A lower bound for the constant %$A_1 (X)%$ in normed linear spaces
Abstract To describe the geometry of normed spaces, many geometric constants have been investigated. Among them, there are two geometric constants related to Minkowski ellipses. These constants measure how large the sum of the distances from a point of the unit sphere to two antipodal points can be....
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Mizuguchi, Hiroyasu [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Anmerkung: |
© The Managing Editors 2022 |
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| Übergeordnetes Werk: |
Enthalten in: Beiträge zur Algebra und Geometrie - Berlin : Springer, 1993, 64(2022), 3 vom: 22. Apr., Seite 535-543 |
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| Übergeordnetes Werk: |
volume:64 ; year:2022 ; number:3 ; day:22 ; month:04 ; pages:535-543 |
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| DOI / URN: |
10.1007/s13366-022-00646-y |
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| Katalog-ID: |
SPR052255670 |
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| 245 | 1 | 2 | |a A lower bound for the constant %$A_1 (X)%$ in normed linear spaces |
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| 520 | |a Abstract To describe the geometry of normed spaces, many geometric constants have been investigated. Among them, there are two geometric constants related to Minkowski ellipses. These constants measure how large the sum of the distances from a point of the unit sphere to two antipodal points can be. In this paper we investigate the lower bound for one of them. We also treat isosceles and Birkhoff orthogonalities. The usual orthogonality in inner product spaces and isosceles orthogonality in normed spaces are symmetric. However, Birkhoff orthogonality is not symmetric in general normed spaces. A two-dimensional normed plane in which Birkhoff orthogonality is symmetric is called Radon plane. The upper and lower bound for that two constants have been studied in general spaces, and in Radon planes. An inequality had shown in Radon planes is proved in general normed spaces. | ||
| 650 | 4 | |a Geometric constant |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Geometric inequality |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Isosceles orthogonality |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Birkhoff orthogonality |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Normed space |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Minkowski plane |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Radon plane |7 (dpeaa)DE-He213 | |
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10.1007/s13366-022-00646-y doi (DE-627)SPR052255670 (SPR)s13366-022-00646-y-e DE-627 ger DE-627 rakwb eng Mizuguchi, Hiroyasu verfasserin (orcid)0000-0003-1701-7610 aut A lower bound for the constant %$A_1 (X)%$ in normed linear spaces 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Managing Editors 2022 Abstract To describe the geometry of normed spaces, many geometric constants have been investigated. Among them, there are two geometric constants related to Minkowski ellipses. These constants measure how large the sum of the distances from a point of the unit sphere to two antipodal points can be. In this paper we investigate the lower bound for one of them. We also treat isosceles and Birkhoff orthogonalities. The usual orthogonality in inner product spaces and isosceles orthogonality in normed spaces are symmetric. However, Birkhoff orthogonality is not symmetric in general normed spaces. A two-dimensional normed plane in which Birkhoff orthogonality is symmetric is called Radon plane. The upper and lower bound for that two constants have been studied in general spaces, and in Radon planes. An inequality had shown in Radon planes is proved in general normed spaces. Geometric constant (dpeaa)DE-He213 Geometric inequality (dpeaa)DE-He213 Isosceles orthogonality (dpeaa)DE-He213 Birkhoff orthogonality (dpeaa)DE-He213 Normed space (dpeaa)DE-He213 Minkowski plane (dpeaa)DE-He213 Radon plane (dpeaa)DE-He213 Enthalten in Beiträge zur Algebra und Geometrie Berlin : Springer, 1993 64(2022), 3 vom: 22. Apr., Seite 535-543 (DE-627)320518159 (DE-600)2014219-5 2191-0383 nnns volume:64 year:2022 number:3 day:22 month:04 pages:535-543 https://dx.doi.org/10.1007/s13366-022-00646-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 64 2022 3 22 04 535-543 |
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10.1007/s13366-022-00646-y doi (DE-627)SPR052255670 (SPR)s13366-022-00646-y-e DE-627 ger DE-627 rakwb eng Mizuguchi, Hiroyasu verfasserin (orcid)0000-0003-1701-7610 aut A lower bound for the constant %$A_1 (X)%$ in normed linear spaces 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Managing Editors 2022 Abstract To describe the geometry of normed spaces, many geometric constants have been investigated. Among them, there are two geometric constants related to Minkowski ellipses. These constants measure how large the sum of the distances from a point of the unit sphere to two antipodal points can be. In this paper we investigate the lower bound for one of them. We also treat isosceles and Birkhoff orthogonalities. The usual orthogonality in inner product spaces and isosceles orthogonality in normed spaces are symmetric. However, Birkhoff