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Professor Adam Letchford

Professor

  1. Editorial activity
  2. Computational Optimization and Applications (Journal)

    Letchford, A. (Associate Editor)

    20052009

    Activity: Publication peer-review and editorial work typesEditorial activity

  3. Discrete Applied Mathematics (Journal)

    Letchford, A. (Guest editor)

    2008

    Activity: Publication peer-review and editorial work typesEditorial activity

  4. Discrete Optimization (Journal)

    Letchford, A. (Associate Editor)

    20092012

    Activity: Publication peer-review and editorial work typesEditorial activity

  5. Discrete Optimization (Journal)

    Letchford, A. (Guest editor)

    2007

    Activity: Publication peer-review and editorial work typesEditorial activity

  6. EURO Journal on Computational Optimization (Journal)

    Letchford, A. (Associate Editor)

    2012 → …

    Activity: Publication peer-review and editorial work typesEditorial activity

  7. Mathematical Programming (Journal)

    Letchford, A. (Associate Editor)

    20032012

    Activity: Publication peer-review and editorial work typesEditorial activity

  8. Mathematical Programming (Journal)

    Letchford, A. (Guest editor)

    2015

    Activity: Publication peer-review and editorial work typesEditorial activity

  9. Mathematical Programming Computation (Journal)

    Letchford, A. (Associate Editor)

    20082012

    Activity: Publication peer-review and editorial work typesEditorial activity

  10. Operations Research (Journal)

    Letchford, A. (Associate Editor)

    20122018

    Activity: Publication peer-review and editorial work typesEditorial activity

  11. Participation in conference -Mixed Audience
  12. 1st Joint IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Invited speaker)

    20/04/2017

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  13. 1st LANCS Workshop on Discrete and Nonlinear Optimisation

    Letchford, A. (Speaker)

    02/2009

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  14. 2022 STOR-i Workshop on Prediction and Optimisation

    Letchford, A. (Member of programme committee)

    1/01/202217/06/2022

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  15. 2nd Joint IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Invited speaker)

    25/04/2019

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  16. 2nd LANCS Workshop in Heuristic Understanding

    Letchford, A. (Speaker)

    01/2010

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  17. 2nd LANCS Workshop on Discrete and Nonlinear Optimisation

    Letchford, A. (Speaker)

    03/2010

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  18. 34th European Conference on Operational Research

    Letchford, A. (Speaker)

    23/06/2025

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  19. 37th Annual Conference of the Operational Research Society (OR37)

    Letchford, A. (Speaker)

    09/1995

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  20. 3rd IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Member of programme committee)

    1/01/202123/04/2021

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  21. 4th Joint IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Member of programme committee)

    1/01/202328/04/2023

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  22. 4th Joint IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Invited speaker)

    04/2023

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  23. 4th Joint IMA/ORS Conference on the Mathematics of Operational Research

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

    26/04/202328/04/2023

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  24. 51st Annual Conference of the Operational Research Society (OR51)

    Letchford, A. (Organiser)

    2009

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  25. 51st Annual Conference of the Operational Research Society (OR51)

    Letchford, A. (Speaker)

    09/2009

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  26. 5th Joint IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Speaker)

    30/04/2025

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  27. 5th Joint IMA/ORS Conference on the Mathematics of Operational Research

    Letchford, A. (Member of programme committee)

    1/08/202430/04/2025

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  28. 60th Annual Conference of the Operational Research Society (OR60)

    Letchford, A. (Speaker)

    09/2018

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  29. 61st Annual Conference of the Operational Research Society (OR61)

    Letchford, A. (Speaker)

    09/2019

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  30. LANCS International Workshop on Discrete and Nonlinear Optimisation

    Letchford, A. (Speaker)

    05/2013

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  31. LANCS Workshop on Modelling and Solving Complex Optimisation Problems

    Letchford, A. (Speaker)

    04/2011

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  32. LUMS Research Conference 2024

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

    9/05/2024

    Activity: Participating in or organising an event typesParticipation in conference -Mixed Audience

  33. Invited talk
  34. A new approach to quadratic unconstrained binary optimisation

    Letchford, A. (Speaker)

    1/02/2023

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    11/2010

    Activity: Talk or presentation typesInvited talk

  36. Algorithms for planar graphs

    Letchford, A. (Speaker)

    12/2005

    Activity: Talk or presentation typesInvited talk

  37. An introduction to approximation algorithms (and inapproximability)

    Letchford, A. (Speaker)

