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					Originally Posted by  Doitsu
					 
				 
				
			
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 Many thanks Doitsu. That means that ADE 4.0 for Windows is a washout 

 I knew the formula was fine because under Gitden Reader (for Android) and even EpubReader for Firefox I could see the expression as expected but I couldn't get the same result with ADE. Now I know it was because ADE 4.0 -for Windows- DOESN'T SUPPORT MATHML. So, ADE 4 is to epub3 what ADE 3/2 is to epub2 

 (at least, under Windows)