orthogonality is not symmetric in general normed spaces. A two-dimensional normed plane in which Birkhoff orthogonality is symmetric is called Radon plane. The upper and lower bound for that two constants have been studied in general spaces, and in Radon planes. An inequality had shown in Radon planes is proved in general normed spaces. Geometric constant (dpeaa)DE-He213 Geometric inequality (dpeaa)DE-He213 Isosceles orthogonality (dpeaa)DE-He213 Birkhoff orthogonality (dpeaa)DE-He213 Normed space (dpeaa)DE-He213 Minkowski plane (dpeaa)DE-He213 Radon plane (dpeaa)DE-He213 Enthalten in Beiträge zur Algebra und Geometrie Berlin : Springer, 1993 64(2022), 3 vom: 22. Apr., Seite 535-543 (DE-627)320518159 (DE-600)2014219-5 2191-0383 nnns volume:64 year:2022 number:3 day:22 month:04 pages:535-543 https://dx.doi.org/10.1007/s13366-022-00646-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 64 2022 3 22 04 535-543 |
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10.1007/s13366-022-00646-y doi (DE-627)SPR052255670 (SPR)s13366-022-00646-y-e DE-627 ger DE-627 rakwb eng Mizuguchi, Hiroyasu verfasserin (orcid)0000-0003-1701-7610 aut A lower bound for the constant %$A_1 (X)%$ in normed linear spaces 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Managing Editors 2022 Abstract To describe the geometry of normed spaces, many geometric constants have been investigated. Among them, there are two geometric constants related to Minkowski ellipses. These constants measure how large the sum of the distances from a point of the unit sphere to two antipodal points can be. In this paper we investigate the lower bound for one of them. We also treat isosceles and Birkhoff orthogonalities. The usual orthogonality in inner product spaces and isosceles orthogonality in normed spaces are symmetric. However, Birkhoff orthogonality is not symmetric in general normed spaces. A two-dimensional normed plane in which Birkhoff orthogonality is symmetric is called Radon plane. The upper and lower bound for that two constants have been studied in general spaces, and in Radon planes. An inequality had shown in Radon planes is proved in general normed spaces. Geometric constant (dpeaa)DE-He213 Geometric inequality (dpeaa)DE-He213 Isosceles orthogonality (dpeaa)DE-He213 Birkhoff orthogonality (dpeaa)DE-He213 Normed space (dpeaa)DE-He213 Minkowski plane (dpeaa)DE-He213 Radon plane (dpeaa)DE-He213 Enthalten in Beiträge zur Algebra und Geometrie Berlin : Springer, 1993 64(2022), 3 vom: 22. Apr., Seite 535-543 (DE-627)320518159 (DE-600)2014219-5 2191-0383 nnns volume:64 year:2022 number:3 day:22 month:04 pages:535-543 https://dx.doi.org/10.1007/s13366-022-00646-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 64 2022 3 22 04 535-543 |
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10.1007/s13366-022-00646-y doi (DE-627)SPR052255670 (SPR)s13366-022-00646-y-e DE-627 ger DE-627 rakwb eng Mizuguchi, Hiroyasu verfasserin (orcid)0000-0003-1701-7610 aut A lower bound for the constant %$A_1 (X)%$ in normed linear spaces 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Managing Editors 2022 Abstract To describe the geometry of normed spaces, many geometric constants have been investigated. Among them, there are two geometric constants related to Minkowski ellipses. These constants measure how large the sum of the distances from a point of the unit sphere to two antipodal points can be. In this paper we investigate the lower bound for one of them. We also treat isosceles and Birkhoff orthogonalities. The usual orthogonality in inner product spaces and isosceles orthogonality in normed spaces are symmetric. However, Birkhoff orthogonality is not symmetric in general normed spaces. A two-dimensional normed plane in which Birkhoff orthogonality is symmetric is called Radon plane. The upper and lower bound for that two constants have been studied in general spaces, and in Radon planes. An inequality had shown in Radon planes is proved in general normed spaces. Geometric constant (dpeaa)DE-He213 Geometric inequality (dpeaa)DE-He213 Isosceles orthogonality (dpeaa)DE-He213 Birkhoff orthogonality (dpeaa)DE-He213 Normed space (dpeaa)DE-He213 Minkowski plane (dpeaa)DE-He213 Radon plane (dpeaa)DE-He213 Enthalten in Beiträge zur Algebra und Geometrie Berlin : Springer, 1993 64(2022), 3 vom: 22. Apr., Seite 535-543 (DE-627)320518159 (DE-600)2014219-5 2191-0383 nnns volume:64 year:2022 number:3 day:22 month:04 pages:535-543 https://dx.doi.org/10.1007/s13366-022-00646-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 64 2022 3 22 04 535-543 |
