Riordan arrays have been introduced in 1991 by L. W. Shapiro, S. Getu, W. J. Woan and L. Woodson with the aim of defining a class of infinite lower triangular arrays with properties analogous to those of the Pascal triangle. Few years later, in 1994, R. Sprugnoli pointed out the importance of these matrices in the computation of combinatorial sums. Since then Riordan arrays have attracted, and continue to attract, much attention in the literature. In particular, the algebraic structure of these matrices, their relationship with the computation of combinatorial sums and many combinatorial applications have been studied over the years.

The first meeting on "Riordan Arrays and Related Topics" was held on August 6-9, 2014 in Seoul, South Korea, as one of eight invited minisymposiums in the 19th International Linear Algebra Society Conference (ILAS2014).

The second meeting will be held on July 14-16, 2015, in Lecco (on lake Como), Italy, and will be organized in honor of Lou Shapiro and Renzo Sprugnoli, in consideration of all their important contributions on the topic. The symposium will gather together researchers from all over the globe world to present some of their most important recent results on the theory and applications of Riordan arrays and the Riordan group.

The meeting will includes invited lectures (30 or 40 minutes) and contributed talks (20 minutes). The meeting also includes a social dinner and an excursion.

The general topic of the symposium is the theory and application of Riordan arrays. Its goal is to highlight the most salient trends in the field. Particular areas of interest include (but are not limited to) the algebraic structure of Riordan arrays, Riordan arrays and combinatorial sums, Sheffer matrices, Umbral Calculus, lattice paths theory, combinatorics of posets, lattices and words, and many other aspects of combinatorics and their relations with other parts of mathematics, computer science, physics and biology.

• Early registration (ordinary): 130 Euro, from January 1^st, 2015, to May 31, 2015
• Early registration (students):  80 Euro, from January 1^st, 2015, to May 31, 2015
• Late registration (ordinary): 180 Euro, from June 1^st, 2015, to June 31, 2015
• Late registration (students): 120 Euro, from June 1^st, 2015, to June 31, 2015
• Accompanying persons: 30 Euro, for the social dinner (to be paid during the conference)

The registration fee also includes the coffee breaks and the social dinner.
The registration fee does not include the excursion (to be paid during the conference).

• All abstracts must be submitted in English and should not exceed one page.
  
• Download this LaTeX file template.
• Use this file to generate your abstract.
• Rename the resulting file with your last name.
• Send this .tex and .pdf file to rart2015@polimi.it

• Venue Map
• Campus Map
• Michelin route planner and maps
• Accommodation

How to reach the conference venue from Lecco railway station:

		Bus: walk to Via Montello, take the bus 8, direction Germanedo, Via Amendola - La Piccola; walk 100 meters to destination.
		Walk (1.1 km or 1 mi, ~17 min.): take Via Salvatore Sassi, Via Marco D'Oggiono, Via Digione to Via Giovanni Amendola; then turn right and walk up to Via Gaetano Previati (on the left, before the traffic lights); turn left and walk 100 meters to destination.

• How to reach Lecco
• Timetable and costs of trains: Trenitalia (English version)
• Weather in Lecco
• Local Time
• Lake Como (Lago di Como)