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Professor Adam Letchford

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  1. Vehicle routing games

    Letchford, A. (Speaker)

    03/2005

    Activity: Talk or presentation types › Invited talk

  2. Vehicle routing games

    Letchford, A. (Speaker)

    01/2005

    Activity: Talk or presentation types › Invited talk

  3. University of Pisa

    Letchford, A. (Visiting researcher)

    03/2019

    Activity: Business or School/HEI Engagement › Visiting an external academic institution

  4. University of L'Aquila

    Letchford, A. (Visiting researcher)

    28/11/2022 → 2/12/2022

    Activity: Business or School/HEI Engagement › Visiting an external academic institution

  5. The Travelling Salesman Problem

    Letchford, A. (Speaker)

    04/2010

    Activity: Talk or presentation types › Invited talk

  6. The traveling salesman problem: inequalities and separation

    Letchford, A. (Speaker)

    07/2004

    Activity: Talk or presentation types › Invited talk

  7. The traveling salesman problem: inequalities and separation

    Letchford, A. (Speaker)

    04/2004

    Activity: Talk or presentation types › Invited talk

  8. The traveling salesman problem: inequalities and separation

    Letchford, A. (Speaker)

    09/2003

    Activity: Talk or presentation types › Invited talk

  9. The traveling salesman problem: inequalities and separation

    Letchford, A. (Speaker)

    12/2003

    Activity: Talk or presentation types › Invited talk

  10. The polyhedral approach to the TSP

    Letchford, A. (Invited speaker)

    22/09/1999

    Activity: Talk or presentation types › Invited talk

  11. The Operational Research Society (External organisation)

    Letchford, A. (Member)

    2000 → …

    Activity: Membership types › Member of an organisation

  12. Symposium on Operations Research

    Letchford, A. (Speaker)

    1/09/1999 → 3/09/1999

    Activity: Participating in or organising an event types › Participation in conference - Academic

  13. Stronger upper bounds for the maximum stable set problem

    Letchford, A. (Speaker)

    02/2007

    Activity: Talk or presentation types › Invited talk

  14. Stronger multi-commodity flow formulations of the capacitated vehicle routing problem

    Letchford, A. (Speaker)

    21/05/2014

    Activity: Talk or presentation types › Invited talk

  15. Strengthening the reformulation-linearisation technique with cutting planes

    Letchford, A. (Speaker)

    04/2013

    Activity: Talk or presentation types › Invited talk

  16. Spring School on Vehicle Routing

    Letchford, A. (Invited speaker)

    05/2006

    Activity: Participating in or organising an event types › Participation in conference - Academic

  17. Some unbounded convex sets arising in non-convex MIQP

    Letchford, A. (Speaker)

    12/04/2013

    Activity: Talk or presentation types › Invited talk

  18. Solving discrete optimization problems by branch-and-cut

    Letchford, A. (Speaker)

    01/2005

    Activity: Talk or presentation types › Invited talk

  19. Solving discrete optimization problems by branch-and-cut

    Letchford, A. (Speaker)

    03/2004

    Activity: Talk or presentation types › Invited talk

  20. Solving discrete optimization problems by branch-and-cut

    Letchford, A. (Speaker)

    09/2003

    Activity: Talk or presentation types › Invited talk

  21. Solving discrete optimisation problems by branch-and-cut

    Letchford, A. (Speaker)

    03/2003

    Activity: Talk or presentation types › Invited talk

  22. SIAM Conference on Optimization

    Letchford, A. (Invited speaker)

    05/2011

    Activity: Participating in or organising an event types › Participation in conference - Academic

  23. Semidefinite programming and combinatorial optimization

    Letchford, A. (Speaker)

    11/2006

    Activity: Talk or presentation types › Invited talk

  24. Second order cone programming and its applications

    Letchford, A. (Speaker)

    02/2012

    Activity: Talk or presentation types › Invited talk

  25. Reformulation of 0-1 quadratically constrained quadratic programs

    Letchford, A. (Speaker)

    10/2010

    Activity: Talk or presentation types › Invited talk

  26. Reformulating mixed-integer quadratically-constrained quadratic programmes

    Letchford, A. (Speaker)