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10.1007/s13366-022-00646-y doi (DE-627)SPR052255670 (SPR)s13366-022-00646-y-e DE-627 ger DE-627 rakwb eng Mizuguchi, Hiroyasu verfasserin (orcid)0000-0003-1701-7610 aut A lower bound for the constant %$A_1 (X)%$ in normed linear spaces 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © The Managing Editors 2022 Abstract To describe the geometry of normed spaces, many geometric constants have been investigated. Among them, there are two geometric constants related to Minkowski ellipses. These constants measure how large the sum of the distances from a point of the unit sphere to two antipodal points can be. In this paper we investigate the lower bound for one of them. We also treat isosceles and Birkhoff orthogonalities. The usual orthogonality in inner product spaces and isosceles orthogonality in normed spaces are symmetric. However, Birkhoff orthogonality is not symmetric in general normed spaces. A two-dimensional normed plane in which Birkhoff orthogonality is symmetric is called Radon plane. The upper and lower bound for that two constants have been studied in general spaces, and in Radon planes. An inequality had shown in Radon planes is proved in general normed spaces. Geometric constant (dpeaa)DE-He213 Geometric inequality (dpeaa)DE-He213 Isosceles orthogonality (dpeaa)DE-He213 Birkhoff orthogonality (dpeaa)DE-He213 Normed space (dpeaa)DE-He213 Minkowski plane (dpeaa)DE-He213 Radon plane (dpeaa)DE-He213 Enthalten in Beiträge zur Algebra und Geometrie Berlin : Springer, 1993 64(2022), 3 vom: 22. Apr., Seite 535-543 (DE-627)320518159 (DE-600)2014219-5 2191-0383 nnns volume:64 year:2022 number:3 day:22 month:04 pages:535-543 https://dx.doi.org/10.1007/s13366-022-00646-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 64 2022 3 22 04 535-543 |
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Mizuguchi, Hiroyasu |
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Mizuguchi, Hiroyasu misc Geometric constant misc Geometric inequality misc Isosceles orthogonality misc Birkhoff orthogonality misc Normed space misc Minkowski plane misc Radon plane A lower bound for the constant %$A_1 (X)%$ in normed linear spaces |
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A lower bound for the constant %$A_1 (X)%$ in normed linear spaces Geometric constant (dpeaa)DE-He213 Geometric inequality (dpeaa)DE-He213 Isosceles orthogonality (dpeaa)DE-He213 Birkhoff orthogonality (dpeaa)DE-He213 Normed space (dpeaa)DE-He213 Minkowski plane (dpeaa)DE-He213 Radon plane (dpeaa)DE-He213 |
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A lower bound for the constant %$A_1 (X)%$ in normed linear spaces |
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lower bound for the constant %$a_1 (x)%$ in normed linear spaces |
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A lower bound for the constant %$A_1 (X)%$ in normed linear spaces |
| abstract |
Abstract To describe the geometry of normed spaces, many geometric constants have been investigated. Among them, there are two geometric constants related to Minkowski ellipses. These constants measure how large the sum of the distances from a point of the unit sphere to two antipodal points can be. In this paper we investigate the lower bound for one of them. We also treat isosceles and Birkhoff orthogonalities. The usual orthogonality in inner product spaces and isosceles orthogonality in normed spaces are symmetric. However, Birkhoff orthogonality is not symmetric in general normed spaces. A two-dimensional normed plane in which Birkhoff orthogonality is symmetric is called Radon plane. The upper and lower bound for that two constants have been studied in general spaces, and in Radon planes. An inequality had shown in Radon planes is proved in general normed spaces. © The Managing Editors 2022 |
| abstractGer |
Abstract To describe the geometry of normed spaces, many geometric constants have been investigated. Among them, there are two geometric constants related to Minkowski ellipses. These constants measure how large the sum of the distances from a point of the unit sphere to two antipodal points can be. In this paper we investigate the lower bound for one of them. We also treat isosceles and Birkhoff orthogonalities. The usual orthogonality in inner product spaces and isosceles orthogonality in normed spaces are symmetric. However, Birkhoff orthogonality is not symmetric in general normed spaces. A two-dimensional normed plane in which Birkhoff orthogonality is symmetric is called Radon plane. The upper and lower bound for that two constants have been studied in general spaces, and in Radon planes. An inequality had shown in Radon planes is proved in general normed spaces. © The Managing Editors 2022 |
| abstract_unstemmed |
Abstract To describe the geometry of normed spaces, many geometric constants have been investigated. Among them, there are two geometric constants related to Minkowski ellipses. These constants measure how large the sum of the distances from a point of the unit sphere to two antipodal points can be. In this paper we investigate the lower bound for one of them. We also treat isosceles and Birkhoff orthogonalities. The usual orthogonality in inner product spaces and isosceles orthogonality in normed spaces are symmetric. However, Birkhoff orthogonality is not symmetric in general normed spaces. A two-dimensional normed plane in which Birkhoff orthogonality is symmetric is called Radon plane. The upper and lower bound for that two constants have been studied in general spaces, and in Radon planes. An inequality had shown in Radon planes is proved in general normed spaces. © The Managing Editors 2022 |
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A lower bound for the constant %$A_1 (X)%$ in normed linear spaces |
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https://dx.doi.org/10.1007/s13366-022-00646-y |
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10.1007/s13366-022-00646-y |
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2024-07-04T02:02:20.563Z |
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