There wasn't much but I'm working on resurrecting what there was. Maybe I'll get DNS fixed this weekend but for now: http://www.davidchudzicki.com.s3-website-us-east-1.amazonaws.com/
To add to the confusion, there are normally only two symbols for infinity to go around - ω and ∞
This post is the first I recall seeing ω used to refer to a cardinal. (The smallest infinite cardinal is usually called א₀.)
And I think hyperreals are probably a much less common topic than the other three, so at least we have different notation for the top three of these four notions (ω for the ordinal, א₀ for the cardinal, ∞ for the limit).
I'm not confident in this, but also: It looks to me like ω can be considered the same number in the ordinals, surre...
(I'm one of Jeff's housemates.) Going to the grocery would violate our rules even if you could stay 6ft away, because it's inside.
I guess there's one market in our area that's (a) outside, with (b) careful distancing. Going there would be fine I think, but I don't know if any of us have.