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          Volume 8, Issue 1, Article 4 | 
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             On an Opial Inequality with a Boundary Condition
 
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          Authors:  | 
          Man Kam Kwong,  | 
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          Keywords: 
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          Opial inequality, Integral condition, Calculus of variation. | 
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          Date Received: 
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          01/11/06 | 
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          Date Accepted: 
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          08/03/07 | 
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          Subject Codes: | 
           
             26D10, 26D15. 
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          Editors:  | 
          Don B. Hinton,   | 
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          Abstract: | 
           
              R.C. Brown conjectured (in 2001) that the Opial-type inequality    holds for all absolutely continuous functions    such that    and   . This was subsequently proved by Denzler [3]. An alternative proof was given by Brown and Plum [2]. Here we give a shorter proof.
            
          
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