    03/2011

    Activity: Talk or presentation types › Invited talk

  27. Recent progress on knapsack-based cutting planes

    Letchford, A. (Speaker)

    01/2009

    Activity: Talk or presentation types › Invited talk

  28. Progress on the uncapacitated facility location problem

    Letchford, A. (Speaker)

    4/09/2024

    Activity: Talk or presentation types › Invited talk

  29. Primal separation algorithms

    Letchford, A. (Speaker)

    04/2001

    Activity: Talk or presentation types › Invited talk

  30. Planar graphs and the traveling salesman problem

    Letchford, A. (Speaker)

    03/2005

    Activity: Talk or presentation types › Invited talk

  31. Optimization 2007

    Letchford, A. (Keynote/plenary speaker)

    07/2007

    Activity: Participating in or organising an event types › Participation in conference - Academic

  32. Optimisation over cones

    Letchford, A. (Speaker)

    04/2010

    Activity: Talk or presentation types › Invited talk

  33. Operations Research (Journal)

    Letchford, A. (Associate Editor)

    2012 → 2018

    Activity: Publication peer-review and editorial work types › Editorial activity

  34. On traveling salesman games

    Letchford, A. (Speaker)

    01/2003

    Activity: Talk or presentation types › Invited talk

  35. On non-convex quadratic programming with box constraints

    Letchford, A. (Speaker)

    04/2009

    Activity: Talk or presentation types › Invited talk

  36. Oberwolfach Workshop on Combinatorial Optimisation

    Letchford, A. (Invited speaker)

    01/1999

    Activity: Participating in or organising an event types › Participation in conference - Academic

  37. Mixed-Integer Programming Workshop (MIP 2008)

    Letchford, A. (Invited speaker)

    08/2008

    Activity: Participating in or organising an event types › Participation in conference - Academic

  38. Mixed-Integer Programming Workshop

    Letchford, A. (Member of programme committee)

    2005

    Activity: Participating in or organising an event types › Participation in conference - Academic

  39. Mixed-integer non-linear programming: a survey

    Letchford, A. (Speaker)

    10/2010

    Activity: Talk or presentation types › Invited talk

  40. Mathematical Programming Computation (Journal)

    Letchford, A. (Associate Editor)

    2008 → 2012

    Activity: Publication peer-review and editorial work types › Editorial activity

  41. Mathematical Programming (Journal)

    Letchford, A. (Associate Editor)

    2003 → 2012

    Activity: Publication peer-review and editorial work types › Editorial activity

  42. Mathematical Programming (Journal)

    Letchford, A. (Guest editor)

    2015

    Activity: Publication peer-review and editorial work types › Editorial activity

  43. LUMS Research Conference 2024

    Caceres Gelvez, S. (Speaker), Dang, T. (Contributor) & Letchford, A. (Contributor)

    9/05/2024

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  44. London School of Economics

    Letchford, A. (Examiner)

    06/2010 → 09/2012

    Activity: Business or School/HEI Engagement › Visiting an external academic institution

  45. LANCS Workshop on Modelling and Solving Complex Optimisation Problems

    Letchford, A. (Speaker)

    04/2011

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  46. LANCS International Workshop on Discrete and Nonlinear Optimisation

    Letchford, A. (Speaker)

    05/2013

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  47. Journées de l'Optimisation 2005

    Letchford, A. (Speaker)

    05/2005

    Activity: Participating in or organising an event types › Participation in conference - Academic

  48. Integer Programming Conference in Honor of Egon Balas

    Letchford, A. (Keynote/plenary speaker)

    06/2002

    Activity: Participating in or organising an event types › Participation in conference - Academic

  49. Insertion heuristics for a class of dynamic vehicle routing problems

    Letchford, A. (Speaker)

    30/11/2022

    Activity: Talk or presentation types › Invited talk

  50. Insertion heuristics for a class of dynamic vehicle routing problems

    Letchford, A. (Speaker)

    6/12/2022

    Activity: Talk or presentation types › Invited talk

  51. Improving a constructive heuristic for the general routing problem

    Letchford, A. (Speaker)

    6/09/2022

    Activity: Talk or presentation types › Invited talk

  52. Fifty years of cutting planes

    Letchford, A. (Invited speaker)

