NOTE: This course will be held online. You will be provided information on how to attend once you register. 

Target audience: Staff members who need access to their site as a Site Manager or Administrator in the new WMS 

Prerequisites: None

Duration: 2 hours 

Course format: Workshop 

TITLE/TITRE

The unknotting number
 

RÉSUMÉ / ABSTRACT

The unknotting number of a knot is one of the simplest classical knot invariants to define: it simply counts the minimum times a knot must pass through itself in order to become unknotted. Despite this simple definition, the unknotting number is often fiendishly difficult to compute. Beginning from the definition, I will discuss some of what is known about this invariant and highlight some of the many things that we still do not understand.

The Undergraduate Medical Admissions office will be closed to public from February 17 to 20 inclusively for the virtual Multiple Mini-Interviews (MMIs) for University-level applicants. For urgent matters that need to be communicated on the day of the interviews, please indicate URGENT MMI in the subject line of your message to the following email address:

mmi1.med [at] mcgill.ca (candidates scheduled for interview only)

Programme

2025-2026 Semifinalists (in alphabetical order)

• Angélique Brown, mezzo-soprano
• Liam Dooley, baritone
• Elizabeth Fast, soprano
• AJ Gauger, soprano
• Brenden Lengsfeld, countertenor
• Zoe McCormick, soprano
• Christopher Pitre-McBride, baritone

Sir John William Dawson (1820–1899), former principal of McGill University, was a notable geologist, president of Montreal’s Natural History Society, and founder of the Redpath Museum. He was also a lifelong advocate of Protestant Christianity.