id: 06106877 dt: j an: 06106877 au: Nagy, Gábor V. ti: A combinatorial proof of Shapiro’s Catalan convolution. so: Adv. Appl. Math. 49, No. 3-5, 391-396 (2012). py: 2012 pu: Elsevier Science (Academic Press), San Diego, CA la: EN cc: ut: Catalan numbers; Shapiro convolution ci: li: doi:10.1016/j.aam.2012.07.002 ab: Summary: Shapiro proved an elegant convolution formula involving Catalan numbers of even index. This paper gives a combinatorial proof of his formula. In addition, we show that it is equivalent to an alternating convolution formula of central binomial coefficients. rv: