pp. 237-274 | Zbl | MR
[PP10.] The elliptic sine-Gordon equation in a half plane, Nonlinearity, Volume 23 (2010), pp. 77-88 | MR | Zbl | DOI
[PR20a.] A proof of the multiplicity 1 conjecture for min-max minimal surfaces in arbitrary codimension, Duke Math. J., Volume 169 (2020), pp. 2005-2044 | MR | Zbl | DOI
[PR20b.] The regularity of parametrized integer stationary varifolds in two dimensions, Commun. Pure Appl. Math., Volume 73 (2020), pp. 1981-2042 | MR | Zbl | DOI
[PS21.] Minimal submanifolds from the Abelian Higgs model, Invent. Math., Volume 223 (2021), pp. 1027-1095 | MR | Zbl | DOI
[Riv17.] A viscosity method in the min-max theory of minimal surfaces, Publ. Math. Inst. Hautes Études Sci., Volume 126 (2017), pp. 177-246 | MR | Zbl | Numdam | DOI
[Riv21.] Lower semi-continuity of the index in the viscosity method for minimal surfaces, Int. Math. Res. Not., Volume 8 (2021), pp. 5651-5675 | MR | Zbl
[RL19.] A. Ramírez-Luna, Orientability of min-max hypersurfaces in manifolds of positive Ricci curvature, | arXiv
[Rot07.] The length of a shortest geodesic net on a closed Riemannian manifold, Topology, Volume 46 (2007), pp. 343-356 | MR | Zbl | DOI
[Sim83.] Lectures on Geometric Measure Theory, 3, Australian National University, Centre for Mathematical Analysis, Canberra, 1983 | Zbl | MR
[Sma65.] An infinite dimensional version of Sard’s theorem, Am. J. Math., Volume 87 (1965), pp. 861-866 | MR | Zbl | DOI
[Smi82.] F. Smith, On the existence of embedded minimal two spheres in the three sphere, endowed with an arbitrary Riemannian metric, Ph.D. Thesis, University of Melbourne, Supervisor: Leon Simon, 1982.
[Son19.] A. Song, A dichotomy for minimal hypersurfaces in manifolds thick at infinity, Ann. Sci. Ec. Norm. Supér. (2019), to appear. | MR
[Son23.] Existence of infinitely many minimal hypersurfaces in closed manifolds, Ann. Math., Volume 197 (2023), pp. 859-895 | MR | Zbl | DOI
[SS81.] Regularity of stable minimal hypersurfaces, Commun. Pure Appl. Math., Volume 34 (1981), pp. 741-797 | MR | Zbl | DOI
[Sta21.] B. Staffa, Bumpy Metrics Theorem for Geodesic Nets, 2021.
[SZ21.] Generic scarring for minimal hypersurfaces along stable hypersurfaces, Geom. Funct. Anal., Volume 31 (2021), pp. 948-980 | MR | Zbl | DOI
[Tai92.] On the existence of three nonintersecting closed geodesics on manifolds that are homeomorphic to the two-dimensional sphere, Izv. Akad. Nauk SSSR, Ser. Mat., Volume 56 (1992), pp. 605-635 | Zbl | MR
[Tau80.] On the equivalence of the first and second order equations for gauge theories, Commun. Math. Phys., Volume 75 (1980), pp. 207-227 | MR | Zbl | DOI
[Ton05.] On stable critical points for a singular perturbation problem, Commun. Anal. Geom., Volume 13 (2005), pp. 439-459 | MR | Zbl | DOI
[TW12.] Stable phase interfaces in the van der Waals–Cahn–Hilliard theory, J. Reine Angew. Math., Volume 668 (2012), pp. 191-210 | MR | Zbl
[Wan17.] Some remarks on the structure of finite Morse index solutions to the Allen-Cahn equation in , NoDEA Nonlinear Differential Equations Appl., Volume 24 (2017) | MR | Zbl | DOI
[Wan20.] Z. Wang, Deformations of singular minimal hypersurfaces I, isolated singularities, | arXiv
[Whi91.] The space of minimal submanifolds for varying Riemannian metrics, Indiana Univ. Math. J., Volume 40 (1991), pp. 161-200 | MR | Zbl | DOI
[Whi17.] On the bumpy metrics theorem for minimal submanifolds, Am. J. Math., Volume 139 (2017), pp. 1149-1155 | MR | Zbl | DOI
[Whi21.] B. White, Personal communication, June 2021.
[Wic14.] A general regularity theory for stable codimension 1 integral varifolds, Ann. Math., Volume 179 (2014), pp. 843-1007 | MR | Zbl | DOI
[WW19a.] Finite Morse index implies finite ends, Commun. Pure Appl. Math., Volume 72 (2019), pp. 1044-1119 | MR | Zbl | DOI
[WW19b.] Second order estimate on transition layers, Adv. Math., Volume 358 (2019) | MR | Zbl | DOI
[Xu18.] The -width of Riemannian manifolds and its realization, Indiana Univ. Math. J., Volume 67 (2018), pp. 999-1023 | MR | Zbl | DOI
[Zho15.] Min-max minimal hypersurface in with and , J. Differ. Geom., Volume 100 (2015), pp. 129-160 | Zbl | MR | DOI
[Zho17.] Min-max hypersurface in manifold of positive Ricci curvature, J. Differ. Geom., Volume 105 (2017), pp. 291-343 | MR | Zbl | DOI
[Zho20.] On the multiplicity one conjecture in min-max theory, Ann. Math., Volume 192 (2020), pp. 767-820 | MR | Zbl | DOI
[ZZ19.] Min-max theory for constant mean curvature hypersurfaces, Invent. Math., Volume 218 (2019), pp. 441-490 | MR | Zbl | DOI
[ZZ20a.] Existence of hypersurfaces with prescribed mean curvature I—generic min-max, Camb. J. Math., Volume 8 (2020), pp. 311-362 | MR | Zbl | DOI
[ZZ20b.] Min-max theory for networks of constant geodesic curvature, Adv. Math., Volume 361 (2020) | MR | Zbl | DOI
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