Department of Mathematical Sciences
CV: (PDF file)
Projects and Fields of Interest
- Differential Geometry, Harmonic Maps and Minimal Immersions;
- Convex Geometry; Measures of symmetry
- Middle Egyptian Grammar
Publications
Books
- Elements of Mathematics – A Problem Centered Approach to History and Foundations, Springer, New York, 2021; Solutions-Manual; Errata and Notes
- Measures of Symmetry for Convex Sets and Stability, Springer, New York, 2015
- Introduction to Middle Egyptian Grammar through Ancient Writings, Linus Learning, New York, 2013 (ISBN-10: 1-60797-353-7, ISBN-13: 978-1-60797-353-9)
- Glimpses of Algebra and Geometry, Second Edition, Springer, New York, 2002 (First Edition, 1997; Japanese translation by Y. Kanie, Springer, Tokyo, 2000); Errata and Notes
- Finite Moebius Groups, Spherical Minimal Immersions of Spheres, and Moduli, Springer, New York, 2002;
- Glimpses of Algebra and Geometry, Springer, New York, 1998. Japanese translation of the first edition by Y. Kanie, Springer, Tokyo, 2000.
- Harmonic maps and minimal immersions through Representation Theory, Academic Press, Boston, 1990;
- Harmonic and Minimal Maps with Applications in Geometry and Physics, Wiley, New York, 1984
Research Articles
- (with Q. Guo) Dual mean Minkowski measures and the Grunbaum conjecture for affine diameters, Pacific Journal of Mathematics, 292 (2018), 117–137.
- (with K. Miura) On the moduli of isotropic and helical minimal immersions between spheres. Michigan Math. J. 66 (2017), 499-518.
- (with Q. Guo) Dual mean Minkowski measures of asymmetry for convex bodies, Sci China Math 59 (2016), DOI 10.1007/s11425-016-5121-x.
- On the space of orthogonal multiplications in three and four dimensions and Cayley’s nodal cubic, Contributions to Algebra and Geometry 57 (2016) 407-439, DOI 10.1007/s1336-015-0269-z.
- Minimal simplices inscribed in a convex body, Geometriae Dedicata, Vol. 170, 1(2014) 303-318.
- Notes on Schneider’s stability estimates for convex sets, J. of Geom. Vol. 104, 3 (2013) 585-598.
- Simplicial slices of the space of minimal SU(2)-orbits in spheres, Contributions to Algebra and Geometry, 54(2013) 683-699.
- (with M. McClain) The Stela of Qema-Mar and His Household, Journal of Archaeology of the Zagreb Museum, VAMZ, 3. S., XLV (2012) 553-563.
- A measure of symmetry for the moduli of spherical minimal immersions, Gemoetriae Dedicata 160, 1(2012) 1-14.
- Fine structure of convex sets from asymmetric viewpoint, Contributions to Algebra and Geometry, Col. 52, 1(2011) 171-189.
- On the structure of convex sets with symmetries, Geometriae Dedicata, 143 (2009) 69-80
- Convex sets with large distortion, J. of Geom. Col 92 (2009) 174-192.
- Asymmetry of convex sets with isolated extreme points, Proc. Amer. Math. Soc. Vol 137, No. 1 (2009) 287-295.
- On the structure of convex sets with applications to the moduli of spherical minimal immersions, Contributions to Algebra and Geometry, Vol. 49, No. 2 (2008) 491-515.
- On the shape of the moduli of spherical minimal immersions, Trans. Amer. Math. Soc., Vol. 358, No.6 (2006) 2425-2446.
- Spherical minimal immersions with prescribed codimension, Geometric Dedicata, 113 (2005) 145-163.
- Critical points of the distance function on the moduli space for spherical eigenmaps and minimal immersions, Contributions to Algebra and Geometry, Vol. 45, No. 1 (2004) 305-328.
- Simplicial intersections of a convex set and moduli for spherical minimal immersions, Michigan Math. Journal, Col. 52 (2004) 341-359.
