The equation shown is a type of decomposition of a Lie algebra g that was introduced by Élie Cartan in his doctoral thesis. h is called a Cartan subalgebra of g.

To answer what a Lie algebra is, an extremely hand-wavy description might be: a Lie group is a continuous group of symmetries of some geometric object (for example, the group SO(3) of rotations of three-dimensional space), and the corresponding Lie algebra is the “tangent space” to the group, that is, the space of tiny changes you can make that lie “along” the group.

A lot of things in Lie theory and differential geometry are named after Élie Cartan, or sometimes after his son Henri.

Isobritannia? Is that regular Britannia with the hydroxyl group attached in the middle instead of the end?

If the head needs to be empty, I find that droney Japanese noise is the best way to get that. Example: Aube - Flare

Lots of great sf/fantasy authors mentioned already, including some I’d argue for as great writers regardless of genre (Ursula K. Le Guin, Gene Wolfe, N. K. Jemisin).

I have three more to suggest in this genre and from this period:

• C. J. Cherryh (Cyteen, Foreigner series, lots more) uses the lens of alien societies – just different enough from ours – to make us look critically at the structure of our own;

• Sheri S. Tepper (Grass, Raising the Stones, The Gate to Women’s Country) carries one or another of the dark currents underlying our culture to its horrifying conclusion, and shows us what we get;

• Lois McMaster Bujold (Vorkosigan saga) gives us a hilarious and improbable hero who utterly transcends his disabilities, in the end perfectly embodying what it seems he could never hope to be.

Swans - Song for Dead Time

So bury your trust beneath the ground with me, dear

And lay your loneliness down for the sun to burn

To sand…

Various groups are running fan servers for Monster Hunter Frontier since it shut down in 2019. There is a translated client that mostly works. Search for “rain frontier server” for more info.

Disclaimer: I haven’t tried any of this myself and I don’t know whether the client they distribute will give your computer encephalitis.

Are you older? My parents moved near Traverse City to retire, since my family has done summer vacations up there for 70+ years. The year-round population in Leelanau and Grand Traverse counties now skews heavily older due to all the retirees, and also due to gentrification pricing a lot of families out.

This has mixed effects on health care in particular. On one side, a higher proportion of medical professionals work every day with the specific problems of an older population, and there are lots of relevant specialists. On the other side, availability of primary care can be difficult.

There’s always Super Hexagon!