Respected Sushil Auluck, Thanks for your kind reply. As you said that the term means of order delta cube. But I just want to know the equation of that term. Means how that order delta cube, mathematically looks like. I asked this because, using that equation, I have to find the elastic constants. regards
Bipul Rakshit PhD in Physics Computational Research Lab. Barkatullah University, Bhopal 462 026, India Mob.: +919713445650 --- On Mon, 13/7/09, Sushil Auluck <saul...@iitk.ac.in> wrote: From: Sushil Auluck <saul...@iitk.ac.in> Subject: Re: [SIESTA-L] question about elastic constant To: SIESTA-L@listserv.uam.es Date: Monday, 13 July, 2009, 9:48 PM hi, that means terms of order delta cubed (delta**3)...... s.auluck > Dear Siesta Users, > I have read the paper > "S. Q. Wang, H. Q. Ye, J. Phys.: Condens. Matter 15 (2003) p. 5307." >  > Most of the thing is clear to me, except in Equation (7) what is "O(δ^3)" > ? What does 'O' here. > > > Please guide me for the same. > > > Bipul Rakshit > > PhD in Physics > > Computational Research Lab. > > Barkatullah University, > > Bhopal 462 026, India > > Mob.: +919713445650 > > > See the Web's breaking stories, chosen by people like you.. Check > out Yahoo! Buzz. http://in.buzz.yahoo.com/ ........................................................................ Prof. Sushil Auluck Phone:+91-512-6797092/6148 Department of Physics +91-512-6798177(Home) Indian Institute of Technology Cell :+91-9305548667 Kanpur 208016 (UP) Fax :+91-512-6790914 India E-mail:saul...@iitk.ac.in ...............................................:saul...@gmail.com http://www.iitk.ac.in/phy/People/phy_facvis.html http://www.iitk.ac.in/phy/New01/profile_SA.html ........................................................................ ~ See the Web's breaking stories, chosen by people like you. Check out Yahoo! Buzz. http://in.buzz.yahoo.com/