- Moduli for spherical maps and minimal immersions of homogeneous spaces, Journal of Lie Theory, Vol. 12, No. 2 (2002) 551-570.
- Operators on moduli for spherical maps of homogeneous spaces, International Journal of Mathematics, Vol. 13, No. 8 (2002) 821-843.
- Minimal Immersions of Spheres and Moduli, Period. Math. Hung. 40 (2) (2000) 211-227.
- Infinitesimal rotations of isometric minimal immersions between spheres, Amer. J. Math., 122 (2000) 117-152.
- (with W. Ziller) Spherical minimal immersions of the 3-sphere, Comment. Math. Helv. 74 (1999) 1-34.
- Universal constraints on the range of eigenmaps and spherical minimal immersions, Trans. Amer. Math. Soc. Vol. 351, No. 4 (1999) 1423-1443.
- Eigenmaps and the space of minimal immersions between spheres, Indiana Univ. Math. J. Vol. 46, No. 2 (1997) 637-658.
- New construction for spherical minimal immersions, Geometric Dedicata, 67 (1997) 187-196.
- (with H. Gauchman) Fine structure of the space of spherical minimal immersions, Trans. Amer. Math. Soc. Vol. 348, No.6 (1996) 2441-2463.
- (with F. Hiai and D. Petz) Curvature in the geometry of canonical correlations, Studia Sci. Math. Hungar. 32 (1996) 235-249.
- (with H. Gauchman) Normed bilinear pairings for semi-Euclidean spaces near the Hurwitz-Radon range, Results in Mathematics, Vol. 30 (1996) 276-301.
- On the structure of the moduli space of harmonic eigenmaps, J. Math. Soc. Japan, Vol. 47, No.3 (1995) 503-522.
- Quadratic eigenmaps between spheres, Geometric Dedicata, 56 (1995) 35-52.
- (with H. Gauchman) Real ortogonal multiplications of codimension two, Nova Journal of Algebra and Geometry, Vol. 3, No.1 (1994) 41-72.
- (with H. Gauchman) Constructions of harmonic polynomial maps between spheres, Geometriae Dedicata, 50 (1994) 57-79.
- Operators on eigenmaps between spheres, Compositio Mathematica, 88 (1993) 317-332.
- Rigidity of minimal submanifolds in terms of higher fundamental forms, Michigan Math. J., Vol. 40, No.3 (1993) 493-505.
- (with D. Petz) The Bogoliubov inner product in quantum statistics, Letters in Math. Physics, 27 (1993) 205-216.
- Mappings of moduli spaces for harmonic eigenmaps and minimal immersions between spheres, J. Math. Soc. Japan, Vol. 44, No.2 (1992) 179-198.
- On the number of rigid minimal immersions between spheres, in ‘The Problem of Plateau’ (Douglas-Rado Memorial Volume) ed. by Th. M. Rassias, World Scientific, Singapore (1992) 327-335.
- Moduli spaces of polynomial minimal immersions between complex projective spaces, Michigan Math. J., Vol.37, No.3 (1990) 385-396.
- (with D. Barbasch and J. Glazebrook) Harmonic maps between complex projective spaces, Geometriae Dedicata, 33 (1990) 37-50.
- (with S.I. Goldberg) Addendum to: Torsion and deformation of contact metric structures on 3-manifolds, Tôhoku Math. J., Vol. 41, No.2 (1989) 259-262.
- (with S.I. Goldberg and D. Perrone) Curvature and torsion of contact Riemannian three-manifolds, Proceedings of the Conference in honor of M. DoCarmo, Pitman Press, (1989) 199-210.
- Harmonic polynomial maps between spheres and complex projective spaces, in ‘Geometry and Topology’, ed. by G.M. Rassias and G.M. Stratopoulos, World Scientific, Singapore (1989) 306-314.
