#### This Week at ICERM

##### SageDays@ICERM: Combinatorics and Representation Theory

###### Monday, July 23, 2018

###### Tuesday, July 24, 2018

###### Wednesday, July 25, 2018

###### Thursday, July 26, 2018

###### Friday, July 27, 2018

##### Summer@ICERM 2018: Low Dimensional Topology and Geometry

###### Monday, July 23, 2018

Time | Event | Location | Materials |
---|---|---|---|

10:00 - 12:00 | Coloring Problem for Curve and Arc Graphs - Group Meeting | 10th Floor Classroom | |

1:30 - 3:00 | Symmetries of Curve Graph Variants - Group Meeting | 10th Floor Classroom | |

1:30 - 3:00 | Hausdorff Dimension and Hyperbolic Pair of Pants - Group Meeting | 11th Floor Conference Room | |

3:00 - 3:30 | Coffee/ Tea Break | 11th Floor Collaborative Space | |

3:30 - 4:30 | Total positivity and ping-pong in projective space - Jean-Philippe Burelle - IHES | 10th Floor Collaborative Space |

###### Tuesday, July 24, 2018

Time | Event | Location | Materials |
---|---|---|---|

10:00 - 12:00 | Self-intersection Number of Geodesics | 11th Floor Conference Room | |

10:00 - 12:00 | Navigating the Space of SL_2(C) Characters | 10th Floor Classroom | |

1:30 - 3:30 | Square Tilings - Bill Menasco- University of Buffalo | 10th Floor Collaborative Space | |

1:30 - 3:30 | Curves Intersecting Each Other Twice | 10th floor collaborative space (near office 1001) | |

3:30 - 4:00 | Coffee/ Tea Break | 11th Floor Collaborative Space |

###### Wednesday, July 25, 2018

Time | Event | Location | Materials |
---|---|---|---|

10:00 - 12:00 | Organizers Meeting | 11th floor Conference Room | |

3:00 - 3:30 | Coffee/ Tea Break | 11th Floor Collaborative Space | |

3:30 - 4:30 | TBD - Moon Duchin - Tufts University | 10th Floor Collaborative Space |

###### Thursday, July 26, 2018

Time | Event | Location | Materials |
---|---|---|---|

10:00 - 12:00 | Hausdorff Dimension and Hyperbolic Pair of Pants | 11th Floor Conference Room | |

10:00 - 12:00 | Symmetries of Curve Graph Variants | 10th Floor Classroom | |

1:30 - 3:30 | Coloring Problem for Curve and Arc Graphs | 10th Floor Classroom | |

3:00 - 3:30 | Coffee/ Tea Break | 11th Floor Collaborative Space | |

3:30 - 4:30 | Brown University's Mathematics Graduate Program Info Session - Tom Goodwillie- Brown University | 10th Floor Collaborative Space |

###### Friday, July 27, 2018

Time | Event | Location | Materials |
---|---|---|---|

10:00 - 12:00 | Square Tilings | 11th Floor Conference Room | |

1:30 - 2:30 | Navigating the Space of SL_2(C) Characters | 10th Floor Classroom | |

1:30 - 2:30 | Self-intersection Number of Geodesics | 11th Floor Conference Room | |

2:30 - 3:00 | Coffee/ Tea Break | 11th Floor Collaborative Space | |

3:00 - 4:00 | Women in Math - Moira Chas - Stony Brook University | 10th Floor Collaborative Space | |

4:00 - 5:00 | Diversity and Inclusion in grad school/mathematics - Marissa Loving, University of Illinois at Urbana- Champaign; Sunny Xiao, Brown University; Tarik Aougab- Brown University | 10th Floor Collaborate Space |

#### Upcoming Programs

#### Connect with ICERM

**July 20, 2018** - Group photo of this weeks Collaborate@ICERM group, Unipotent elements of the symmetric spaces of SL3(k) and SL4(k): Ellen Ziliak of Benedictine University, Catherine Buell of Fitchburg State University, Aloysius Helminck of College of Natural Sciences, University of Hawai'i at Manoa, Vicky Klima of Appalachian State University, Carmen Wright of Jackson State University, and Jennifer Schaefer of Dickinson College.

