I once saw a man with a notebook and pencil drawing these kinds of diagrams, at the time I saw them as graph theory. I wasn't in an extrovert moment and missed my chance to ask. He seemed to be working recreationally on them. I'm wondering about puzzles that could be easily created using these theories / maths. You, practitioners, any suggestions?
> I once saw a man with a notebook and pencil drawing these kinds of diagrams, at the time I saw them as graph theory.
I have been engaged in some work on s-arc transitive graphs in algebraic graph theory. You'd be surprised how rarely I have to draw an actual graph. Most of the time my work involves reasoning about group actions, automorphisms, arc-stabilisers, etc.
For anyone curious what this looks like in practice, I have some brief notes here: <https://susam.net/26c.html#algebraic-graph-theory>. They do not cover the specific results on s-arc-transitivity I have been working on but they give a flavour of the area. A large part of graph theory proceeds without ever needing to draw specific graphs.
Just added this to my Radar category. Along with ADSB, trains, boats, HeatMap, local weather stations, NOAA's solar weather, power outage trackers, quakes and fire. Anyone have any interesting things they track?
Big ups on that! Not to mention your local library's collection of DVDs. Or, their inter-library loan system for the ultra weird and rare.
One note on Kanopy - they use a ticket system (10-15 tickets per library customer). So if you have a couple people in your household, all of your library card numbers contribute tickets to the login. And, if you have two library systems like we do here (KCLS and SPL) you can double dip on all the cards again. No hack required - Kanopy actually has a very nice way of failing over to other cards as your quota is used up.
And if that's not enough, try Scarecrow Video out of Seattle. They are the masters of physical digital film media right now. It's fun to try to stump them. And they provide mailorder system similar to the old red envelopes of NetFlix.
eBay has DVD collections go up for sale all the time. Fun to buy the "box of movies" for $100 and see what you get.
Another big haul for me is from local thrift stores - usually 50 cents to 2 bucks a disc.
I've been working on mine on and off, tweaking and breaking it for years. I feed mine into a static HTML home page that's roughly based on the original index pages (e.g. Yahoo!)
My general categories are:
Libraries
Sounds
News
Health
Radar
Shopping
Movies
School
Tools
Money
Somehow, these seem to work for me. The automated side is fun to work on, but ultimately, I end up manually updating once in a while as changes are needed. I just added a page linked from the home page - Libraries - that leads to categorized "reading list" of articles, sites, things to follow / explore. That's where the real potential for automation is for me, and where I keep failing to deliver it just right.
I'm going to comb through Linkding for clews to my failure and my ultimate success.
As anyone who is a phan of the bryphyte knows, looking and watching these plants up close it's fascinating to see how they are really forests in miniature. From the tall trees of their sporophytes, to the low protonema that collect debris and spore.
Any other services down for anyone? I've had a credit service portal fail for hours today with a notice of server issues. As well as a credit union login with a similar message. These are all first times for me. Some big black cape / hat pressure testing?
We've got a free art exchange box on main street in town. Always fun to see what's in there. Never empty and always different. Maybe it's from reading Capitalism by Beckert, but libraries, art exchanges, fix it parties, and other GNP lowering activity really feels awesome.
We had a science teacher in 7th grade whose teaching style was all overhead notes. She'd give us time to copy them into our spiral bounds or 3-rings and when we were all done, she'd swap for the next slide.
She didn't lecture but she did tell stories about her farm, hunting, and occasionally some science. We could ask questions and tell stories if we finished copying the notes before everyone else was done. So, one of the takeaways from her class was getting very efficient and neat with my writing. I tried to write in a clean all caps and eventually learned which strokes were best for speed and spacing. I still use that hand-font and I always think of her sitting on the wall radiator laughing through some story of trying to fix a bad situation.
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