    24/02/2015

    Activity: Talk or presentation typesInvited talk

  38. An introduction to conic programming

    Letchford, A. (Speaker)

    08/2007

    Activity: Talk or presentation typesInvited talk

  39. An introduction to second-order cone programming

    Letchford, A. (Speaker)

    09/2010

    Activity: Talk or presentation typesInvited talk

  40. Binary positive semidefinite matrices and some related polytopes

    Letchford, A. (Visitor)

    08/2008

    Activity: Talk or presentation typesInvited talk

  41. Bit representations of mixed-integer quadratic programs

    Letchford, A. (Speaker)

    6/12/2016

    Activity: Talk or presentation typesInvited talk

  42. Convex relaxations of the stable set problem

    Letchford, A. (Speaker)

    03/2011

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    09/2004

    Activity: Talk or presentation typesInvited talk

  44. Fifty years of cutting planes

    Letchford, A. (Invited speaker)

    06/2009

    Activity: Talk or presentation typesInvited talk

  45. Improving a constructive heuristic for the general routing problem

    Letchford, A. (Speaker)

    6/09/2022

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    30/11/2022

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    6/12/2022

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    10/2010

    Activity: Talk or presentation typesInvited talk

  49. On non-convex quadratic programming with box constraints

    Letchford, A. (Speaker)

    04/2009

    Activity: Talk or presentation typesInvited talk

  50. On traveling salesman games

    Letchford, A. (Speaker)

    01/2003

    Activity: Talk or presentation typesInvited talk

  51. Optimisation over cones

    Letchford, A. (Speaker)

    04/2010

    Activity: Talk or presentation typesInvited talk

  52. Planar graphs and the traveling salesman problem

    Letchford, A. (Speaker)

    03/2005

    Activity: Talk or presentation typesInvited talk

  53. Primal separation algorithms

    Letchford, A. (Speaker)

    04/2001

    Activity: Talk or presentation typesInvited talk

  54. Progress on the uncapacitated facility location problem

    Letchford, A. (Speaker)

    4/09/2024

    Activity: Talk or presentation typesInvited talk

  55. Recent progress on knapsack-based cutting planes

    Letchford, A. (Speaker)

    01/2009

    Activity: Talk or presentation typesInvited talk

  56. Reformulating mixed-integer quadratically-constrained quadratic programmes

    Letchford, A. (Speaker)

    03/2011

    Activity: Talk or presentation typesInvited talk

  57. Reformulation of 0-1 quadratically constrained quadratic programs

    Letchford, A. (Speaker)

    10/2010

    Activity: Talk or presentation typesInvited talk

  58. Second order cone programming and its applications

    Letchford, A. (Speaker)

    02/2012

    Activity: Talk or presentation typesInvited talk

  59. Semidefinite programming and combinatorial optimization

    Letchford, A. (Speaker)

    11/2006

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    03/2003

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    01/2005

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    03/2004

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    09/2003

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    12/04/2013

    Activity: Talk or presentation typesInvited talk

  65. Strengthening the reformulation-linearisation technique with cutting planes

    Letchford, A. (Speaker)

    04/2013

    Activity: Talk or presentation typesInvited talk

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

    Letchford, A. (Speaker)

    21/05/2014

    Activity: Talk or presentation typesInvited talk

  67. Stronger upper bounds for the maximum stable set problem

    Letchford, A. (Speaker)

    02/2007

    Activity: Talk or presentation typesInvited talk

  68. The polyhedral approach to the TSP

    Letchford, A. (Invited speaker)

    22/09/1999

    Activity: Talk or presentation typesInvited talk

  69. The traveling salesman problem: inequalities and separation

    Letchford, A. (Speaker)

    07/2004

    Activity: Talk or presentation typesInvited talk

  70. The traveling salesman problem: inequalities and separation

    Letchford, A. (Speaker)

    04/2004

    Activity: Talk or presentation typesInvited talk

  71. The traveling salesman problem: inequalities and separation

    Letchford, A. (Speaker)

    09/2003

    Activity: Talk or presentation typesInvited talk

  72. The traveling salesman problem: inequalities and separation

    Letchford, A. (Speaker)

    12/2003

    Activity: Talk or presentation typesInvited talk

  73. The Travelling Salesman Problem

    Letchford, A. (Speaker)