**July 20, 2018** - Inspiring stories about successful mathematicians from all over the world! twitter.com/womeninmaths/s…

**July 18, 2018** - Congratulations to Michael Musty, Sam Schiavone, Jeroen Sijsling and John Voight. Their paper "A database of Belyĭ maps" was selected as the winner of the Number Theory Foundation's 2018 Selfridge Prize in Number Theory, awarded to the best paper submitted to the 13th Algorithmic Number Theory Symposium (ANTS). #numbertheory http://www.math.grinnell.edu/~paulhusj/ants2018/

**July 18, 2018** - Congrats to Selfridge Prize in Number Theory winners Michael Musty, Sam Schiavone, Jeroen Sijsling and John Voight… twitter.com/i/web/status/1…

**July 18, 2018** - ICERM's founding director doing important work in DC. twitter.com/BrownUResearch…

**July 16, 2018** - Watch the spirals: you are getting sleepy...very sleepy... twitter.com/DrPaulynomial/…

**July 13, 2018** - Coming up on the 23rd, SageDays@ICERM! #sagedays #sagemath #python View the schedule: https://icerm.brown.edu/topical_workshops/tw18-1-sage/
and see which talks you'd like to catch on our Live Stream page: https://icerm.brown.edu/live-stream/

**July 12, 2018** - Streaming at 2pm tomorrow:
A basic Thurston contribution - the meaning of wallpaper symmetry- orbifolds. Dennis Sullivan of CUNY & Stony Brook University https://icerm.brown.edu/live-stream/

Poincare taught us how to construct periodic patterns by studying certain developments along paths in a space. This describes completely how unbranched covering spaces can be constructed by knowing the folded up space. EG the topology of the torus constructs the plane with the group of integral translations. This is remarkable.

Thurston taught how to construct wallpaper patterns with their symmetries from the folded up gadget which is more than a topological space, it is an orbifold which has an underlying topological space. It is remarkable that this insight of Thurston is the first new understanding of the reverse process of forming the quotient since the time of Poincare.

The talk will survey this a little and then use it to understand something about three-manifolds.

https://www.gc.cuny.edu/Page-Elements/Academics-Research-Centers-Initiatives/Doctoral-Programs/Mathematics/Faculty-Bios/Dennis-Sullivan

##### A Presidential Award for Mentoring

**June 26, 2018** - Ulrica Wilson represented one of 14 organizations recognized by the White House Office of Science and Technology Policy & the National Science Foundation.

##### Dr. Ronald E. Mickens Named 2018 Blackwell-Tapia Prize Recipient

**May 2, 2018** - The National Blackwell-Tapia Committee is pleased to announce that the 2018 Blackwell-Tapia Prize will be awarded to Dr. Ronald E. Mickens, the Distinguished Fuller E. Callaway Professor in the Department of Physics at Clark Atlanta University.

The prize will be presented at the Ninth Blackwell-Tapia Conference and Award Ceremony on Nov. 9-10, 2018, at the Institute for Computational and Experimental Research in Mathematics (ICERM) at Brown University in Providence, RI.

##### Andrea Bertozzi Elected to NAS

**May 1, 2018** - ICERM is pleased to share the news that Andrea Bertozzi, the founding chair of ICERM's Scientific Advisory Board, has been elected to the National Academy of Sciences. Andrea is known for her research in image segmentation, cooperative control of robotic vehicles, swarming, fluid interfaces, and crime modeling. Her ICERM public lecture on "The Mathematics of Crime" inspired the institute's 2016 "Predictive Policing" workshop.

##### ICERM Associate Director Elected a Fellow of the Society for Industrial and Applied Mathematics

**May 1, 2018** - Homer Walker, professor of mathematical sciences at Worcester Polytechnic Institute (WPI) and an ICERM consulting associate director, has been elected a fellow of the Society for Industrial and Applied Mathematics (SIAM)