Welcoem to posts!!
in the future - u will be able to do some more stuff here,,,!! like pat catgirl- i mean um yeah... for now u can only see others's posts :c
I just started an account at BlueSky:
bsky.app/profile/chrisstaecker.bsky.social
Follow for the best antiviral social media content around!
Here’s a hint from my first fascinating post:
27 - 5
My sundial short got 3 million views! Thanks to anyone who shared it. There will be retorts.
37 - 8
For folks following along with the math: we just submitted the followup to our paper "Digital topological groups", this one written with Wayne Johnson and Dae-Woong Lee.
arxiv.org/abs/2408.10087
We look at H-spaces, which is a generalization of topological groups assuming no associativity or inverses, and slightly weakening the identity element.
As in the previous paper, there are two categories: NP1 and NP2. We can fully classify all NP2 H-spaces, showing all connected ones are trivial. For NP1 we don't have a classification, and we still don't have any examples which aren't equivalent to groups!
(Wayne joined the project after seeing my other video and getting some novel ideas!)
19 - 1
Highlights from the flea market today:
- Very cool working Blickensderfer typewriter
- Very clean bakelite (?) Corona typewriter
- Big NCR cash register, $300 and jammed!
- 6-box of gluf balls
My personal purchases:
- working Mile-O-Graph with ORIGINAL box
- Schiotz Tonometer with ORIGINAL box and ORIGINAL certificate of accuracy
- kid's slide rule with letters glued on for Caesar cipher
- Nice wooden sector
- 2TB time capsule with ORIGINAL box & manuals
Total cost: $21, plus $3 to get in to the flea market.
72 - 16
A math prop in the first shot! An orange Sears Adding Machine. I don’t have one, but it comes from an era of trashy plastic plugin machines that haven’t aged well.
17 - 0
I finally saw a real one in person! At the NYC Museum of Natural History. A great surprise- I didn't know they had one! They describe it as "Carved stone block of unknown purpose" which sounds pretty good to me! Also had 2 real quipus, with a guide for reading it.
https://youtu.be/93QoXmIEsvw
89 - 9
Spotted at Goodwill in Bridgeport CT today. Dirty but works perfectly. I didn’t buy it, so come get it! Price is very good as far as I can tell.
44 - 10
G4G posted my talk from April- good crowd!
18 - 1
Thanks so much for the anonymous donation I received today! The transparent one is super-hard to find, so I'm glad to have one. With the ORIGINAL stylus and instructions! Sorry I can't thank you personally-
63 - 8
Killer gift idea for a friend who knows what's good: an Add O Bank from a city they love. Always tons available on ebay.
27 - 2
Videos about antique computing devices. Also my teaching and research. I am a professor of mathematics at Fairfield University.
Chris Staecker webarea: faculty.fairfield.edu/cstaecker/
Teaching Channel: youtube.com/channel/UCbfjtUg6PYRvwzB3FHU39jw