Tootfinder

Computational complexity of the homology problem with orientable filtration: MA-completeness
Ryu Hayakawa, Casper Gyurik, Mahtab Yaghubi Rad, Vedran Dunjko
https://arxiv.org/abs/2510.07014

Computational complexity of the homology problem with orientable filtration: MA-completeness
We show the existence of an MA-complete homology problem for a certain subclass of simplicial complexes. The problem is defined through a new concept of orientability of simplicial complexes that we call a "uniform orientable filtration", which is related to sign-problem freeness in homology. The containment in MA is achieved through the design of new, higher-order random walks on simplicial complexes associated with the filtration. For the MA-hardness, we design a new gadget with which we can …

Day 16: Mayra Cuevas & Marie Marquardt
Okay so this is cheating, but they're co-authors of multiple books together, and there's no way for me to separate their contributions... I've already got too many authors I'd like to list, so why not?
I read their book "Does My Body Offend You?" and absolutely loved it; it's a celebration of teen activism while also being a deep exploration of feminist issues through practical situations that bring out the complicated side of things, which the authors refuse to reduce back to a simple formulaic answer. It has a supporting cast of appropriately-complex male characters that help in exploring the nuances of issues like the line between female empowerment & male gratification, and it brings race and macho culture into the conversion as well.
CW for sexual harassment & deep discussion of the resultant trauma.
I'll cheat again here to sneak in mention of two male authors whose work resonates with theirs: Mark Oshiro's "Anger is a Gift" has a more pessimistic/complex take on teen activism along with a gay romance (CW for racist cop murder), while Jeremy Whitley's graphic novel "Navigating With You" deals with queer romance & disability, while having a main character pairing that echoes those from "Does My Body Offend You?" in a lot of ways. Another connection (to non-men authors this time) is with "Go With the Flow" by Lily Williams and Karen Schneemann. Their graphic novel about teen activism and periods is a bit more didactic and has a much lighter tone, but it does necessarily have some overlapping themes.
To bring it back to Cuevas & Marquhardt, their writing is great and their ability to discuss such complex topics with such nuance, all wrapped up in a story that feels completely natural, is amazing to me, and makes their book feel like one of the most valuable to recommend to others.
In writing this I've realized a grave oversight in the list so far that I'll have to correct tomorrow, but I'm quickly running out of days. The didn't-quite-make-it list is going to be full of more excellent authors, and I'm honestly starting to wonder whether it might actually be harder to name 20 male authors I respect now that I've found the sense to be mostly somewhere between disgusted and disappointed with so many of the male authors I enjoyed as a teen.
#20AuthorsNoMen (cheating a bit)

"Plant sex life is more complicated than you probably imagine"
#Plants #Nature
https://

Plant sex life is more complicated than you probably imagine
The amazing variety of plant reproductive systems.

Tired: Seeing a logo redesign and immediately going to social media to complain about it
Wired: Seeing a logo redesign and immediately going to social media to complain about the people you assume must be complaining about it

from my link log —
The IMP programming language and compiler.
https://www.ancientgeek.org.uk/EMAS/EMAS_Papers/The_IMP_language_and_compiler.pdf
saved 2025-12-07

just in case anyone is interested in how to do complex linear algebra, including complex tensor products, without using complex numbers - using real linear operators \(J\) with \(J\circ J=-I\) instead of complex scalars - here are some links.  
The TLDR version on a poster:
http://mwaa.math.indianapolis.iu.ed…

I didn't realize how many lucky coincidences lead to our robust electoral system - great yarn, should be required reading by those who don't study civics.
https://www.abc.net.au/news/2025-11-09/civic-duty-compulsory-preferen…

Australia's democratic system is unlike any other on Earth
Behind the quirks of Australia's incredible democratic system are a series of complex human backstories.

Rashid Shaheed found a way to compliment Jaxon Smith-Njigba in Seahawks' 37-9 win https://www.espn.com/nfl/story/_/id/47241766/seattle-seahawks-win-atlanta-falcons-rashid-shaheed-compliment-jaxon-smith-njigba…

Khashoggi widow files complaint in France alleging Saudi government infected devices with spyware https://therecord.media/khashoggi-widow-legal-complaint-filed-alleging-saudi-government-spyware

IBM agrees to acquire data streaming software maker Confluent for ~$11B in cash, above its ~$8B market value as of its December 5 close, paying $31 per share (Lauren Thomas/Wall Street Journal)
https://www.wsj.com/business/deals/ibm-nears…