Louis W. Shapiro

Gi-Sang Cheon, Louis W. Shapiro: The uplift principle for ordered trees. Appl. Math. Lett. 25(6): 1010-1015 (2012)

Gi-Sang Cheon, Hana Kim, Louis W. Shapiro: Combinatorics of Riordan arrays with identical A and Z sequences. Discrete Mathematics 312(12-13): 2040-2049 (2012)

Gi-Sang Cheon, Hana Kim, Louis W. Shapiro: The hitting time subgroup, Lukasiewicz paths and Faber polynomials. Eur. J. Comb. 32(1): 82-91 (2011)

Gi-Sang Cheon, Sang-Gu Lee, Louis W. Shapiro: The Fine numbers refined. Eur. J. Comb. 31(1): 120-128 (2010)

Gi-Sang Cheon, Hana Kim, Louis W. Shapiro: A generalization of Lucas polynomial sequence. Discrete Applied Mathematics 157(5): 920-927 (2009)

Gi-Sang Cheon, Sung-Tae Jin, Hana Kim, Louis W. Shapiro: Riordan group involutions and the Delta-sequence. Discrete Applied Mathematics 157(8): 1696-1701 (2009)

Gi-Sang Cheon, Louis W. Shapiro: Protected points in ordered trees. Appl. Math. Lett. 21(5): 516-520 (2008)

William Y. C. Chen, Nelson Y. Li, Louis W. Shapiro: The butterfly decomposition of plane trees. Discrete Applied Mathematics 155(17): 2187-2201 (2007)

William Y. C. Chen, Nelson Y. Li, Louis W. Shapiro, Sherry H. F. Yan: Matrix identities on weighted partial Motzkin paths. Eur. J. Comb. 28(4): 1196-1207 (2007)

Chunmei Liu, Yinglei Song, Louis W. Shapiro: RNA Folding Including Pseudoknots: A New Parameterized Algorithm and Improved Upper Bound. WABI 2007: 310-322

William Y. C. Chen, Louis W. Shapiro, Laura L. M. Yang: Parity reversing involutions on plane trees and 2-Motzkin paths. Eur. J. Comb. 27(2): 283-289 (2006)

Louis W. Shapiro: Bijections and the Riordan group. Theor. Comput. Sci. 307(2): 403-413 (2003)

Emeric Deutsch, Louis W. Shapiro: A bijection between ordered trees and 2-Motzkin paths and its many consequences. Discrete Mathematics 256(3): 655-670 (2002)

Emeric Deutsch, Louis W. Shapiro: A survey of the Fine numbers. Discrete Mathematics 241(1-3): 241-265 (2001)

Louis W. Shapiro, Richard Ehrenborg, John W. Moon, Michael Reid: Leaves of Ordered Trees: 10753. The American Mathematical Monthly 108(9): 873-874 (2001)

Louis W. Shapiro: Random Walks with Absorbing Points. Discrete Applied Mathematics 39(1): 57-67 (1992)

Seyoum Getu, Louis W. Shapiro, Wen-Jin Woan, Leon C. Woodson: How to Guess a Generating Function. SIAM J. Discrete Math. 5(4): 497-499 (1992)

Louis W. Shapiro, Seyoum Getu, Wen-Jin Woan, Leon C. Woodson: The Riordan group. Discrete Applied Mathematics 34(1-3): 229-239 (1991)

Louis W. Shapiro: Voting blocks, reluctant functions, and a formula of Hurwitz. Discrete Mathematics 87(3): 318-322 (1991)

Louis W. Shapiro, A. B. Stephens: Bootstrap Percolation, the Schröder Numbers, and the N-Kings Problem. SIAM J. Discrete Math. 4(2): 275-280 (1991)

Seyoum Getu, Louis W. Shapiro, Wen-Jin Woan: Product-Weighted Lead Codes Revisited. J. Comb. Theory, Ser. A 33(1): 112-116 (1982)

Louis W. Shapiro: A combinatorial proof of a Chevyshev polynomial identity. Discrete Mathematics 34(2): 203-206 (1981)

Robert Donaghey, Louis W. Shapiro: Motzkin Numbers. J. Comb. Theory, Ser. A 23(3): 291-301 (1977)

Louis W. Shapiro: A Short Proof of an Identity of Touchard's Concerning Catalan Numbers. J. Comb. Theory, Ser. A 20(3): 375-376 (1976)