Mark Mac Lean

Mathematician. Full of contradictions. Opinions are entirely my own. Retweets =/= endorsements. Likes are often bookmarks or acknowledgements. He/him/his.

[Mark Mac Lean @marktmaclean]

Congratulations! Well-deserved.

[Anthony Bonato @Anthony_Bonato]

Hurray, my book Dots and Lines is a Foreword INDIE award winner!
https://t.co/rn8DaOVabM

[Benoit-Antoine Bacon @ubcprez]

Graduation ceremonies for the Class of 2026 begins today at UBC Okanagan! All our congratulations to each and every one of the 2,638 #UBCO graduates as well as families and friends! It is an honour to celebrate this important milestone with you!

[UBC Geography (also at @ubcgeography.bsky.social) @UBCGeog]

Dr. David Ley, Professor Emeritus of Geography, one of this year’s recipients of the UBC Emeritus College Award for Excellence in Innovative and Creative Endeavours.

Q&A with Dr. Ley:
https://t.co/yHbZHbAXvn

2026 Emeritus College award recipients:
https://t.co/3Bm0TSFrRV

[Mark Mac Lean @marktmaclean]

Mathematicians sign declaration to rein in AI use by Leila Sloman, Scientific American, 2 June 2026.

https://t.co/pweusFwc79

[Anthony Bonato @Anthony_Bonato]

The golden age of mathematics dawned long ago and mathematicians are not freaking out

[The Hill Times @TheHillTimes]

That's @deAdder's take: #cdnpoli

https://t.co/HuYeeyQEMw

[Steven Strogatz @stevenstrogatz]

This terrific article by @sioroberts will help elevate the public discussion of AI in mathematics. The interview about the Leiden Declaration is especially helpful. https://t.co/u4SYxQVXZ2

[Marc Lévesque @MarcLevesqueEco]

Since so many people are screaming "recession" based on a statistically insignificant 0.036% quarterly drop in real GDP, here is a description of the NBER methodology for dating U.S. recessions, which is similar to what C.D. Howe used for Canada.
https://t.co/qlbRE26Wzt

[Mark Mac Lean @marktmaclean]

Findlay won 51% of the points, but only 43.0% of the votes. Elliott won 42.8% of the votes. (The missing 14.2% abstained.)

[BIV News @BIVnews]

Rob Shaw: Kerry-Lynne Findlay inherits a BC Conservative party split in two https://t.co/Tw39YNCT14

[Mark Mac Lean @marktmaclean]

In terms of Black and Milobar:

Black had primarily a Metro Vancouver/suburban breadth.

Milobar had primarily an Interior regional concentration, particularly around Kamloops, which is not surprising given his origins.

[Mark Mac Lean @marktmaclean]

The BC Conservatives use a points system for selecting their leader: 100 points per electoral district (if <100 members, then # points = # members. Here is the leadership vote distribution in the final round and the distribution of voter effectiveness (points per valid vote).

[Mark Mac Lean @marktmaclean]

There were about 1000 more voters Outside Metro Vancouver.

The voter district distribution for this leadership vote likely reflects things like the depth of the party's local organizations, candidate networks, etc.

[Mark Mac Lean @marktmaclean]

@pauljlange These points systems are intended to make electoral districts the fundamental voting unit. Like provincial or federal ridings, however, these electoral districts can have wide variation in the number of voters in them. This is how rural voters, e.g., can be over-represented.

[Mark Mac Lean @marktmaclean]

These percentages are of the available points. There are 100 points for each electoral district (unless they have fewer than 100 members, in which case points available = # of members).

It is possible to win the leadership with less than half the total members supporting you.

[Rob Shaw @RobShaw_BC]

NEW - @KerryLynneFindl is the new leader of the @Conservative_BC with 51% compared to 49% for @NVanCaroline

[Steven Strogatz @stevenstrogatz]

If you like thinking about what math can do for biology and vice versa, you might like this public talk I gave a year ago. It contains a lot of stories from my own life. "From Math to Bio and Back: Reflections on a Two Way Street" https://t.co/TzKE3jnK29

[University of Toronto @UofT]

Geoffrey Hinton, University Professor Emeritus and winner of a Nobel Prize in Physics, granted an honorary degree by Harvard University #UofT
https://t.co/6ktD0iuJfv

[Marc Lévesque @MarcLevesqueEco]

Reading commentary on this morning’s GDP data. Please, please, I beg you, stop saying that imports reduced GDP growth. Imports don’t reduce GDP. There’s a difference between an accounting convention (subtracting imports to get GDP) and a causal economic relationship.