Justin Lanier
@jlanier.bsky.social
Independent of thinking about AI, Terry Tao himself has an interesting and encouraging perspective regarding that first question:
July 19, 2025 at 12:49 AM
Independent of thinking about AI, Terry Tao himself has an interesting and encouraging perspective regarding that first question:
June 27, 2025 at 5:24 AM
TIL that we narrowly missing lugging around not only the monikers "imaginary", "negative", "complex", and "irrational" for numbers, but also "fictitious limits". Real glad for that. 😅
from MacTutor's "The real numbers: Stevin to Hilbert"
from MacTutor's "The real numbers: Stevin to Hilbert"
June 27, 2025 at 4:33 AM
TIL that we narrowly missing lugging around not only the monikers "imaginary", "negative", "complex", and "irrational" for numbers, but also "fictitious limits". Real glad for that. 😅
from MacTutor's "The real numbers: Stevin to Hilbert"
from MacTutor's "The real numbers: Stevin to Hilbert"
There are lots of chances for teachers to work on problems collaboratively, encounter new math ideas, and grow as teachers and mathematicians in community. We also have a great lineup of guest mathematicians who will visit us and share about their work.
June 23, 2025 at 2:03 PM
There are lots of chances for teachers to work on problems collaboratively, encounter new math ideas, and grow as teachers and mathematicians in community. We also have a great lineup of guest mathematicians who will visit us and share about their work.
We are two weeks out from the start of "21st century mathematics", a program I run for K-12 math teachers. (Register now!) The program helps teachers connect the math they teach with some math that has been discovered in the 21st century. The program is flexible, free, & online.
June 23, 2025 at 2:00 PM
We are two weeks out from the start of "21st century mathematics", a program I run for K-12 math teachers. (Register now!) The program helps teachers connect the math they teach with some math that has been discovered in the 21st century. The program is flexible, free, & online.
I didn't know The Matrix was filmed in Sydney! But I saw this marker on Google Maps when I was investigating your "Where's Nalini?" prompt.
June 20, 2025 at 2:35 AM
I didn't know The Matrix was filmed in Sydney! But I saw this marker on Google Maps when I was investigating your "Where's Nalini?" prompt.
May 6, 2025 at 2:53 PM
No voting in Australian elections for me, but I still showed up for the democracy sausage. And bake sale!
May 3, 2025 at 3:58 AM
No voting in Australian elections for me, but I still showed up for the democracy sausage. And bake sale!
Big day here in Australia.
May 3, 2025 at 2:23 AM
Big day here in Australia.
Ten squares. The first example has perimeter 14. The second one has perimeter 22. Can anyone find ones with smaller or bigger perimeters? Or other examples that match these?
Intrigued? Check out "21st century mathematics", an enrichment program for teachers: justinlanier.org/21st-century...
Intrigued? Check out "21st century mathematics", an enrichment program for teachers: justinlanier.org/21st-century...
April 28, 2025 at 11:27 AM
Ten squares. The first example has perimeter 14. The second one has perimeter 22. Can anyone find ones with smaller or bigger perimeters? Or other examples that match these?
Intrigued? Check out "21st century mathematics", an enrichment program for teachers: justinlanier.org/21st-century...
Intrigued? Check out "21st century mathematics", an enrichment program for teachers: justinlanier.org/21st-century...
The program webpage has all the details (and the full video with captions): bit.ly/21math2025
Video part 2:
Video part 2:
April 23, 2025 at 1:13 PM
The program webpage has all the details (and the full video with captions): bit.ly/21math2025
Video part 2:
Video part 2:
“21st century mathematics”: a free month-long online enrichment program for math teachers.
Info + register: bit.ly/21math2025
Video part 1:
Info + register: bit.ly/21math2025
Video part 1:
April 23, 2025 at 1:10 PM
“21st century mathematics”: a free month-long online enrichment program for math teachers.
Info + register: bit.ly/21math2025
Video part 1:
Info + register: bit.ly/21math2025
Video part 1:
Find the derivative of g(x) = x^(1 / ln x) in two different ways.
March 8, 2025 at 1:10 AM
Find the derivative of g(x) = x^(1 / ln x) in two different ways.
As a happy coincidence, I ran across a kindred sentiment while reading Felix Klein's “Erlanger Antrittsrede” (1872) today:
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
January 10, 2025 at 9:42 AM
As a happy coincidence, I ran across a kindred sentiment while reading Felix Klein's “Erlanger Antrittsrede” (1872) today:
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
"If there are at least 7 people in a room, can they always break up into groups of 3 or 4? Explain why they can, or give an example of a number of people where this is not possible."
January 9, 2025 at 11:58 PM
"If there are at least 7 people in a room, can they always break up into groups of 3 or 4? Explain why they can, or give an example of a number of people where this is not possible."