The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A271480 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A271480

Dimension of n-qubit subspace H^{MPS}_{2,n} for bond dimension 2.
(history; published version)

#12 by Joerg Arndt at Tue Apr 26 10:35:18 EDT 2016

STATUS

proposed

approved

#11 by Michel Marcus at Tue Apr 26 10:28:59 EDT 2016

STATUS

editing

proposed

#10 by Michel Marcus at Tue Apr 26 10:28:54 EDT 2016

LINKS

M. Navascues, T. Vertesi, <a href="http://arxiv.org/abs/1509.04507">The Structure of Matrix Product States</a>, arXiv preprint arXiv:1509.04507, [quant-ph], 2015.

STATUS

approved

editing

#9 by Michel Marcus at Tue Apr 26 10:28:35 EDT 2016

STATUS

reviewed

approved

#8 by Joerg Arndt at Tue Apr 26 10:13:26 EDT 2016

STATUS

proposed

reviewed

#7 by Colin Barker at Tue Apr 26 09:50:25 EDT 2016

STATUS

editing

proposed

#6 by Colin Barker at Tue Apr 26 09:50:09 EDT 2016

FORMULA

Conjectures from Colin Barker, Apr 26 2016: (Start)

a(n) = (93+3*(-1)^n+88*n+4*n^2+8*n^3+2*n^4)/96.

a(n) = (n^4+4*n^3+2*n^2+44*n+48)/48 for n even.

a(n) = (n^4+4*n^3+2*n^2+44*n+45)/48 for n odd.

a(n) = 4*a(n-1)-5*a(n-2)+5*a(n-4)-4*a(n-5)+a(n-6) for n>5.

G.f.: (1-2*x+x^2+2*x^3-x^4) / ((1-x)^5*(1+x)).

(End)

STATUS

approved

editing

#5 by R. J. Mathar at Fri Apr 15 12:57:24 EDT 2016

STATUS

editing

approved

#4 by R. J. Mathar at Fri Apr 15 12:57:18 EDT 2016

REFERENCES

M. Navascues, T. Vertesi, The Structure of Matrix Product States, arXiv preprint arXiv:1509.04507, 2015

LINKS

M. Navascues, T. Vertesi, <a href="http://arxiv.org/abs/1509.04507">The Structure of Matrix Product States</a>, arXiv preprint arXiv:1509.04507, 2015

STATUS

approved

editing

#3 by N. J. A. Sloane at Tue Apr 12 11:37:38 EDT 2016

STATUS

editing

approved