    06/2009

    Activity: Talk or presentation types › Invited talk

  53. Exploring the relationship between max-cut and stable set relaxations

    Letchford, A. (Speaker)

    09/2004

    Activity: Talk or presentation types › Invited talk

  54. EURO Journal on Computational Optimization (Journal)

    Letchford, A. (Associate Editor)

    2012 → …

    Activity: Publication peer-review and editorial work types › Editorial activity

  55. Discrete Optimization (Journal)

    Letchford, A. (Associate Editor)

    2009 → 2012

    Activity: Publication peer-review and editorial work types › Editorial activity

  56. Discrete Optimization (Journal)

    Letchford, A. (Guest editor)

    2007

    Activity: Publication peer-review and editorial work types › Editorial activity

  57. Discrete Applied Mathematics (Journal)

    Letchford, A. (Guest editor)

    2008

    Activity: Publication peer-review and editorial work types › Editorial activity

  58. Convex relaxations of the stable set problem

    Letchford, A. (Speaker)

    03/2011

    Activity: Talk or presentation types › Invited talk

  59. Computational Optimization and Applications (Journal)

    Letchford, A. (Associate Editor)

    2005 → 2009

    Activity: Publication peer-review and editorial work types › Editorial activity

  60. Canadian Operational Research Society Annual Conference (CORS)

    Letchford, A. (Keynote/plenary speaker)

    05/2006

    Activity: Participating in or organising an event types › Participation in conference - Academic

  61. Bonn Workshop on Combinatorial Optimisation

    Letchford, A. (Invited speaker)

    11/2008

    Activity: Participating in or organising an event types › Participation in conference - Academic

  62. Bit representations of mixed-integer quadratic programs

    Letchford, A. (Speaker)

    6/12/2016

    Activity: Talk or presentation types › Invited talk

  63. Binary positive semidefinite matrices and some related polytopes

    Letchford, A. (Visitor)

    08/2008

    Activity: Talk or presentation types › Invited talk

  64. Bertinoro Workshop on Combinatorial Optimisation

    Letchford, A. (Speaker)

    05/2004

    Activity: Participating in or organising an event types › Participation in conference - Academic

  65. Associazione Italiana di Ricerca Operativa (External organisation)

    Letchford, A. (Member)

    2001 → 2011

    Activity: Membership types › Member of an organisation

  66. An introduction to second-order cone programming

    Letchford, A. (Speaker)

    09/2010

    Activity: Talk or presentation types › Invited talk

  67. An introduction to conic programming

    Letchford, A. (Speaker)

    08/2007

    Activity: Talk or presentation types › Invited talk

  68. An introduction to approximation algorithms (and inapproximability)

    Letchford, A. (Speaker)

    24/02/2015

    Activity: Talk or presentation types › Invited talk

  69. ALIO/EURO Conference on Combinatorial Optimization

    Letchford, A. (Member of programme committee)

    2008

    Activity: Participating in or organising an event types › Participation in conference - Academic

  70. Algorithms for planar graphs

    Letchford, A. (Speaker)

    12/2005

    Activity: Talk or presentation types › Invited talk

  71. Algorithmic Aspects in Information and Management

    Letchford, A. (Member of programme committee)

    1/01/2010 → 21/07/2010

    Activity: Participating in or organising an event types › Participation in conference - Academic

  72. A tutorial on mixed-integer non-linear programming

    Letchford, A. (Speaker)

    11/2010

    Activity: Talk or presentation types › Invited talk

  73. A new approach to quadratic unconstrained binary optimisation

    Letchford, A. (Speaker)

    1/02/2023

    Activity: Talk or presentation types › Invited talk

  74. 9th Conference in Integer Programming and Combinatorial Optimization (IPCO IX)

    Letchford, A. (Speaker)

    05/2002

    Activity: Participating in or organising an event types › Participation in conference - Academic

  75. 8th Mixed-Integer Programming Workshop (MIP 2011)

    Letchford, A. (Invited speaker)

    06/2011

    Activity: Participating in or organising an event types › Participation in conference - Academic

  76. 8th International Symposium on Combinatorial Optimization

    Letchford, A. (Speaker)

