>
> *Please join us for the online Virtual Combinatorics Colloquium (VCC)
> Series: *
> https://sites.google.com/view/northeastcombinatoricsnetwork/virtual-combinatorics-colloquium
>
>
> *Date: *Tuesday, 3 December, 2019 at 2:00 p.m. (14:00) Eastern Standard
> Time
>
> *Speaker: *Sergi Elizalde, Dartmouth College
>
> *Title:* Consecutive Patterns in Permutations and Inversion Sequences
>
> *Zoom Link: *https://wpi.zoom.us/j/791224665 Join Meeting ID: 791-224-665
>
* Abstract: * An occurrence of a consecutive pattern σ in a permutation π
is a subsequence of adjacent entries of π in the same relative order as the
entries of σ. For example, occurrences of the consecutive pattern 21 are
descents, and alternating permutations are those that avoid the consecutive
patterns 123 and 321. Consecutive patterns also arise in the study of one
dimensional dynamical systems, and they are useful in distinguishing random
from deterministic time series. The talk will survey some work from the
last two decades on the enumeration of permutations avoiding consecutive
patterns, and on the classification of these patterns according to how many
permutations of a given length avoid them. It will also discuss some recent
work with Juan Auli regarding consecutive patterns in inversion sequences.
>
> Individuals and viewing party groups from around the world can "attend"
> these online talks and interact with the speaker and other attendees
> remotely via Zoom. It is very easy--Just click on the link below to join.
> If you have not used Zoom before, there may be a very brief download, but
> then you will be in the event. Here are quick instructions for joining a
> Zoom meeting if you would like more details:
> https://support.zoom.us/hc/en-us/articles/201362193-How-Do-I-Join-A-Meeting-
>
>
>
> The talk will start at the stated time, but the Zoom invitation will open
> 30 minutes earlier so that participants may call in early if they wish to
> get a sense of how the platform works (how to mute/unmute, share screens,
> shared whiteboard, raise hand, chat, etc.).
>
>
>
>
> Further information and upcoming talks may be found here:
>
>
> https://sites.google.com/view/northeastcombinatoricsnetwork/virtual-combinatorics-colloquium/upcoming-vccs
>
> We especially invited groups to host viewing parties
> <https://sites.google.com/view/northeastcombinatoricsnetwork/virtual-combinatorics-colloquium>
> for these events. However, To avoid the possibility of distraction and
> feedback noise, please keep your mic muted unless you or someone in your
> group has something particular to say.
>
>
>
> The *Northeast Combinatorics Network* (NCN) is funded by the US National
> Science Foundation.
>
> Activities, including *Discrete Math Days in the Northeast* (DMD), *Summer
> Combo in Vermont*, and the *Virtual Combinatorics Colloquium* (VCC), are
> detailed on the NCN website:
>
> Google Sites: Northeast Combinatorics Network
> <https://sites.google.com/view/northeastcombinatoricsnetwork/home>
>
> Email: northeastcombinatoricsnetwork@gmail.com
>
> YouTube Channel: Northeast
> Combinatorics Network
> <https://www.youtube.com/channel/UCQYSxI_EL0nhE9E6aZZra5Q>
>
>
> On behalf of the organizers: Jo Ellis-Monaghan and Bill Martin
>
> *Jo*
>
> Jo Ellis-Monaghan
>
> Chair, Department of Mathematics and Statistics (on sabbatical 2019-2020)
>
> Editor-in-Chief, PRIMUS
>
> Saint Michael's College
>
> One Winooski Park
>
> Colchester, VT 05439
>
>
>
> office: Jeanmarie 279
>
> website: http://academics.smcvt.edu/jellis-monaghan/
>
> phone: 802 654 2660
>
> fax: 802 654 2960
>
> e-mail: je <jellis-monaghan@smcvt.edu>llismonaghan@gmail.com
>
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