The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A199007 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A199007

Related to number of cocyclic Hadamard matrices of order 4n.
(history; published version)

#19 by Michael De Vlieger at Thu Jun 30 14:44:51 EDT 2022

STATUS

reviewed

approved

#18 by Wesley Ivan Hurt at Thu Jun 30 13:28:18 EDT 2022

STATUS

proposed

reviewed

#17 by Wesley Ivan Hurt at Thu Jun 30 13:28:14 EDT 2022

STATUS

editing

proposed

#16 by Wesley Ivan Hurt at Thu Jun 30 13:27:06 EDT 2022

CROSSREFS

Cf. A199005, A007299, A199005, A199006.

STATUS

proposed

editing

#15 by Michel Marcus at Thu Jun 30 13:02:47 EDT 2022

STATUS

editing

proposed

#14 by Michel Marcus at Thu Jun 30 13:02:43 EDT 2022

REFERENCES

V. Alvarez, J. A. Armario, M. D. Frau and F. Gudlel, The maximal determinant of cocyclic (-1, 1)-matrices over D_{2t}, Linear Algebra and its Applications, 2011, in press; doi:10.1016/j.laa.2011.05.018. See Table 2.

LINKS

V. Alvarez, J. A. Armario, M. D. Frau, and F. Gudlel, <a href="https://doi.org/10.1016/j.laa.2011.05.018">The maximal determinant of cocyclic (-1, 1)-matrices over D_{2t}</a>, Linear Algebra and its Applications, 2011, Volume 436, Issue 4, 15 February 2012, Pages 858-873. See Table 2.

KEYWORD

nonn,more

STATUS

approved

editing

#13 by Russ Cox at Fri Mar 30 16:52:04 EDT 2012

AUTHOR

_N. J. A. Sloane (njas(AT)research.att.com), _, Nov 01 2011

Discussion

Fri Mar 30

16:52

OEIS Server: https://oeis.org/edit/global/110

#12 by N. J. A. Sloane at Mon Feb 06 04:05:56 EST 2012

STATUS

editing

approved

#11 by N. J. A. Sloane at Mon Feb 06 04:05:53 EST 2012

COMMENTS

See A199005 for the number of inequivalent matrices.

STATUS

approved

editing

#10 by N. J. A. Sloane at Mon Feb 06 04:05:19 EST 2012

STATUS

editing

approved