# Difference between revisions of "Probability Seminar"

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− | == January 23, 2020, Timo Seppalainen (UW Madison) == | + | == January 23, 2020, [https://www.math.wisc.edu/~seppalai/ Timo Seppalainen] (UW Madison) == |

'''Non-existence of bi-infinite geodesics in the exponential corner growth model | '''Non-existence of bi-infinite geodesics in the exponential corner growth model | ||

''' | ''' | ||

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Whether bi-infinite geodesics exist has been a significant open problem in first- and last-passage percolation since the mid-80s. A non-existence proof in the case of directed planar last-passage percolation with exponential weights was posted by Basu, Hoffman and Sly in November 2018. Their proof utilizes estimates from integrable probability. This talk describes an independent proof completed 10 months later that relies on couplings, coarse graining, and control of geodesics through planarity and increment-stationary last-passage percolation. Joint work with Marton Balazs and Ofer Busani (Bristol). | Whether bi-infinite geodesics exist has been a significant open problem in first- and last-passage percolation since the mid-80s. A non-existence proof in the case of directed planar last-passage percolation with exponential weights was posted by Basu, Hoffman and Sly in November 2018. Their proof utilizes estimates from integrable probability. This talk describes an independent proof completed 10 months later that relies on couplings, coarse graining, and control of geodesics through planarity and increment-stationary last-passage percolation. Joint work with Marton Balazs and Ofer Busani (Bristol). | ||

− | == January 30, 2020, Scott Smith (UW Madison) == | + | == January 30, 2020, [https://www.math.wisc.edu/people/vv-prof-directory Scott Smith] (UW Madison) == |

− | ''' | + | ''' ''' |

− | == February 6, 2020, Cheuk-Yin Lee (Michigan State) == | + | == February 6, 2020, [https://sites.google.com/site/cyleeken/ Cheuk-Yin Lee] (Michigan State) == |

− | ''' | + | ''' ''' |

− | == February 13, 2020, Jelena Diakonikolas (UW Madison) == | + | == February 13, 2020, [http://www.jelena-diakonikolas.com/ Jelena Diakonikolas] (UW Madison) == |

− | ''' | + | ''' ''' |

− | == February 20, 2020, Philip Matchett Wood (UC Berkeley) == | + | == February 20, 2020, [https://math.berkeley.edu/~pmwood/ Philip Matchett Wood] (UC Berkeley) == |

− | ''' | + | ''' ''' |

== February 27, 2020, TBA == | == February 27, 2020, TBA == | ||

− | ''' | + | ''' ''' |

− | == March 5, 2020, Jiaoyang Huang (IAS) == | + | == March 5, 2020, [https://www.ias.edu/scholars/jiaoyang-huang Jiaoyang Huang] (IAS) == |

− | ''' | + | ''' ''' |

== March 12, 2020, TBA == | == March 12, 2020, TBA == | ||

− | ''' | + | ''' ''' |

− | == March 26, 2020, Philippe Sosoe (Cornell) == | + | == March 26, 2020, [https://math.cornell.edu/philippe-sosoe Philippe Sosoe] (Cornell) == |

− | ''' | + | ''' ''' |

== April 2, 2020, TBA == | == April 2, 2020, TBA == | ||

− | ''' | + | ''' ''' |

== April 9, 2020, TBA == | == April 9, 2020, TBA == | ||

− | ''' | + | ''' ''' |

== April 16, 2020, TBA == | == April 16, 2020, TBA == | ||

− | ''' | + | ''' ''' |

− | == April 22-24, 2020, FRG Integrable Probability meeting == | + | == April 22-24, 2020, [http://frg.int-prob.org/ FRG Integrable Probability] meeting == |

+ | 3-day event in Van Vleck 911 | ||

− | == April 30, 2020, Will Perkins (University of Illinois at Chicago) == | + | == April 23, 2020, [http://www.hairer.org/ Martin Hairer] (Imperial College) == |

− | ''' | + | |

+ | [https://www.math.wisc.edu/wiki/index.php/Colloquia Wolfgang Wasow Lecture] at 4pm in Van Vleck 911 | ||

+ | |||

+ | == April 30, 2020, [http://willperkins.org/ Will Perkins] (University of Illinois at Chicago) == | ||

+ | ''' ''' | ||

## Revision as of 11:28, 19 January 2020

# Spring 2020

**Thursdays in 901 Van Vleck Hall at 2:30 PM**, unless otherwise noted.
**We usually end for questions at 3:20 PM.**

If you would like to sign up for the email list to receive seminar announcements then please send an email to join-probsem@lists.wisc.edu

## January 23, 2020, Timo Seppalainen (UW Madison)

**Non-existence of bi-infinite geodesics in the exponential corner growth model**

Whether bi-infinite geodesics exist has been a significant open problem in first- and last-passage percolation since the mid-80s. A non-existence proof in the case of directed planar last-passage percolation with exponential weights was posted by Basu, Hoffman and Sly in November 2018. Their proof utilizes estimates from integrable probability. This talk describes an independent proof completed 10 months later that relies on couplings, coarse graining, and control of geodesics through planarity and increment-stationary last-passage percolation. Joint work with Marton Balazs and Ofer Busani (Bristol).

## January 30, 2020, Scott Smith (UW Madison)

** **

## February 6, 2020, Cheuk-Yin Lee (Michigan State)

** **

## February 13, 2020, Jelena Diakonikolas (UW Madison)

** **

## February 20, 2020, Philip Matchett Wood (UC Berkeley)

** **

## February 27, 2020, TBA

** **

## March 5, 2020, Jiaoyang Huang (IAS)

** **

## March 12, 2020, TBA

** **

## March 26, 2020, Philippe Sosoe (Cornell)

** **

## April 2, 2020, TBA

** **

## April 9, 2020, TBA

** **

## April 16, 2020, TBA

** **

## April 22-24, 2020, FRG Integrable Probability meeting

3-day event in Van Vleck 911

## April 23, 2020, Martin Hairer (Imperial College)

Wolfgang Wasow Lecture at 4pm in Van Vleck 911

## April 30, 2020, Will Perkins (University of Illinois at Chicago)

** **