Re: " for
- To: mathgroup at smc.vnet.net
- Subject: [mg119685] Re: " for
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Fri, 17 Jun 2011 00:10:07 -0400 (EDT)
- Reply-to: hanlonr at cox.net
Assumptions for Simplify or FullSimplify must be simpler. expr = Conjugate[Sqrt[-(t Cos[2 kx] Cos[ky]) + Cos[kx] + M]]; sub = z -> -(t Cos[2 kx] Cos[ky]) + Cos[kx] + M; Simplify[expr /. Reverse[sub], z > 0] /. sub Sqrt[M + Cos[kx] - t*Cos[2*kx]*Cos[ky]] or expr /. Conjugate[Sqrt[pr_]] -> Sqrt[pr] Sqrt[M + Cos[kx] - t*Cos[2*kx]*Cos[ky]] Bob Hanlon ---- liblenovo <liblenovo at gmail.com> wrote: ============= In[86]:=Simplify[Conjugate[Sqrt[-(t Cos[2 kx] Cos[ky]) + Cos[kx] + M] ], -(t Cos[2 kx] Cos[ky]) + Cos[kx] + M > 0] Out[86]= Sqrt[-t cos(2 kx) cos(ky)+cos(kx)+M]^\[Conjugate] I don't want that ^\[Conjugate], why it is there?