Tropical Mathematics Seminar and Reading Group

We have been meeting since 2007 to learn about all aspects of tropical mathematics. We have an eclectic mix of completely informal discussion sessions, informal talks by members of the group and slightly more formal (sometimes!) talks by external speakers.

Our regular slot is on Tuesdays at 12:30 in Frank Adams 2, but we sometimes hold additional meetings at other times as circumstances dictate.

A very provisional programme for the second semester of 2013-14 is as follows. All talks are at 12:30 in room Frank Adams 2 unless otherwise noted.

  • Tuesday 4th February: Francoise Tisseur on Exploiting Tropical Algebra in Numerical Linear Algebra
  • Tuesday 11th February: Mark Kambites
  • Tuesday 18th February: No meeting (Warwick LMS meeting on Wednesday instead)
  • Tuesday 25th February: James Hook
  • Tuesday 4th March: Martin Lotz
  • Tuesday 11th March: David Wilding
  • Tuesday 18th March: Mark Muldoon
  • Tuesday 1st April: Marianne Johnson
  • Tuesday 29th April: Sergei Sergeev (Birmingham)
  • Tuesday 8th May: Meisam Sharify

Recent meetings and seminars

Autumn 2013

  • Tuesday 1st October: Marianne Johnson on Factoring Tropical Matrices
  • Tuesday 15th October: James Hook on Critical Path Statistics of Max-plus Systems with Noise
  • Tuesday 22nd October: David Wilding on Extensions and Non-extensions
  • November 12th: Meisam Sharify on Solutions of the Optimal Assignment Problem by Diagonal Scaling Algorithms
  • November 19th: Matthew Taylor on Deficiencies of finitary upper-triangular tropical matrices
  • December 10th: James Hook to lead informal discussion on dynamical and tropical aspects of numerical linear algebra

Spring/Summer 2013

  • Tuesday 5th February: James Hook
  • Tuesday 12th February: David Wilding
  • Tuesday 19th February: Mark Muldoon
  • Tuesday 26th February: LMS Workshop
  • Tuseday 5th March: External Speaker: Marie MacCaig - Integer solutions to maxlinear systems
  • Tuesday 12th March: Markus Pfeiffer
  • Tuesday 19th March: External Speaker: Alexander Tiskin - Tropical matrices in string algorithms
  • Tuesday 26th March: Easter Break
  • Tuesday 2nd April: Easter Break
  • Tuesday 9th April: Easter Break
  • Tuesday 16th April: Matthew Taylor to talk about tropical cryptography
  • Tuesday 23rd April: James Hook to talk about Asynchronous iterations
  • Tuesday 30th April at 14:00 in Frank Adams Room 1External Speaker: Marianne Akian
  • Tuesday 7th May: Meisam Sharify
  • Tuesday 14th May: David Wilding
  • Tuesday 21st May: David Wilding

Autumn 2012

  • Thursday 20th September (all day): Tropical Away Day in Buxton
  • Tuesday 25th September: Marianne Johnson to talk about gossip
  • Tuesday 2nd October: Marianne Johnson and James Hook to talk about gossip
  • Tuesday 9th October: Marianne Johnson
  • Tuesday 16th October: James Hook
  • Thursday 25th October at 14:00 in FA1External Speaker: Alexander Guterman
  • Tuesday 30th October: No Meeting (Reading Week)
  • Tuesday 6th November: External Speaker: Richard Parker
  • Tuesday 13th November: TBA
  • Tuesday 20th November: TBA
  • Tuesday 27th November: Markus Pfeiffer
  • Tuesday 4th December: Marianne Johnson
  • Tuesday 11th December: James Hook

Summer 2012

  • Tuesday 17th April: Geoff Evatt to talk about industrial applications
  • Monday 23rd April at 13:00CICADA Graduate Lectures on max-plus algebra
  • Tuesday 24th April: James Hook to talk about tropical methods in numerical analysis
  • Wednesday 25th April at 12:15: James Hook's talk at CICADA conference (Service rate guarantees for stochastic max-plus linear systems)
  • Wednesday 25th April at 16:00: Marianne Johnson's talk at CICADA conference (Groups of tropical matrices)
  • Thursday 26th April: CICADA Graduate Lectures examples class on max-plus algebra
  • Monday 30th April: CICADA Graduate Lectures on max-plus algebra
  • Tuesday 1st May: James Hook to talk about tropical methods in numerical analysis
  • Thursday 3rd May: CICADA Graduate Lectures on max-plus algebra
  • Tuesday 8th May: Mark Muldoon to talk about applications of algebraic geometry in chemistry
  • Tuesday 15th May: Francoise Tisseur to talk about using tropical scaling to improve computed eigenpairs
  • Tuesday 22nd May: Informal discussion on tropical eigenvalue problems
  • Thursday 31st May: James Hook to talk about the symmetrized tropical semiring
  • Tuesday 5th June: No meeting (bank holiday)
  • Friday 8th June: External Speaker: Vanni Noferini (Pisa)
  • Tuesday 12th June: Marianne Johnson to talk about tropical eigenvalues
  • Tuesday 19th June: Marianne Johnson to talk about the symmetrized tropical semiring
  • Tuesday 26th June: External Speaker: Ngoc Mai Tran (Berkeley)
  • Tuesday 3rd July: Marianne Johnson to talk about tropical eigenvectors and the memory loss property
  • Tuesday 10th July: External Speaker: Sergei Sergeev (Birmingham)

Spring 2012

  • Tuesday January 10th: informal discussion meeting (atrium bridge)
  • Tuesday January 17th: External speaker: Zur Izhakian (Bremen / Tel Aviv)
  • Tuesday January 24th: External speaker: Alexander Guterman (Moscow State)
  • Tuesday January 31st: informal discussion meeting
  • Tuesday February 7th: David Wilding to talk about kernels of matrices over semirings
  • Tuesday February 14th: Jürgen Pahle to talk about possible applications in biology
  • Tuesday February 21st: James Hook to lead discussion on geometry of examples
  • Tuesday February 28th: informal discussion meeting
  • Tuesday March 6th: Mark Kambites to talk about groups of tropical matrices
  • Tuesday March 13th: External speaker: Simon Willerton (Sheffield)
  • Tuesday March 20th: informal discussion meeting
  • Wednesday March 28th at 11:00: Philip Bridge to talk about categorical aspects of tropical geometry

Autumn 2011

  • Tuesday 27th September: Initial meeting to plan direction for the semester
  • Tuesday 4th October: Discussion of applications in biology/chemistry
  • Tuesday 11th October: James Hook to talk about stochastic max plus algebra
  • Tuesday 18th October: James Hook to lead discussion on the geometry of Petri nets
  • Tuesday 25th October: James Hook to lead discussion on the geometry of Petri nets
  • Tuesday 1st November: No meeting (reading week)
  • Tuesday 8th November: Mark Kambites to give an introduction to ranks of tropical matrices
  • Tuesday 15th November: External speaker: Jean-Eric Pin (LIAFA / Paris 7)
  • Tuesday 22nd November: James Hook to lead discussion on the geometry of Petri nets
  • Tuesday 29nd November: James Hook to lead discussion on the geometry of Petri nets
  • Tuesday 6th December: No meeting (too many people away!)
  • Tuesday 13th December: James Hook to lead discussion on the geometry of Petri nets
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