    24/05/2024

    Activity: Participating in or organising an event types › Participation in conference - Academic

  77. 8th International Symposium on Combinatorial Optimization

    Letchford, A. (Member of programme committee)

    1/01/2024 → 24/05/2024

    Activity: Participating in or organising an event types › Participation in conference - Academic

  78. 8th International Symposium on Combinatorial Optimization

    Caceres Gelvez, S. (Speaker), Dang, T. (Contributor) & Letchford, A. (Contributor)

    22/05/2024 → 24/05/2024

    Activity: Participating in or organising an event types › Participation in conference - Academic

  79. 8th Aussois Workshop on Combinatorial Optimisation

    Letchford, A. (Invited speaker)

    01/2004

    Activity: Participating in or organising an event types › Participation in conference - Academic

  80. 7th Conference on Integer Programming and Combinatorial Optimization (IPCO VII)

    Letchford, A. (Speaker)

    06/1999

    Activity: Participating in or organising an event types › Participation in conference - Academic

  81. 6th Aussois Workshop on Combinatorial Optimisation

    Letchford, A. (Invited speaker)

    01/2002

    Activity: Participating in or organising an event types › Participation in conference - Academic

  82. 61st Annual Conference of the Operational Research Society (OR61)

    Letchford, A. (Speaker)

    09/2019

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  83. 60th Annual Conference of the Operational Research Society (OR60)

    Letchford, A. (Speaker)

    09/2018

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  84. 5th Joint IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Speaker)

    30/04/2025

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  85. 5th Joint IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Member of programme committee)

    1/08/2024 → 30/04/2025

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  86. 5th International Symposium on Combinatorial Optimization (ISCO)

    Letchford, A. (Member of programme committee)

    1/01/2018 → 13/04/2018

    Activity: Participating in or organising an event types › Participation in conference - Academic

  87. 5th International Symposium on Combinatorial Optimization (ISCO)

    Letchford, A. (Speaker)

    04/2018

    Activity: Participating in or organising an event types › Participation in conference - Academic

  88. 5th Aussois Workshop on Combinatorial Optimization

    Letchford, A. (Invited speaker)

    03/2001

    Activity: Participating in or organising an event types › Participation in conference - Academic

  89. 51st Annual Conference of the Operational Research Society (OR51)

    Letchford, A. (Organiser)

    2009

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  90. 51st Annual Conference of the Operational Research Society (OR51)

    Letchford, A. (Speaker)

    09/2009

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  91. 4th Workshop on Arc Routing Problems

    Letchford, A. (Participant)

    22/05/2022 → 24/05/2022

    Activity: Participating in or organising an event types › Participation in conference - Academic

  92. 4th Joint IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Member of programme committee)

    1/01/2023 → 28/04/2023

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  93. 4th Joint IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Invited speaker)

    04/2023

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  94. 4th Joint IMA/ORS Conference on the Mathematics of Operational Research

    Caceres Gelvez, S. (Speaker), Dang, T. (Contributor) & Letchford, A. (Contributor)

    26/04/2023 → 28/04/2023

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  95. 4th International Symposium on Combinatorial Optimization (ISCO)

    Letchford, A. (Keynote/plenary speaker)

    18/05/2016

    Activity: Participating in or organising an event types › Participation in conference - Academic

  96. 4th International Network Optimization Conference (INOC 2009)

    Letchford, A. (Member of programme committee)

    1/01/2009 → 29/04/2009

    Activity: Participating in or organising an event types › Participation in conference - Academic

  97. 4th International Network Optimization Conference (INOC 2009)

    Letchford, A. (Invited speaker)

    04/2009

    Activity: Participating in or organising an event types › Participation in conference - Academic

  98. 4th Aussois Workshop on Combinatorial Optimisation

    Letchford, A. (Invited speaker)

    03/2000

    Activity: Participating in or organising an event types › Participation in conference - Academic

  99. 3rd International Network Optimization Conference (INOC 2007)

    Letchford, A. (Keynote/plenary speaker)

    04/2007

    Activity: Participating in or organising an event types › Participation in conference - Academic

  100. 3rd IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Member of programme committee)

    1/01/2021 → 23/04/2021

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

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