Dr. U. Whitcher (U. is for Bear)
@yarntheory.bsky.social
Math, history, science fiction, string theory, games with string.
yarntheory.net
yarntheory.net
Look what's in stock at my local Barnes and Noble!
October 13, 2025 at 10:49 PM
Look what's in stock at my local Barnes and Noble!
Guess the title of the first subsection in this paper!
September 4, 2025 at 6:25 PM
Guess the title of the first subsection in this paper!
I had a phenomenal time at the Hugo awards in all ways except for the water bottle whose contents seeped into my backpack over the course of the ceremony. So, giveaway! Quote with your favorite poem for a chance to win a slightly waterlogged but still readable book that has had adventures.
August 18, 2025 at 4:49 PM
I had a phenomenal time at the Hugo awards in all ways except for the water bottle whose contents seeped into my backpack over the course of the ceremony. So, giveaway! Quote with your favorite poem for a chance to win a slightly waterlogged but still readable book that has had adventures.
At the Hugos with @heatherrosejones.bsky.social !
August 17, 2025 at 3:26 AM
At the Hugos with @heatherrosejones.bsky.social !
The "how many piroshkies can I eat in one con?" challenge is off to a good start.
August 14, 2025 at 5:13 PM
The "how many piroshkies can I eat in one con?" challenge is off to a good start.
Emergency Gennoveus!
July 22, 2025 at 6:46 PM
Emergency Gennoveus!
Danielle Taphanel, who drew the glorious cover art for North Continent Ribbon, is having a rough year. If you've ever admired their work, maybe sponsor some tea for them?
ko-fi.com/treelet
ko-fi.com/treelet
June 25, 2025 at 3:37 PM
Danielle Taphanel, who drew the glorious cover art for North Continent Ribbon, is having a rough year. If you've ever admired their work, maybe sponsor some tea for them?
ko-fi.com/treelet
ko-fi.com/treelet
Hey @thesuiway.bsky.social , we're Amazon bestseller buddies!
June 20, 2025 at 9:09 PM
Hey @thesuiway.bsky.social , we're Amazon bestseller buddies!
Rainbows and library readings.
June 1, 2025 at 1:47 PM
Rainbows and library readings.
I'm reading poetry at the MLK, Jr. library in Washington, DC this Saturday!
May 27, 2025 at 5:52 PM
I'm reading poetry at the MLK, Jr. library in Washington, DC this Saturday!
Ridiculously charmed by the existence of a capybara with a yuzu on its head as a cartoon mascot, I thought it was only a guide to writing alt text.
May 17, 2025 at 12:50 PM
Ridiculously charmed by the existence of a capybara with a yuzu on its head as a cartoon mascot, I thought it was only a guide to writing alt text.
On the way to the AWM Symposium, via train and bus!
May 15, 2025 at 7:57 PM
On the way to the AWM Symposium, via train and bus!
Kosmas thinks I should work from home more often.
May 8, 2025 at 11:17 PM
Kosmas thinks I should work from home more often.
Kosmas appreciates industry.
April 21, 2025 at 11:49 AM
Kosmas appreciates industry.
Doors open in a few minutes!
April 9, 2025 at 10:38 PM
Doors open in a few minutes!
I was at the protest in Detroit this weekend! I came away with a strong wish for a new umbrella.
April 7, 2025 at 1:30 AM
I was at the protest in Detroit this weekend! I came away with a strong wish for a new umbrella.
I want to talk about nonbinary gender in North Continent Ribbon! (1/n)
March 27, 2025 at 3:44 PM
I want to talk about nonbinary gender in North Continent Ribbon! (1/n)
Brought a six-legged salamander to my work's craft show.
March 21, 2025 at 1:24 PM
Brought a six-legged salamander to my work's craft show.
Next in line is complex solutions to
x^5 + y^5 + z^5 + w^5 + 1=0,
plus points at infinity. This is everyone's favorite Calabi-Yau threefold (six-dimensional space), the Fermat quintic!
Again, we can only draw a slice. But we can see the 5s in its symmetries!
(23/23)
x^5 + y^5 + z^5 + w^5 + 1=0,
plus points at infinity. This is everyone's favorite Calabi-Yau threefold (six-dimensional space), the Fermat quintic!
Again, we can only draw a slice. But we can see the 5s in its symmetries!
(23/23)
February 17, 2025 at 7:24 PM
Next in line is complex solutions to
x^5 + y^5 + z^5 + w^5 + 1=0,
plus points at infinity. This is everyone's favorite Calabi-Yau threefold (six-dimensional space), the Fermat quintic!
Again, we can only draw a slice. But we can see the 5s in its symmetries!
(23/23)
x^5 + y^5 + z^5 + w^5 + 1=0,
plus points at infinity. This is everyone's favorite Calabi-Yau threefold (six-dimensional space), the Fermat quintic!
Again, we can only draw a slice. But we can see the 5s in its symmetries!
(23/23)
Filling in the points at infinity would get us a Calabi-Yau twofold (for historical reasons these are called K3 surfaces). Here's a visualization of a slice:
(22/n)
(22/n)
February 17, 2025 at 7:19 PM
Filling in the points at infinity would get us a Calabi-Yau twofold (for historical reasons these are called K3 surfaces). Here's a visualization of a slice:
(22/n)
(22/n)
Stoked to be LGTBQ+ sci-fi bestseller buddies with @caitlinstarling.com again this afternoon!
February 15, 2025 at 6:12 PM
Stoked to be LGTBQ+ sci-fi bestseller buddies with @caitlinstarling.com again this afternoon!
My poem "Hexavalent" was in the January/February 2024 Analog!
February 12, 2025 at 2:25 AM
My poem "Hexavalent" was in the January/February 2024 Analog!
Me: searches for a specific mathematician by name.
DuckDuckGo: do you need help adding fractions?
Google: is this a quest?
DuckDuckGo: do you need help adding fractions?
Google: is this a quest?
February 8, 2025 at 3:38 PM
Me: searches for a specific mathematician by name.
DuckDuckGo: do you need help adding fractions?
Google: is this a quest?
DuckDuckGo: do you need help adding fractions?
Google: is this a quest?
Kosmas shares your concern.
February 5, 2025 at 1:35 AM
Kosmas shares your concern.
Sometimes you just have to bring your medieval knife and your radish to your hotel room.
January 25, 2025 at 4:45 PM
Sometimes you just have to bring your medieval knife and your radish to your hotel room.