| 1. |
Some Extensions of I. N. Vekua's Method in Higher Dimensions. I. Integral representation of solutions of an elliptic system. Properties of solutions |
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Mathematische Nachrichten,
Volume 130,
Issue 1,
1987,
Page 7-34
Nguyen Thua Hop,
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ISSN:0025-584X
DOI:10.1002/mana.19871300102
出版商:WILEY‐VCH Verlag
年代:1987
数据来源: WILEY
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| 2. |
Some Extensions of I. N. Vekua's Method in Higher Dimensions. II. Boundary value problems |
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Mathematische Nachrichten,
Volume 130,
Issue 1,
1987,
Page 35-46
Nguyen Thua Hop,
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ISSN:0025-584X
DOI:10.1002/mana.19871300103
出版商:WILEY‐VCH Verlag
年代:1987
数据来源: WILEY
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| 3. |
Least Squares Approximate and Least Norm Solutions of Paired Singular Equations |
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Mathematische Nachrichten,
Volume 130,
Issue 1,
1987,
Page 47-68
Frank‐Olme Speck,
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摘要:
AbstractPaired operatorsT=A1P+A2Qon a HILBERTspace are studied wherePis a projector,P+Q=I, and the coefficients are linear invertible operators. The MOORE‐PENROSEinverse ofTcan be obtained explicitly from a factorization of the coefficients, which is equivalent to the normal solvability ofTand occurs in numerous applications. As an example, systems of singular integral equations of CAUCHYtype are analysized in detai
ISSN:0025-584X
DOI:10.1002/mana.19871300104
出版商:WILEY‐VCH Verlag
年代:1987
数据来源: WILEY
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| 4. |
Countable‐Codimensional Subspaces ofc0‐Barrelled Spaces |
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Mathematische Nachrichten,
Volume 130,
Issue 1,
1987,
Page 69-73
J. M. Garcia‐Lafuente,
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摘要:
AbstractA Hausdorff locally convex space is said to bec0‐barrelled (respectively ω‐barrelled) if each sequence in the dual space that converges weakly to 0 (respectively that is weakly bounded), is equicontinuous. It is proved that if ac0‐barrelled spaceEhas dualE′ weakly sequentially complete, then every subspace of countable codimension ofEisc0‐barrelled. We prove that the hypothesis onE′ cannot be dropped and we supply an example of a completec0‐barrelled space with dual weakly sequentially complete that is n
ISSN:0025-584X
DOI:10.1002/mana.19871300105
出版商:WILEY‐VCH Verlag
年代:1987
数据来源: WILEY
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| 5. |
Finsler Structures onA‐Bundles |
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Mathematische Nachrichten,
Volume 130,
Issue 1,
1987,
Page 75-85
Makia H. Papatriantafillou,
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ISSN:0025-584X
DOI:10.1002/mana.19871300106
出版商:WILEY‐VCH Verlag
年代:1987
数据来源: WILEY
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| 6. |
Solution of Kartsatos' Problem on Nonlinear Boundary Value Problems for Ordinary Differential Equations on Infinitive Intervals |
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Mathematische Nachrichten,
Volume 130,
Issue 1,
1987,
Page 87-90
Giovanni Vidossich,
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摘要:
AbstractWe solve in the affirmative a problem raised by Kartsatos about the solvability of functional boundary value problems for ordinary differential equations on infinite intervals.
ISSN:0025-584X
DOI:10.1002/mana.19871300107
出版商:WILEY‐VCH Verlag
年代:1987
数据来源: WILEY
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| 7. |
Pseudometric Extensions of the Brezis‐Browder Ordering Principle |
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Mathematische Nachrichten,
Volume 130,
Issue 1,
1987,
Page 91-103
Mihai Turinici,
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ISSN:0025-584X
DOI:10.1002/mana.19871300108
出版商:WILEY‐VCH Verlag
年代:1987
数据来源: WILEY
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| 8. |
Weakly Closed Functions and Hausdorff Spaces |
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Mathematische Nachrichten,
Volume 130,
Issue 1,
1987,
Page 105-110
D. A. Rose,
D. S. Janković,
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摘要:
AbstractFor weakly closed surjections between arbitrary topological spaces conditions are sought which assure a HAUSDORFFrange. Some results of T. NOIRIare corrected and/or improved, and some results of J. K. KOHLIare slightly strengthened.
ISSN:0025-584X
DOI:10.1002/mana.19871300109
出版商:WILEY‐VCH Verlag
年代:1987
数据来源: WILEY
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| 9. |
A Class of Nonlinear Riemann‐Hilbert Problems with Monotone Nonlinearity |
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Mathematische Nachrichten,
Volume 130,
Issue 1,
1987,
Page 111-119
L. V. Wolfersdorf,
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ISSN:0025-584X
DOI:10.1002/mana.19871300110
出版商:WILEY‐VCH Verlag
年代:1987
数据来源: WILEY
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| 10. |
An Extension Problem for Non‐Negative Hermitian Block Toeplitz Matrices |
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Mathematische Nachrichten,
Volume 130,
Issue 1,
1987,
Page 121-135
Bernd Fritzsche,
Bernd Kirstein,
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ISSN:0025-584X
DOI:10.1002/mana.19871300111
出版商:WILEY‐VCH Verlag
年代:1987
数据来源: WILEY
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