Hello Eric, Thank you for answering. My question refers to the type of mathematical model or method that possesses Chimera, for example, if it is based on the equation of Schrödinger, semiempirical method, model of Hückel, methods of quantum mechanics, molecular mechanics, among others. If you use either of those models or methods to represent and model molecular structures, etc. Thank you. Vladimir Quintero Leon Department of chemistry Faculty of science and technology National Pedagogical University Bogotá, Colombia. ________________________________ De: Eric Pettersen <pett@cgl.ucsf.edu> Enviado: lunes, 25 de abril de 2016 16:30 Para: VLADIMIR QUINTERO LEON Cc: chimera-users@cgl.ucsf.edu Asunto: Re: [Chimera-users] Information mathematical model Hi Vladimir, I'm not 100% certain what your question means, but if you're asking what the units of Chimera's coordinate system is, they're angstroms. Otherwise, if you're asking about some specific feature of Chimera, please try to elaborate. You also might consider asking an English-speaking colleague to try to help you formulate the question, or run your question through translate.google.com<http://translate.google.com> and use the result. [http://upload.wikimedia.org/wikipedia/commons/thumb/3/30/Googlelogo.png/220px-Googlelogo.png]<http://translate.google.com/> Google Translate<http://translate.google.com/> translate.google.com Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages. English, Afrikaans, Albanian, Amharic, Arabic ... -Eric Eric Pettersen UCSF Computer Graphics Lab On Apr 22, 2016, at 8:33 AM, VLADIMIR QUINTERO LEON <dqu_vquintero714@pedagogica.edu.co<mailto:dqu_vquintero714@pedagogica.edu.co>> wrote: Hi, I'm doing a consultation on the mathematical model that works UCSF Chimera. I appreciate that you could provide that information. This query only has academic purposes. Excuse me, I don't speak English. Best regard, Vladimir Quintero León Departamento de Química Facultad de Ciencia y Tecnología Universidad Pedagógica Nacional Bogotá, Colombia. _______________________________________________ Chimera-users mailing list: Chimera-users@cgl.ucsf.edu<mailto:Chimera-users@cgl.ucsf.edu> Manage subscription: http://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users