[seqfan] Re: Announcement: 2015 John Riordan Prize awarded to Max. A. Alekseyev

Max Alekseyev maxale at gmail.com
Tue Jan 26 04:59:46 CET 2016


Dear SeqFans,

My paper is now available at http://arxiv.org/abs/1601.06158
Comments are always welcome.

Regards,
Max


On Fri, Jan 22, 2016 at 10:52 AM, Max Alekseyev <maxale at gmail.com> wrote:

> Dear All,
>
> I'm truly honored to receive this prize named after the great
> mathematician John Riordan. In fact, his "Combinatorial Identities" is one
> of my favorite books on combinatorics. As you know, I'm also very
> passionate about contributing to the OEIS, although recently the academic
> and family duties do not permit me to be as active in this respect as I was
> some years ago. So this prize bears a personal connotation for me.
> On the other hand, I feel somewhat sorry for "stealing" the prize from
> other nominees, whose results--I'm sure--are of no less value for the OEIS
> and the mathematics in general. So I encourage everybody to reflect these
> results in the corresponding sequences and/or publish them as appropriate.
>
> I personally thank Neil, the OEIS Foundation, and the Prize Committee for
> starting this prize initiative, bringing additional publicity for the OEIS
> and possibly attracting attention of researchers from outside the OEIS
> community. I hope the Riordan Prize will be awarded on a regular basis in
> future.
>
> P.S. I've uploaded my laureate paper to arxiv.org, where it will be
> publicly available early next week.
>
> Regards,
> Max
>
>
> On Thu, Jan 21, 2016 at 9:17 PM, Neil Sloane <njasloane at gmail.com> wrote:
>
>> Dear Sequence Fans:
>>
>> The 2015 John Riordan Prize Committee reached its decision today -- the
>> prize will be awarded to Max. A. Alekseyev of George Washington
>> University.
>>
>> The following announcement has been added to the OEIS Wiki page
>> describing the Riordan Prize: https://oeis.org/wiki/RiordanPrize.
>>
>> Neil Sloane, President, The OEIS Foundation, Inc.
>>
>> ---------------------------------------------------------------------
>> Announcement: 2015 John Riordan Prize awarded to Max. A. Alekseyev
>>
>> January 20 2016. Max. A. Alekseyev of George Washington University will
>> receive the 2015 John Riordan Prize from the OEIS Foundation for the
>> results in his paper "On Enumeration of Paths in Catalan-Schroeder
>> Lattices" (to appear on the arXiv). The John Riordan Prize comes with a
>> $1000 prize from the OEIS Foundation.
>>
>> The classical Catalan and Large Schroeder numbers respectively count
>> below-diagonal paths from (0,0) to (n,n) in two classes of directed
>> graphs.
>> In his paper, Alekseyev counts paths in a graph which looks like the
>> Catalan graph below the diagonal and the Schroeder graph above the
>> diagonal. From this he is able to find generating functions for 22
>> sequences (A026769-A026779, A026780-A026790) which had been in the On-Line
>> Encyclopedia of Integer Sequences (the OEIS, https://oeis.org) for
>> sixteen
>> years without any formula being discovered.
>>
>> The 2015 John Riordan Prize was offered for the best solution in 2015 to
>> an
>> open problem in the OEIS. Twenty-three nominations were received, and the
>> decision was not an easy one. The deciding factor in awarding the prize to
>> Max. Alekseyev was the unexpected nature of his result (this was much more
>> than finding a proof for an already-conjectured formula), the number of
>> sequences to which it could be applied, and the number of years they had
>> been in the OEIS.
>>
>> _______________________________________________
>>
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>>
>
>



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