标题：Best approximations for the Laguerre-type Weierstrass transform on <mml:math alttext="$[0, \infty[\times\mathbb{R}$" id="E1" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mo>[</mml:mo><mml:mrow><mml:mn>0</mml:mn><mml:mo>,</mml:mo><mml:mi>∞</mml:mi><mml:mrow><mml:mo>[</mml:mo><mml:mrow><mml:mo>×</mml:mo><mml:mi>ℝ</mml:mi></mml:mrow></mml:mrow></mml:mrow></mml:mrow></mml:math>
期刊名称：International Journal of Mathematics and Mathematical Sciences
印刷版ISSN：0161-1712
电子版ISSN：1687-0425
出版年度：2005
卷号：2005
DOI：10.1155/IJMMS.2005.2757
出版社：Hindawi Publishing Corporation
摘要：We use reproducing kernel Hilbert spaces to give the best approximation for Laguerre-type Weierstrass transform. Estimates of extremal functions are also discussed.
