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        Summary 
         en:John Wallis, English mathematician with important contributions to analysis.
        Source:  en:Image:John_Wallis.jpg
         Licensing 
        
         
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          Permission is granted to copy, distribute and/or modify this document under the terms of the  GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.  Subject to  disclaimers.www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue 
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