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          Volume 8, Issue 1, Article 22 | 
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             On the Behavior of $r-$derivative Near the Origin of Sine Series with Convex Coefficients
 
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          Authors:  | 
          Xh. Z. Krasniqi, N. L. Braha,  | 
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          Keywords: 
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          Sine series, Convex coefficients. | 
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          Date Received: 
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          04/08/06 | 
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          Date Accepted: 
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          21/12/06 | 
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          Subject Codes: | 
           
             42A15, 42A32. 
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          Editors:  | 
          Hüseyin Bor,   | 
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          Abstract: | 
           
              In this paper we will give the behavior of the r-derivative near origin of sine series with convex coefficients.
             
          
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