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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Dear Stefan<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I do not use TeXwork to prepare file, but I use TeXwork to browse it. If I use Adobe than I need close file before translation, and this is not convenient. However I face similar problem in TeXwork.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I do not think this happens only for large documents. I saw such problem with document when it had few pages. And probably it depends on macro that I use. Very interesting that when I use babel package the problem disappear.</span><span lang=RU style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span lang=RU style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>And the last. I delayed my answer because it appears that problem appears not every time. I agree with your description of possible reason. So one of reason I suspected was high load on CPU. However yesterday even CPU was sometimes had about 80% I did not face the problem. Today first compilation brings me the gray screen. I prepared as you advised bat file with command <o:p></o:p></span></p><p class=MsoPlainText>COPY /B file.pdf+,,file.pdf<o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>I was thinking that because texworks shows page -1 of 0, and it means that it assumes file corrupted. Usually after this when recompile file screen does not refresh. But in this case your command worked fine and I saw new text after compilation. So I will keep this command, I think it is very useful.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Thank you very much <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.5pt;font-family:Consolas;color:#1F497D'>Aleks Kleyn</span><span style='color:#1F497D'><o:p></o:p></span></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 style='border-collapse:collapse'><tr><td width=734 valign=top style='width:275.4pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal style='line-height:115%'><a href="http://alekskleyn.dyndns-home.com:4080/"><span style='font-size:10.5pt;line-height:115%;font-family:Consolas'>http://alekskleyn.dyndns-home.com:4080/</span></a><span style='font-size:10.5pt;line-height:115%;font-family:Consolas;color:#1F497D'> </span><span style='font-size:12.0pt;line-height:115%;color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='line-height:115%'><a href="http://sites.google.com/site/alekskleyn/"><span style='font-size:10.5pt;line-height:115%;font-family:Consolas'>http://sites.google.com/site/AleksKleyn/</span></a><span style='font-size:10.5pt;line-height:115%;font-family:Consolas;color:#1F497D'> </span><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='line-height:115%'><a href="http://arxiv.org/a/kleyn_a_1"><span style='font-size:10.5pt;line-height:115%;font-family:Consolas'>http://arxiv.org/a/kleyn_a_1</span></a><span style='font-size:10.5pt;line-height:115%;font-family:Consolas;color:#1F497D'> </span><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='line-height:115%'><a href="http://AleksKleyn.blogspot.com/"><span style='font-size:10.5pt;line-height:115%;font-family:Consolas'>http://AleksKleyn.blogspot.com/</span></a><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='line-height:115%'><a href="http://kleynaleks.blogspot.com/"><span style='font-size:10.5pt;line-height:115%;font-family:Consolas'>http://KleynAleks.blogspot.com/</span></a><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='line-height:115%'><span style='font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif";color:#1F497D'><o:p> </o:p></span></p></td><td width=466 valign=top style='width:174.85pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal style='line-height:115%'><span style='color:#1F497D'>Derivative in Banach algebra</span><span style='font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 style='border-collapse:collapse'><tr><td valign=top style='padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal style='line-height:115%'><i><u><span style='font-family:"Cambria","serif";color:#1F497D'>dx<sup>2</sup></span></u></i><i><u><sup><span style='font-size:12.0pt;line-height:115%;font-family:"Cambria","serif";color:#1F497D'><o:p></o:p></span></sup></u></i></p></td><td rowspan=2 style='padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal style='line-height:115%'><i><span style='font-family:"Cambria","serif";color:#1F497D'>=1</span></i><i><span style='font-family:"Cambria Math","serif";color:#1F497D'>⊗ </span></i><i><span style='font-family:"Cambria","serif";color:#1F497D'>x+x</span></i><i><span style='font-family:"Cambria Math","serif";color:#1F497D'>⊗</span></i><i><span style='font-family:"Cambria","serif";color:#1F497D'>1</span></i><span style='font-size:12.0pt;line-height:115%;font-family:"Cambria","serif";color:#1F497D'><o:p></o:p></span></p></td></tr><tr><td valign=top style='padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal style='line-height:115%'><i><span style='font-family:"Cambria","serif";color:#1F497D'>dx</span></i><i><span style='font-size:12.0pt;line-height:115%;font-family:"Cambria","serif";color:#1F497D'><o:p></o:p></span></i></p></td></tr></table><p class=MsoNormal style='line-height:115%'><i><span style='font-family:"Cambria","serif";color:#1F497D'> d<sub> </sub>x<sup>2</sup> =(1</span></i><i><span style='font-family:"Cambria Math","serif";color:#1F497D'>⊗ </span></i><i><span style='font-family:"Cambria","serif";color:#1F497D'>x+x</span></i><i><span style='font-family:"Cambria Math","serif";color:#1F497D'>⊗</span></i><i><span style='font-family:"Cambria","serif";color:#1F497D'>1)</span></i><i><span style='color:#1F497D'> ◦dx</span></i><i><span style='font-family:"Cambria","serif";color:#1F497D'>=dx x+x dx</span></i><span style='font-size:12.0pt;line-height:115%;font-family:"Cambria","serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='line-height:115%'><span style='font-size:12.0pt;line-height:115%;font-family:"Times New Roman","serif";color:#1F497D'><o:p> </o:p></span></p></td></tr></table><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p></div></body></html>