    04/2010

    Activity: Talk or presentation typesInvited talk

  74. Vehicle routing games

    Letchford, A. (Speaker)

    03/2005

    Activity: Talk or presentation typesInvited talk

  75. Vehicle routing games

    Letchford, A. (Speaker)

    01/2005

    Activity: Talk or presentation typesInvited talk

  76. Visiting an external academic institution
  77. London School of Economics

    Letchford, A. (Examiner)

    06/201009/2012

    Activity: Business or School/HEI EngagementVisiting an external academic institution

  78. University of L'Aquila

    Letchford, A. (Visiting researcher)

    28/11/20222/12/2022

    Activity: Business or School/HEI EngagementVisiting an external academic institution

  79. University of Pisa

    Letchford, A. (Visiting researcher)

    03/2019

    Activity: Business or School/HEI EngagementVisiting an external academic institution

  80. Member of an organisation
  81. Associazione Italiana di Ricerca Operativa (External organisation)

    Letchford, A. (Member)

    20012011

    Activity: Membership typesMember of an organisation

  82. The Operational Research Society (External organisation)

    Letchford, A. (Member)

    2000 → …

    Activity: Membership typesMember of an organisation

  83. Participation in conference - Academic
  84. 10th Combinatorial Optimisation Conference (CO96)

    Letchford, A. (Speaker)

    03/1996

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  85. 10th International Conference on Applied Mathematical Optimization and Modelling (APMOD 2012)

    Letchford, A. (Member of programme committee)

    1/01/201230/03/2012

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  86. 10th International Conference on Applied Mathematical Optimization and Modelling (APMOD 2012)

    Letchford, A. (Speaker)

    03/2012

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  87. 11th Combinatorial Optimisation Conference (CO98)

    Letchford, A. (Speaker)

    04/1998

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  88. 11th Conference on Integer Programming and Combinatorial Optimization (IPCO XI)

    Letchford, A. (Member of programme committee)

    2005

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  89. 12th Aussois Workshop on Combinatorial Optimisation

    Letchford, A. (Invited speaker)

    01/2008

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  90. 12th Combinatorial Optimisation Conference (CO2000)

    Letchford, A. (Speaker)

    07/2000

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  91. 13th Combinatorial Optimisation Conference (CO2004)

    Letchford, A. (Member of programme committee)

    2004

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  92. 13th Combinatorial Optimisation Conference (CO2004)

    Letchford, A. (Speaker)

    03/2004

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  93. 13th Conference on Integer Programming and Combinatorial Optimization (IPCO XIII)

    Letchford, A. (Speaker)

    05/2008

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  94. 14th Conference on Integer Programming and Combinatorial Optimization (IPCO XIV)

    Letchford, A. (Speaker)

    06/2010

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  95. 15th Annual Conference of the Italian Operational Research Society (AIRO)

    Letchford, A. (Speaker)

    09/2001

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  96. 15th Combinatorial Optimisation Conference (CO2008)

    Letchford, A. (Keynote/plenary speaker)

    03/2008

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  97. 16th Conference of the International Federation of Operational Research Societies (IFORS)

    Letchford, A. (Speaker)

    07/2002

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  98. 17th British-French-German Optimisation Conference (BFG 2015)

    Letchford, A. (Invited speaker)

    06/2015

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  99. 17th International Symposium on Mathematical Programming (ISMP)

    Letchford, A. (Speaker)

    08/2000

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  100. 18th Combinatorial Optimisation Conference (CO2012)

    Letchford, A. (Member of programme committee)

    1/01/201219/09/2012

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  101. 18th International Symposium on Mathematical Programming (ISMP 2003)

    Letchford, A. (Speaker)

    08/2003

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  102. 1st Student Conference on Operational Research

    Letchford, A. (Keynote/plenary speaker)

    03/2009

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  103. 2010 Joint ECCO-CO Conference

    Letchford, A. (Member of programme committee)

    1/01/201029/05/2010

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  104. 2010 Joint ECCO-CO Conference

    Letchford, A. (Speaker)

    05/2010

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  105. 2022 International Conference on Optimization and Decision Science (ODS 2022)

    Letchford, A. (Speaker)

    08/2022

    Activity: Participating in or organising an event typesParticipation in conference - Academic

  106. 20th Combinatorial Optimisation Conference (CO2016)

    Letchford, A. (Member of programme committee)

    1/01/20163/09/2016

    Activity: Participating in or organising an event typesParticipation in conference - Academic

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