- (with S.I. Goldberg) On closed surfaces immersed in E3 with constant mean curvature, J. London Math. Soc., (2) 38 (1988) 333-340.
- (with S.I. Goldberg and D. Perrone) Contact three-manifolds with positive generalized Tanaka-Webster scalar curvature, Comptes Rendus Mathematiques, Acad. Sci. Canada, Vol. X, No.6 (1988) 255-260.
- On classification of quadratic harmonic maps of S³, Proc. Amer. Math. Soc., Vol. 102, No.1 (1988) 174-176.
- (with S.I. Goldberg and D. Perrone) Curvature of contact Riemannian three-manifolds with critical metrics, III International Symposium on Differential Geometry, Peniscola, Springer Lecture Notes, 1988.
- Classification of quadratic harmonic maps of S³ into spheres, Indiana U. Math. J., Col. 36, No.2 (1987) 231-239.
- (with F. Kamber and Ph. Tondeur) Transversal Jacobi fields for harmonic foliations, Michigan Math. J., 34 (1987) 261-266.
- (with S.I. Goldberg) Torsion and deformation of contact metric structures on 3-manifolds, Tôhoku Math. J., Vol.39, No.3 (1987) 365-372.
- On classification of orthogonal multiplications a la DoCarmo-Wallach, Geometriae Dedicata, 22 (1987) 251-254.
- (with Ph. Tondeur) On transversal infinitesimal automorphisms for harmonic foliations, Geometriae Dedicata, 24 (1987) 229-236.
- (with S.I. Goldberg) Remarks on Wente’s example of an immersed torus in E³, Differential Geometry and its Applications, Proceedings of the Conference, Brno (1986) 71-78.
- On nonrigidity of harmonic maps into spheres, Proc. Amer. Math. Soc., Col.94, No.4 (1985) 711-714.
- On naturally reductive homogeneous spaces harmonically embedded into spheres, J. London Math. Soc., (2) 29 (1984) 175-180.
- Flexible harmonic maps into spheres, in ‘Global Riemannian Geometry’, ed. by T.J. Willmore and N.J. Hitchin, E. Horwood Series, Halsted Press, John Wiley and Sons (1984) 156-167.
- (with G. D’Ambra) Parameter space for harmonic maps of constant energy density into spheres, Geometriae Dedicata 17 (1984) 61-67.
- (with G. D’Ambra) Extrinsic rigidity for equivariant harmonic maps into spheres, Boll. U.M.I (6) 3-A (1984) 249-255.
- (with G. D’Ambra) On infinitesimal and local rigidity of harmonic maps between spheres defined by spherical harmonics, Annali di Mat. (IV) Vol. CXXVI (1984) 25-33
- Toroidal Lie group actions on compact Riemannian manifolds and their relations to the fibering problem, Banach Center Publications, Vol. 12, PWN-Polish Sci. Publ. (1984) 233-240.
- (with A. Lee) On variation spaces of harmonic maps into spheres, Acta Sci. Math. 46 (1983) 127-141.
- Construction des applications harmoniques d’un tore dans la sphère, Annals of Global Analysis and Geometry, Vol. 1, No.2 (1983) 105-118.
- Sur les espaces fibrès différentiables munis des groupes de transformations de Lie opérant transversalement aux fibres, Rendiconti di Mat. (1) Vol.2, Series VII (1982) 129-136.
- On rigidity of harmonic mappings into spheres, J. London Math. Soc., (2) 26 (1982) 475-486.
- Harmonic submersions onto nonnegatively curved manifolds, Acta Math. Acad. Sci. Hungar. 39 (1-3) (1982) 49-53.
- On harmonic maps into locally symmetric Riemannian manifolds, in ‘Symposia Mathematica’, Vol. XXVI, Academic Press, New York (1982) 69-94.
- On variations of harmonic maps into spaces of constant curvature, Annali di Mat. (IV) Vol. CXXVIII (1981) 389-399.
A short novel (in Chinese, PDF File)