Jackson Morris
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jacksonmorris.bsky.social
Jackson Morris
@jacksonmorris.bsky.social
75 followers 40 following 170 posts
Homotopy theorist and friend

https://sites.google.com/view/jacksonmorris/
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jacksonmorris.bsky.social
Both of them!
Two cats sharing a chair. Incredible
November 25, 2025 at 8:40 PM
jacksonmorris.bsky.social
I need to up my spectral sequence game! These charts are awesome
E1 page of a spectral sequence with entries depicted as planar loops
November 21, 2025 at 3:41 PM
jacksonmorris.bsky.social
Just unbelievable
Cat in a silly adorable position on blanket
November 20, 2025 at 6:29 PM
jacksonmorris.bsky.social
I can do anything if I got my buddy
My cat Henry sitting in my lap, being petted on his head. He looks like 🐈 in color
October 9, 2025 at 3:16 PM
jacksonmorris.bsky.social
Wonderful trip to Colorado!! Beautiful mountains and fun math.
View of the continental divide (I think) at sunset Some cool Red Rock formation I saw on a run Cool finite cell complexes… wonder that this will become??
October 2, 2025 at 5:56 PM
jacksonmorris.bsky.social
Insane amount of good music recently
Geese new album cover Joanne Robertson new album cover Wednesday new album cover
September 26, 2025 at 4:54 PM
jacksonmorris.bsky.social
Today’s task: look at this picture.
Adams charts for the E2-page for the cofiber of the third Hopf map.
September 24, 2025 at 8:40 PM
jacksonmorris.bsky.social
Even better: Spec of the sphere spectrum!!
September 19, 2025 at 4:48 PM
jacksonmorris.bsky.social
Normalizing \infty cats
“We use the word ‘category’ to mean category.”, with a footnote on next image Footnote: “or more precisely, (\infty, 1)-category”
September 19, 2025 at 4:44 PM
jacksonmorris.bsky.social
Finally saw the infamous plaque
Plaque for best mathematics dissertation award at University of Michigan. 1967 recipient: Ted Kaczynski
September 11, 2025 at 12:47 PM
jacksonmorris.bsky.social
Found out Notre Dame has a two board system for their seminars. Now I get to pull a surprise board in the middle of the talk!
Chalkboard with complicated charts depicting a trigraded Ext group separated into coweights
September 9, 2025 at 6:03 PM
jacksonmorris.bsky.social
Haven’t played NYT games in a while but this new one is so fun!!
September 3, 2025 at 5:02 PM
jacksonmorris.bsky.social
Many bodies of water entered these last two weekends
Girlfriend standing on beach in Astoria, OR. Grey sky, low tide Crater lake, OR. Slight smoke haze. Girlfriend standing on beach overlooking g Salish Sea on Shaw Island, WA. Seaweed on shore, sailboats moored.
September 2, 2025 at 3:55 PM
jacksonmorris.bsky.social
cool new picture that definitely didn't take me over an hour to make
the E2 page for a spectral sequence. There is an 8-periodic pattern proceeding diagonally up to the right, which is replicated in many different colors.
August 20, 2025 at 4:18 PM
jacksonmorris.bsky.social
I LOVE THE SOUTH/MIDWEST!!!
Picture of me and my girlfriend at the top of Sleeping Bear Dunes. Lake Michigan in background. Arch rock on Mackinac island. Picture of my girlfriend in flower field, wind turbines in background, on the way up to the thumb of Michigan. My brother and girlfriend and I posing with mascots at Holiday World in Santa Clause, Indiana.
August 2, 2025 at 4:47 PM
jacksonmorris.bsky.social
Grilling for a crowd
Starter chimney in charcoal grill with flame roaring 3 raccoons watching me from across the front yard
July 16, 2025 at 2:29 AM
jacksonmorris.bsky.social
Taught the Europeans a thing or two about grilling this Fourth of July at European Talbot (no patriotism, just grilling)
Me and a fellow UW grad student grilling outside a conference center near Kolding, Denmark. Line of Europeans waiting for various grilled items.
July 7, 2025 at 12:51 PM
jacksonmorris.bsky.social
Beautiful hike with other UW math grad students yesterday :-)
Group of uw math grad students at the top of rattlesnake ridge, a popular hike near Seattle. Low mountains covered in green trees in the background. Overcast sky. Lake at rattlesnake at night. View of mt. Si from top of hike. Cloudy. Other view from hike. Lake visible below.
June 12, 2025 at 8:33 PM
jacksonmorris.bsky.social
Draft of paper is done. Time to grill
May 30, 2025 at 11:54 PM
jacksonmorris.bsky.social
Music for Hot Tub boats open.spotify.com/track/2waAug...
Picture of me and friends in a hot tub boat on lake union
May 19, 2025 at 4:06 PM
jacksonmorris.bsky.social
Dunno why my cat always looks like he’s having terrible Vietnam flashbacks
Girlfriend and cat sitting together in our kitchen
May 15, 2025 at 1:32 AM
jacksonmorris.bsky.social
It’s the little things 🥹
Email from a student. Transcription: “Hey Jackson, Just wanted to say I really enjoyed your lecture in 208 A today. I left with a much stronger understanding of the day's concepts than I typically do. You were very approachable while also appealing knowledgeable, and I wouldn't have been nervous that my questions were too basic/obvious. It's hard to balance knowing and teaching with approachability and down-to-earth-ness, but I think you did it well. That's all, have a good rest of your week!”
May 8, 2025 at 8:26 PM
jacksonmorris.bsky.social
Presented a poster this weekend at WAGS and had a lot of fun :)
Me, standing by my poster at a conference. Others standing nearby, listening as I explain
April 28, 2025 at 4:12 PM
jacksonmorris.bsky.social
Made some cute graphics for a poster! See me at WAGS this weekend (and let me know how a homotopy theorist snuck in to an algebraic geometry conference)
A middle column from a poster, with math text and some diagrams. In more detail, there are two sections on this poster. The first section outlines my main result, a computation of the ring of cooperations for a particular motivic spectrum by an Adams spectral sequence. The second section goes into a key step in my argument, an algebraic Atiyah-Hirzebruch spectral sequence. Roughly, the homology of my input to this Adams spectral sequence decomposed into a family of well-behaved modules. The first of these modules is, algebraically, a 3 cell complex, and a complicated Atiyah-Hirzebruch spectral sequence can be employed to compute its Ext group. The graphic below shows the cell complex, a heuristic for this aAHSS, and the charts which are attached to each cell in the algebraic cell complex. Woof!
April 24, 2025 at 1:05 AM
jacksonmorris.bsky.social
Good morning! open.spotify.com/track/3yxJaR...
Photo taken from the montlake bridge, which goes over the connection between lake Washington and lake union, on my walk to school. Beautiful blue sky, no clouds, mountains barely visible at the tree line.
April 17, 2025 at 3:56 PM