Michael Kinyon

I forgot that every noun can be verbed

If I'm being completely honest, I didn't even know "silo" could be a verb! 😁

Ah, I see. I've never heard "siloed" used that way.

What does "siloed topics", which is mentioned twice, mean?

I posted the letter in a 4 message thread on Ma(th)stodon. I could do it here, but because of the character limit, it would end up being about 20 posts.

mathstodon.xyz/@ProfKinyon/...

Journal news: 80% of the editorial board of Communications in Algebra has resigned. The resignation letter cites Taylor & Francis' dismissal of managing editor Scott Chapman and their recent top down approach to running journals. (E.g. implementing a 2 reviewer system without consulting the board.)

I am also a bit bothered by the main text's mention of "normal weakly flat cleavages".

The "just" in your notes is doing a lot of heavy lifting

*taking a short break, watching anime*

A: What are you watching?

Me: I'M GONNA BE KING OF THE PIRATES!!!

A: Ah

I remember the first time I heard a Czech using "Czechia" at a conference about six years ago. I was very baffled at the time, but I've gotten used to it since then. (I married into a Czech immigrant family.)

A line from the Final Exam Study Guide I prepared for my students:

* To keep myself busy while you take the exam, I will practice playing the bagpipe. I have never had a lesson, but I'm sure it will sound fine.

I just wish I could create this exam I'm writing using Autonomous Ultra Instinct instead of thinking.

In base 12, it's 10x16 = 160. Going back to base 10, it's 144+6*12 = 144 + 72 = 216.

"sin^2 φ is odious to me, even though Laplace made use of it; should it be feared that sin φ^2 might become ambiguous, which would... occur... at most very rarely when speaking of sin(φ^2), well then, let us write (sin φ)^2, but not sin^2 φ, which by analogy should signify sin(sin φ)" -- Gauss

Yes, Proposition XXXIII, another favorite.

I wish more theorems were stated as forcefully as this gem from Saccheri's Euclides ab omni naevo vindicatus (Euclid Freed of All Blemish), 1733:

"Proposition XIV: The hypothesis of the obtuse angle is absolutely false, because it destroys itself”

(Real answer: I don't know the history of it.)

Because "amn't I" is hard to say (unless you live in Ireland or Scotland, where apparently it is used).

Happy Adelaide Cup Day! (if that's the right holiday)

He states it more precisely than I did, making n>0 explicit.

Ganesan's Theorem: A commutative ring having only n nonzero zero divisors is necessarily finite and does not contain more than (n+1)^2 elements.

(Source: N. Ganesan, Properties of rings with a finite number of zero divisors, Math. Ann. 157 (1964), 215-218)

Oh, if only I were able to use the subjunctive mood correctly!

Leibniz algebras, Lie racks, and digroups The "coquecigrue" problem for Leibniz algebras is that of finding an appropriate generalization of Lie's third theorem, that is, of finding a generalization of the notion of group such that Leibniz al...

That's how I integrated Leibniz algebras to Lie racks about 22 years ago. (Good lord, where does the time go?)

arxiv.org/abs/math/040...

You're trapped in the last TV show you watched. Where are you?

We the people, in order to form a more perfect Union, will take the Complement of the Intersection of the Complements.

We hold these truths to be self-evident, that if a straight line falling on two straight lines makes the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which the angles are less than two right angles.

Lol, I knew this would happen. They are indeed very cool

I think it's the hyper-generalized one where the integral is over a chain homologous to zero. I haven't read Simon's stuff, but I vaguely recall other people calling it that.

Early 90s, I would say.

Nice!

When I was an undergrad, one of the physics professors had one that said "Hogwash!" He used it quite a bit.