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%I #13 Sep 08 2022 08:46:06
%S 3,3,6,2,6,4,3,9,0,5,9,6,1,4,3,3,7,8,0,3,7,3,6,2,7,2,5,7,0,0,1,4,4,4,
%T 1,9,9,9,4,6,0,6,6,1,3,6,3,0,6,3,4,5,4,0,0,4,7,5,2,8,7,4,3,5,7,9,7,8,
%U 4,0,5,5,3,4,9,2,9,1,7,6,2,5,9,7,5,2,7,7,0,1,2,5,9,7,9,6,6,5,0,9,6,5,5,7,9
%N Decimal expansion of 2 + 21/4*(4/11)^(4/3).
%C Evolution of the effective number of relativistic degrees of freedom contributing to energy density, g(*), can be seen on a graph as a function of temperature. At the energy scales below 0.1 MeV, g(*) is equal to this constant (in the Standard Model and in the minimal extension of Standard Model).
%D Benjamin Bederson, More Things in Heaven and Earth: A Celebration of Physics at the Millennium, Springer-Verlag, New York, 1999, p. 272.
%D J. C. Niemeyer and J. W. Truran, Type la Supernovae: Theory and Cosmology, Cambridge University Press, 2000, p. 107.
%H Hannu Kurki-Suonio, <a href="http://www.helsinki.fi/~hkurkisu/cosmology/Cosmo6.pdf">Cosmology I, Chapter 6: Thermal history of the Early Universe</a>, p. 64.
%e 3.362643905961433780373627257001444199946066136306345400475287435797840...
%p Digits:=100: evalf(2+21/4*(4/11)^(4/3)); # _Wesley Ivan Hurt_, Oct 05 2014
%t RealDigits[N[2 + 21/4*(4/11)^(4/3), 105]][[1]]
%o (Magma) n:=2+21/4*(RealField(105)!4/11)^(4/3); Reverse(Intseq(Floor(10^104*n)));
%o (PARI) default(realprecision, 105); x=2+21/4*(4/11)^(4/3); for(n=1, 105, d=floor(x); x=(x-d)*10; print1(d, ", "));
%Y Cf. A111728.
%K nonn,cons,easy
%O 1,1
%A _Arkadiusz Wesolowski_, Jan 21 2014
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