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4_domaines_specialises:mathematiques:arguments_contre_eqnarray2 [2020/11/16 08:48]
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-====== Why not use `eqnarray`? ====== 
-The environment ''​eqnarray''​ is attractive for the 
-occasional user of mathematics in LaTeX documents: it seems to 
-allow aligned systems of equations. ​ Indeed it //does// supply such 
-things, but it makes a serious mess of spacing. ​ In the system: 
-<code latex> 
-  a & = & b + c \\ 
-  x & = & y - z 
-the spacing around the "​="​ signs is //not// that defined in the 
-metrics for the font from which the glyph comes --- it's 
-''​\arraycolsep'',​ which may be set to some very odd value for reasons 
-associated with real arrays elsewhere in the document. 
-The user is far better served by the 
-[[ctanpkg>​amsmath|amsmath]] package, which 
-provides an ''​align''​ environment,​ which is designed with 
-the needs of mathematicians in mind (as opposed to the convenience of 
-LaTeX programmers). ​ For this simple case (''​align''​ and 
-other [[ctanpkg>​amsmath|amsmath]] 
-alignment environments are capable of far greater 
-things), code as: 
-<code latex> 
-  a & = b + c \\ 
-  x & = y - z 
-The matter is discussed in more detail in a  
-[[https://​tug.org/​pracjourn/​2006-4/​madsen/​madsen.pdf|PracTeX journal paper]] 
-by Lars Madsen; Stefan Kottwitz offers a  
-[[http://​texblog.net/​latex-archive/​maths/​eqnarray-align-environment/​|TeX blog entry]] 
-which includes screen shots of the output, convincingly demonstrating 
-the problem. 
-//Source:// [[faquk>​FAQ-eqnarray|Why not use `eqnarray`?​]] 
-metatag-og:​title=(Why not use `eqnarray`?​) 
-metatag-og:​site_name=(FAQ LaTeX francophone) 
4_domaines_specialises/mathematiques/arguments_contre_eqnarray2.1605512934.txt.gz · Dernière modification: 2020/11/16 08:48 par yannick.tanguy
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