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OK. I updated the Meetings page. I left a placeholder there for this coming Sunday.

Works for me too. I can tell the others when we meet Sunday that we’re having a specialized talk that day and they don’t need to come if they don’t want to.

Right.

Sure. So this will be at 3 pm Vancouver time?

How about if I schedule this for Feb 5th? Usual time, etc.

Those times will usually work for me too.

All Sundays after 1 pm are clear for me.

$The notation (s) = { sx | x in R}.

And (r,s) = {rx + sy | x,y in R}. This is by definition. I don’t know if Eliot defines this yet.

So your example of (2,x) in Z[x] is: (2,x) = {2 f(x) + x g(x) | f,g in Z[x]}.
But looking at (2) + (x) this is {2 f(x) | f in Z[x]} + {x g(x) | g in Z[x]}, where we are adding the sets by adding all possible…[Read more]