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 Mar 20 awarded Curious Jan 26 revised Expanding Universe now and $\sim14$Gyr ago edited body Jan 26 asked Expanding Universe now and $\sim14$Gyr ago Jun 26 accepted Astronomical measurements and data Jun 26 revised Astronomical measurements and data added 74 characters in body Jun 26 asked Astronomical measurements and data Apr 1 revised Use of Principle of Equivalence deleted 48 characters in body; edited title Apr 1 awarded Informed Mar 31 asked Use of Principle of Equivalence Mar 5 comment Renormalization Group and Ising with d=1 and D=1 Thanks, i understand, but my question was: if i write the recursion relation $K'(K)$ and it inverse $K(K')$, one tends to decrease the coupling constant, and the other to increase. how to recognize what gives the correct flow of the coupling constant? Mar 4 asked Renormalization Group and Ising with d=1 and D=1 Feb 28 answered Ising Ferromagnet: Spontaneous symmetry breaking or not? Feb 26 awarded Supporter Feb 25 awarded Tumbleweed Feb 18 awarded Scholar Feb 18 accepted Stability of nucleii and $A=5$ Feb 17 asked Stability of nucleii and $A=5$ Feb 15 awarded Editor Feb 8 comment Statistical Mechanic $F=-\frac{\log{Z_N}}{\beta}$, so $$\beta^2\frac{\partial F}{\partial\beta}=-\beta^2\frac{Z_N^{-1}\frac{\partial Z_N}{\partial\beta}\beta-\log{Z_N}}{\beta^2}=-\beta(-\langle U\rangle+F)=\beta TS=\frac{S}{k}$$ Feb 8 answered In Noether's theorem, what is a “classical solution of the equations of motion”?