1. |
Irregular Extremal Perfect Systems of Difference Sets |
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Journal of the London Mathematical Society,
Volume s2-34,
Issue 2,
2016,
Page 193-211
D. G. Rogers,
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摘要:
An (m,n;u,v;c)‐system is a perfect system of difference sets withmcomponents of sizeu− 1 andncomponents of sizev− 1 having thresholdc. A necessary condition for the existence of an (m, n; u, 6; c)‐system foru= 3 or 4 is thatm⩾ 2c− 1. We show that, in the extremal case whenm= 2c−1, there are (2c− 1,n; 3, 6;c)‐systems forc⩾ 3 whenn= 1, and forc⩾ 5 whenn= 2, with a few possible exceptions, by first characterizing the components of size 5 and then drawing on results on complete permutations with constraints to construct the components of size 3. Large classes of non‐extremal (m, n; 3, 6;c)‐systems can be constructed from these extremal families; and the thrust of our work is to suggest that the necessary condition thatm⩾ 2c− 1 is also sufficient whencis sufficiently large compared withn.
ISSN:0024-6107
DOI:10.1112/jlms/s2-34.2.193
出版商:Oxford University Press
年代:2016
数据来源: WILEY
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2. |
Asymptotic Behaviour of Certain Sets of Attached Prime Ideals |
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Journal of the London Mathematical Society,
Volume s2-34,
Issue 2,
2016,
Page 212-218
R. Y. Sharp,
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ISSN:0024-6107
DOI:10.1112/jlms/s2-34.2.212
出版商:Oxford University Press
年代:2016
数据来源: WILEY
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3. |
The Hurwitz Constant and Diophantine Approximation on Hecke Groups |
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Journal of the London Mathematical Society,
Volume s2-34,
Issue 2,
2016,
Page 219-234
Andrew Haas,
Caroline Series,
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ISSN:0024-6107
DOI:10.1112/jlms/s2-34.2.219
出版商:Oxford University Press
年代:2016
数据来源: WILEY
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4. |
Generators and Relations for Certain Class Two Galois Groups |
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Journal of the London Mathematical Society,
Volume s2-34,
Issue 2,
2016,
Page 235-244
Stephen V. Ullom,
Stephen B. Watt,
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ISSN:0024-6107
DOI:10.1112/jlms/s2-34.2.235
出版商:Oxford University Press
年代:2016
数据来源: WILEY
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5. |
Tame Triangular Matrix Algebras Over Nakayama Algebras |
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Journal of the London Mathematical Society,
Volume s2-34,
Issue 2,
2016,
Page 245-264
Andrzej Skowroński,
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ISSN:0024-6107
DOI:10.1112/jlms/s2-34.2.245
出版商:Oxford University Press
年代:2016
数据来源: WILEY
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6. |
Groups Acting on Infinite Dimensional Projective Spaces |
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Journal of the London Mathematical Society,
Volume s2-34,
Issue 2,
2016,
Page 265-273
Simon Thomas,
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ISSN:0024-6107
DOI:10.1112/jlms/s2-34.2.265
出版商:Oxford University Press
年代:2016
数据来源: WILEY
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7. |
On Strong Barriers and an Inequality of Hardy for Domains in Rn |
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Journal of the London Mathematical Society,
Volume s2-34,
Issue 2,
2016,
Page 274-290
Alano Ancona,
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ISSN:0024-6107
DOI:10.1112/jlms/s2-34.2.274
出版商:Oxford University Press
年代:2016
数据来源: WILEY
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8. |
Resonant Perturbations of Harmonic Oscillation |
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Journal of the London Mathematical Society,
Volume s2-34,
Issue 2,
2016,
Page 291-299
Michael S. P. Eastham,
Najla S. A. El‐Sharif,
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ISSN:0024-6107
DOI:10.1112/jlms/s2-34.2.291
出版商:Oxford University Press
年代:2016
数据来源: WILEY
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9. |
Remarks on the Predual of a Jb∗‐Triple |
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Journal of the London Mathematical Society,
Volume s2-34,
Issue 2,
2016,
Page 300-304
Tom Barton,
Gilles Godefroy,
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ISSN:0024-6107
DOI:10.1112/jlms/s2-34.2.300
出版商:Oxford University Press
年代:2016
数据来源: WILEY
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10. |
Extrapolation Spaces and Almost‐Everywhere Convergence of Singular Integrals |
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Journal of the London Mathematical Society,
Volume s2-34,
Issue 2,
2016,
Page 305-316
M. E. Gomez,
M. Milman,
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ISSN:0024-6107
DOI:10.1112/jlms/s2-34.2.305
出版商:Oxford University Press
年代:2016
数据来源: WILEY
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